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Lexgard Natural MB is a fully plant-based multifunctional ingredient system based on Lexgard Natural MB and Lexgard Natural MB, developed by Inolex to support an alternative protection approach in personal care and cosmetic formulations.
The INCI name of the product is Lexgard Natural MB (and) Lexgard Natural MB.
Lexgard Natural MB should not be considered as a single-function preservative in the classical sense.
The product can simultaneously act as a preservation component, emollient, co-emulsifier and skin refatting agent that limits microbial growth.
For this reason, it is especially used in "self-preserving", "alternative preservation", "hurdle technology" or cosmetic systems aimed at reducing the burden of traditional preservatives.
The basic working principle of Lexgard Natural MB is based on the combination of high purity C8 monoesters and undecylenic acid derivative.
Lexgard Natural MB is a monoester ingredient that has a biostatic effect especially on bacteria and yeast, as well as providing skin conditioning and emulsification support.
Lexgard Natural MB is the glycerol ester of undecylenic acid and is a lipophilic ester component that contributes to yeast and mold control.
Combined, these two structures help create a more unfavorable environment for microbial growth within the formulation.
The manufacturer describes Lexgard Natural MB as a system that is mainly effective against bacteria and yeast, with a certain level of effectiveness against mold.
For this reason, it should not be assumed that the product will be sufficient alone in every formulation as a "broad spectrum preservative".
It can be used in combination with stronger yeast/mold control components such as Caprylhydroxamic Acid in systems with high mold load, high water activity, or difficult to protect.
The recommended general use level for Lexgard Natural MB is approximately 1.0–1.5% of the total formulation weight.
The product can be used in the pH range of approximately 4.0–8.0.
In the instructions for use, the manufacturer recommends heating the product slightly to approx. 45–50 °C, stirring before use and adding to the water phase below 80 °C or around 40 °C during the cool-down phase.
This makes Lexgard Natural MB useful in both O/W and W/O emulsions.
The product can be used especially in emulsion or surfactant-based systems such as creams, lotions, facial cleansers, shower gels and shampoos.
Lexgard Natural MB is positioned as an alternative system that does not include many traditional preservative classes such as parabens, formaldehyde donors, MIT and phenoxyethanol.
The product is associated with 100% biobased content and is listed among the COSMOS approved natural cosmetics raw materials.
This is important for formulation concepts with natural cosmetics, clean beauty and low conventional preservatives.
However, being "natural" or "COSMOS approved" alone does not guarantee the microbiological safety of the final product.
Each formulation must be validated by separate challenge testing based on target packaging, water activity, pH, process hygiene, and consumer usage.
When purchasing Lexgard Natural MB, the phrase "natural preservative" should not be consulted alone.
INCI ID, exact trade name, manufacturer, pH working range, recommended use level, appearance, storage, solubility, COSMOS or other certification requirements and batch COA information should be checked together.
WHAT IS LEXGARD NATURAL MB?
Lexgard Natural MB is a fully plant-based multifunctional cosmetic ingredient system developed by Inolex.
The INCI name is Lexgard Natural MB (and) Lexgard Natural MB.
The product combines two main functional fatty acid monoester components. The first ingredient is Lexgard Natural MB.
Lexgard Natural MB is a monoester of glycerol and caprylic acid. Caprylic acid is a C8 chain saturated fatty acid.
Lexgard Natural MB can be used as an emollient, emulsifying agent, wetting agent, and preservation booster in cosmetic formulations. The second ingredient is Lexgard Natural MB.
Lexgard Natural MB is the ester of glycerol and undecylenic acid. Undecylenic acid is a C11 fatty acid with a terminal double bond.
Lexgard Natural MB is a lipophilic ester component that contributes to yeast and mold control.
Lexgard Natural MB is not a single pure molecule because it is a combination of these two ingredients.
For this reason, no single molecular formula or single molecular weight should be given for the product. For Lexgard Natural MB, CAS No 26402-26-6 is commonly used.
Lexgard Natural MB is used with CAS No 62285-15-8. The molecular formula of Lexgard Natural MB is C14H26O4.
Both components are glycerol esters. Since the two hydroxyl groups of glycerol can be released after esterification, the molecules carry both lipophilic hydrocarbon chain and hydrophilic hydroxyl functions.
This amphiphilic character makes it easier for them to behave on the emulsion interface.
The C8 chain of Lexgard Natural MB may contribute to interaction with bacterial membranes.
The longer and unsaturated C11 chain of Lexgard Natural MB may contribute to the surface-active behavior associated with fungal cells.
Therefore, the product is not just a mixture of emollients.
It is considered as a multifunctional ingredient system that changes the microbial ecology of the formulation.
Lexgard Natural MB is defined as a system produced entirely from plant-based sources. The manufacturer positions the product as a building block for self-preserving cosmetics.
In this approach, the preservation of a formulation is not left to a single strong preservative molecule.
Instead, multiple mild hurdles are used simultaneously.
These hurdles may include the following:
Low or controlled pH
Low water activity
Multifunctional glyceryl esters
Chelating agents
Caprylhydroxamic Acid
Packaging control
Good Manufacturing Practice
Low microbial raw materials
Suitable surfactant system
These combinations limit the growth of microorganisms from many different points.
Lexgard Natural MB can form the lipid-interface and biostatic component part of this system.
COMMON PRODUCT AND CHEMICAL NAMES
Lexgard Natural MB
Lexgard® Natural MB
INOLEX Lexgard Natural MB
Lexgard Natural MB (and) Lexgard Natural MB
Natural Preservation System
Plant-Based Preservation Component
Lexgard Natural MB / Lexgard Natural MB Blend
CAS 26402-26-6
CAS 62285-15-8
CAS NO, EC / EINECS NO AND CHEMICAL IDENTIFICATION
Product Name: Lexgard Natural MB
Manufacturer: Inolex, Inc.
INCI name: Lexgard Natural MB (and) Lexgard Natural MB
Product class: Multifunctional preservation ingredient system
Source: Plant-based
Biobased content: Positioned as 100%
Main ingredient 1: Lexgard Natural MB
Lexgard Natural MB CAS No: 26402-26-6
Lexgard Natural MB EC No: 247-668-1
Main ingredient 2: Lexgard Natural MB
Lexgard Natural MB CAS No: 62285-15-8
Lexgard Natural MB molecular formula: C14H26O4
Single molecular formula of the product: Not defined
Single molecular weight of the product: Not defined
Physical form: Mixture that can exhibit viscous or semi-solid behavior at liquid/low temperature
Color: Defined in SDS as white to yellow
Odor: Light
Water solubility: Insoluble
Flash point: >180 °C
Main function: Preservation support
Additional function: Bacteriostatic booster
Additional function: Mild fungistatic activity
Additional function: Emollient
Additional function: Co-emulsifier
Additional function: Skin refatting agent
Recommended use level: 1.0–1.5%
Operating pH range: pH 4.0–8.0
Recommended systems: O/W emulsions
Recommended systems: W/O emulsions
Recommended systems: Creams
Recommended systems: Lotions
Recommended systems: Facial cleansers
Recommended systems: Shower gels
Recommended systems: Shampoos
Manufacturer's approach to use: gentle heating to 45–50 °C, stirring and adding to the water phase at below 80 °C or approx. 40 °C during cool-down
CHEMICAL STRUCTURE AND MOLECULAR PROPERTIES OF LEXGARD NATURAL MB
The two key ingredients of Lexgard Natural MB are in the glycerol monoester family.
In the Lexgard Natural MB structure, the caprylic acid chain is attached to the glycerol backbone by an ester bond.
Caprylic acid is an eight-carbon saturated fatty acid.
Therefore, the Lexgard Natural MB molecule has a medium-chain lipophilic moiety.
The hydroxyl groups remaining in the glycerol section provide polar character.
This structure makes it easier to position the molecule on the oil-water interface.
Lexgard Natural MB has a similar glycerol ester structure but the fatty acid chain is longer and contains a terminal carbon-carbon double bond.
The overall molecular structure for Lexgard Natural MB can be described as C14H26O4.
The unsaturated bond in the undecylenic acid segment changes the packing and lipid-phase interaction behavior of the molecule.
This feature may be important for fungal membrane interactions.
The fact that both components contain lipophilic fatty chains provides the potential to interact with microorganism cell membranes.
At the same time, the presence of a hydroxyl-rich glycerol section prevents them from behaving as a completely hydrophobic oil.
This balance is advantageous in terms of distribution on the emulsion interface.
The bacteriostatic effect of Lexgard Natural MB may contribute to the deterioration of membrane integrity and cellular transport processes.
This effect is different from the classical strong biocide approach.
The goal is to limit the growth conditions of the microorganism rather than quickly kill it with a highly toxic molecule.
Lexgard Natural MB provides support on the fungal control side.
Undecylenic acid chemistry is known as fatty acid chemistry, which can suppress fungal growth.
The ester form improves the emulsion compatibility and multifunctionality of the product.
The strength of Lexgard Natural MB's protection approach is that the two ingredients are also formulation aids.
Lexgard Natural MB contributes to emulsification and wetting behavior.
Lexgard Natural MB can act as a co-emulsifier.
Both ingredients can have an emollient/refatting effect on the skin-feel.
Therefore, when adding for product protection function, formulation can also contribute to sensory profile.
The main properties of Lexgard Natural MB at the molecular level are:
Glycerol ester structure
C8 fatty acid segment
C11 unsaturated fatty acid segment
Amphiphilic character
Positioning on the oil-water interface
Contribution to bacteriostatic effect
Contribution to yeast control
Limited contribution to mold control
Emolliency
Co-emulsification
Skin refatting
Wetting support
Compatibility with Hurdle Technology
PHYSICAL AND CHEMICAL PROPERTIES OF LEXGARD NATURAL MB
Lexgard Natural MB is in liquid or viscous mixture form that can be dosed commercially into cosmetic formulations.
General physical information is given in the current SDS as follows:
Product Type: Blend
Trade name: Lexgard Natural MB
INCI: Lexgard Natural MB (and) Lexgard Natural MB
Physical state: Liquid
Color: White/Yellow
Odor: Mild odor
Water solubility: Insoluble
Flash point: >180 °C
Chemical stability under normal use conditions: Stable
GHS US classification: Not classified
Recommended use level: 1.0–1.5%
Operating pH range: 4.0–8.0
These physical properties should be evaluated together with the COA for the exact lot.
The water-insoluble character of Lexgard Natural MB affects the formulation method.
If the product is added quickly directly to cold water, completely clear dissolution should not be expected.
In emulsion systems, it can be more easily dispersed during the oil-water interface or emulsification process.
In clear surfactant systems, a solubilization system may be required.
Inolex recommends the use of the appropriate solubilizer for clear formulations and gives the example of its own LexSolv Essential system.
The physical appearance of the product may vary with temperature.
Fatty ester structures may show viscosity increase or partial crystallization at low temperature.
For this reason, the manufacturer recommends gentle heating to about 45–50 °C before use.
This process can make the product more homogeneous and easy to dose.
It is not necessary to keep it at extremely high temperature for a long time.
In the formulation process design, product addition temperature, water phase composition and surfactant package should be evaluated together.
HOW DOES LEXGARD NATURAL MB WORK AT THE MOLECULAR LEVEL?
The protective effect of Lexgard Natural MB differs from conventional single-molecule preservative systems.
The product restricts microorganism growth through a combination of several physicochemical mechanisms.
The first mechanism is the interaction of fatty acid esters with the microbial membrane.
Bacterial and yeast cell membranes are made up of lipid structures.
Amphiphilic molecules, such as Lexgard Natural MB, can interact with these membranes.
Membrane organization and permeability can vary.
Intracellular ion and metabolite balance may be disrupted.
The growth rate may decrease.
The second mechanism is interface control.
Cosmetic emulsions contain different oil-water microenvironments.
Microorganisms can be found not only in the bulk water phase, but also on the interfaces.
Glyceryl esters can become lodged at the interface, contributing to limiting the formation of suitable microenvironments for microbial growth.
The third mechanism is fungal control.
Undecylenic acid derivatives may exhibit inhibiting behavior on yeast and mold.
Lexgard Natural MB provides this function in the form of a formulation-compatible ester.
However, the manufacturer does not describe the mold control of Lexgard Natural MB as as strong as bacterial and yeast control.
For this reason, additional hurdles are required in systems with high mold challenge difficulty.
The fourth mechanism of formulation is the relationship with pH.
Lexgard Natural MB can be used in the pH range of 4–8.
This wide range is a significant advantage over many organic acid-based preservative systems.
However, formulation pH is still a significant influence on microorganism growth rate and other hurdles.
For many skin-care formulations around pH 5-6, a balanced system can be established in terms of both dermatological compatibility and microbial control.
The fifth mechanism is the hurdle synergy.
Lexgard Natural MB can create a stronger preservation system with the following components:
Caprylhydroxamic Acid
Chelating agents
Low pH
Low water activity
Multifunctional glycols
Controlled packaging
Airless systems
Low-bioburden production
Good Manufacturing Practice
The purpose of these combinations is to apply multiple stresses to the microorganism at the same time.
For this reason, even if the product is considered as a "traditional preservative replacement", it should not be considered safe without a final formulation challenge test.
The main functions of Lexgard Natural MB at the formulation level are:
Limiting bacterial growth
Limiting Yeast growth
Partially limiting mold growth
Helping to reduce the burden of traditional preservatives
Supporting self-preserving formulation development
Ensuring emolliency
Provide co-emulsification
Provide skin refatting
Improving interface wetting
Contributing to Hurdle Technology systems
IN WHICH SECTORS IS LEXGARD NATURAL MB USED?
The main area of use of Lexgard Natural MB is in the cosmetics and personal care industry.
Major applications:
Skin care creams
Face creams
Body creams
Lotions
Body lotions
Hand creams
O/W emulsions
W/O emulsions
Facial cleansers
Cream cleansers
Shower gels
Body washes
Shampoos
Conditioning shampoos
Scalp care products
Natural cosmetics
Clean beauty formulations
Self-preserving cosmetics
Alternative preservation systems
Sensitive-skin formulations
Plant-based personal care
Waterless or low-water formulations
Solid moisturizers
Emulsion serums
Mild cleansing systems
Leave-on skin care
Rinse-off personal care
The product provides the advantage of strong formulation compatibility, especially in emulsion systems.
This is due to both the protection support and the emollient/co-emulsifier function.
It can also be used in surfactant-based products, but if clear appearance is targeted, solubilization control should be done.
In clear products such as shampoos and facial cleansers, fatty ester additives can create haze or cloudiness.
Therefore, the surfactant system and solubilizer should be selected correctly.
USE OF LEXGARD NATURAL MB IN SKIN CARE AND EMULSION APPLICATIONS
Creams and lotions are among the most typical uses for Lexgard Natural MB.
In the O/W emulsion system, the oil phase is dispersed in the water phase.
Microbial protection is critical in these systems due to high water activity.
Lexgard Natural MB can be used at approximately 1.0–1.5%.
Glyceryl esters can be positioned on the interface.
This contributes to both microbial control and emulsion texture.
Lexgard Natural MB can support primary emulsifier system as co-emulsifier.
As a result, the cream structure and sensory feel may change.
Although this effect is a formulation advantage, a stability test should be performed as it may cause a change in viscosity.
The product can also be used in W/O emulsions.
In these systems, water droplets are dispersed in oil continuous phase.
The preservation challenge may be different because the microorganism is in the dispersed phase of the accessible water region.
Lexgard Natural MB can also be useful on these systems due to its interface-active nature.
The emollient/refatting function can improve skin feel in leave-on skincare products.
The manufacturer identifies the product as a skin refatting agent.
This property may be useful for mild formulations targeted to reduce lipid loss after cleansing.
The product is particularly valuable when one wants to reduce traditional preservatives in natural/certified cosmetics systems.
However, as the load of emulsifiers, fatty alcohol, natural oil and botanical extract increases, the microbial risk may also change.
Botanical extracts can carry high initial bioburden.
For this reason, challenge testing is especially important in natural formulation.
USE OF LEXGARD NATURAL MB IN SHAMPOO, CLEANSER AND SURFACTANT SYSTEMS
Also suitable for Lexgard Natural MB surfactant-based systems.
Shower gels
Facial cleansers
Shampoos
Body washes
Liquid cleansers
It can be used in products such as.
Preservative efficacy in surfactant systems may differ from emulsion systems.
Anionic, amphoteric, and nonionic surfactants can replace preservative partitioning.
Lexgard Natural MB with fatty ester structure may be distributed in the micellar phase.
This may have an effect on the microbial-active fraction.
For this reason, it should not be assumed that the 1% level that works in a cream formulation will work in a shampoo in the same way.
If there is a clear product target, optical clarity should be checked separately.
Since Lexgard Natural MB is water-insoluble, it may produce insufficient solubilization haze.
The manufacturer recommends the use of appropriate solubilizer for clear formulations.
Addition temperature is also important in surfactant-based formulation.
The product can be made homogeneous by heating it slightly.
It can then be added in a controlled manner in the water phase or cool-down stage.
Mixing speed should be adjusted to prevent excessive foam formation.
The final product should be evaluated with the following parameters:
Appearance
Clarity
Viscosity
pH
Odor
Foam
Skin feel
Microbial challenge test
Accelerated stability
IS LEXGARD NATURAL MB USED IN FOOD, COSMETIC AND PHARMACEUTICAL APPLICATIONS?
Lexgard Natural MB is a commercial ingredient system developed for cosmetics and personal care.
It is not directly positioned as a food additive.
It is not positioned as a pharmaceutical active ingredient.
It is a cosmetic formulation raw material.
The INCI ID is Lexgard Natural MB (and) Lexgard Natural MB.
The product is included in the COSMOS approved raw material lists.
This provides an advantage in terms of natural/organic cosmetics formulations.
However, just because it's a COSMOS approved raw material doesn't mean the final product will automatically be COSMOS certified.
All raw materials and the production process in the final formulation must comply with the certification requirements.
If food-contact or pharmaceutical application is targeted, Lexgard Natural MB's cosmetic product bulletin is not a sufficient regulatory basis.
A special regulatory statement must be obtained from the manufacturer for exact target use.
The fact that Lexgard Natural MB or Lexgard Natural MB can be used in other sectors does not automatically mean that the Lexgard Natural MB trade product is suitable for the same industries.
INDUSTRIAL APPLICATIONS OF LEXGARD NATURAL MB
Lexgard Natural MB is mainly used in the industry as a personal care formulation ingredient.
Major functions:
Alternative preservation
Self-preserving formulation development
Hurdle Technology systems
Natural cosmetic preservation
Clean beauty formulation
Bacteriostatic boosting
Yeast control support
Mold control support
Emolliency
Co-emulsification
Skin refatting
Surfactant system support
O/W emulsion formulation
W/O emulsion formulation
Cream manufacturing
Lotion manufacturing
Shampoo manufacturing
Cleanser manufacturing
Shower gel manufacturing
Solid cosmetic formulation
Pilot batch development
Preservative optimization
Challenge-test driven formulation development
Process conditions are important when using Lexgard Natural MB.
The product can be slightly heated to around 45–50 °C.
Mixing is done.
It can be added to the water phase below 80 °C.
Alternatively, around 40 °C can be added during cool-down.
The final pH can be kept in the range of 4–8.
The exact addition point should be optimized according to the application system.
In industrial systems, the following parameters should be evaluated:
Exact trade name
PEARL
Use level
Final pH
Water activity
Emulsion type
Surfactant system
Oil phase loading
Botanical extract loading
Solubilization
Addition temperature
Mixing speed
Appearance
Odor
Viscosity
Emulsion stability
Freeze-thaw stability
Centrifuge stability
Microbial challenge test
Packaging compatibility
TDS
SDS
COA
COSMOS documentation if required
WHAT PROBLEMS CAN LEXGARD NATURAL MB HELP SOLVE?
Reducing the use of traditional preservatives
Lexgard Natural MB can help reduce the burden of traditional preservatives by creating a bacteriostatic and fungistatic hurdle in the formulation.
Develop Phenoxyethanol-free system
The product can be used as a building block of phenoxyethanol-free preservation strategy.
Developing a paraben-free formulation
The product does not contain parabens and can be evaluated in the alternative preservation system.
Developing a system that does not use formaldehyde donors
Lexgard Natural MB formaldehyde does not contain donors.
Developing MIT-free formulation
The product can help to develop MIT-free system.
Bacterial challenge problems
Lexgard Natural MB contributes to bacterial growth control.
Yeast challenge problem
The product can support obvious control over the yeast.
Mold challenge problem
Lexgard Natural MB shows a certain level of mold efficacy but may not be sufficient on its own.
In this case, a stronger yeast/mold control component can be added.
Combining preservative and emollient function in cream formulation
Lexgard Natural MB can be an emollient, co-emulsifier and preservation component at the same time.
Improving skin feel after cleansing system
With refatting function, it can provide smoother post-wash feeling.
Developing Natural/COSMOS formulation
COSMOS approved status can make the product easier to use in natural cosmetic systems.
Haze formation in clear cleanser
In this case, adding more Lexgard Natural MB is not the right solution.
The solubilization system, surfactant blend and addition method should be re-evaluated.
Challenge test failure
Simply increasing the level of usage is not always the right solution.
pH, packaging, water activity, GMP, chelator and broad-spectrum partner should be evaluated together.
THINGS TO CONSIDER WHEN USING LEXGARD NATURAL MB
Exact product name must be verified.
INCI must be verified.
The combination of Lexgard Natural MB and Lexgard Natural MB should be verified.
The recommended usage interval of 1.0–1.5% should be used as a starting point.
The pH range of 4–8 should be maintained.
It should be noted that mold control of the product may be limited.
Broad-spectrum efficacy should not be assumed.
Challenge testing should be done.
Water activity should be evaluated.
Raw material bioburden should be checked.
Botanical extracts should be carefully evaluated.
The risk of packaging contamination should be examined.
Airless packaging can be considered when necessary.
The product may be slightly warmed before use.
Homogenization can be applied around 45–50 °C.
Water should be added to the phase below 80 °C.
Cool-down addition can be done at around 40 °C.
Solubilization should be checked for clear formulations.
Viscosity change should be followed.
Emulsion stability should be tested.
Odor should be checked.
TDS should be examined.
SDS should be examined.
The COA must be verified.
If COSMOS or natural certification is required, the current certificate should be checked.
INITIAL FORMULATION APPROACHES FOR LEXGARD NATURAL MB
The following examples are laboratory starter formulations to show how Lexgard Natural MB can be used in different personal care systems.
These are not verified commercial prescriptions or final preventive system recommendations.
All percentages are the percentage by weight of the final mixture.
Each sample adds up to 100%.
The final microbial safety challenge must be verified by testing.
EXAMPLE 1: LEXGARD NATURAL MB O/W FACE CREAM
Purpose: To evaluate the effect of Lexgard Natural MB on preservation support, co-emulsification and skin feel in O/W emulsion.
Starting components:
Deionized water: 73.5%
Glycerin: 4.0%
O/W emulsifier system: 5.0%
Caprylic/Capric Triglyceride or suitable emollient: 8.0%
Vegetable oil: 4.0%
Fatty alcohol / consistency agent: 2.5%
Lexgard Natural MB: 1.2%
Skin-care actives: 1.0%
pH regulator: 0.3%
Perfume: 0.5%
Total: 100%
Application approach:
The water phase is prepared.
The oil phase is prepared separately.
Emulsification is carried out at the appropriate temperature.
Lexgard Natural MB is homogenized at approximately 45–50 °C before use.
The product is added to the water phase at the appropriate temperature or at about 40 °C during cool-down.
A final pH of around 5.0–5.5 can be considered as an initial target.
Viscosity is measured.
Centrifuge and freeze-thaw stability are evaluated.
Appearance and skin feel are checked.
Challenge test is applied.
If necessary, Lexgard Natural MB is compared at 1.0% / 1.2% / 1.5%.
EXAMPLE 2: LEXGARD NATURAL MB MILD FACIAL CLEANSER
Purpose: To evaluate the effect of Lexgard Natural MB on preservation support and clarity in surfactant-based cleanser.
Starting components:
Deionized water: 70.0%
Mild anionic surfactant: 10.0%
Amphoteric surfactant: 10.0%
Nonionic surfactant: 4.0%
Humectant: 3.0%
Lexgard Natural MB: 1.2%
Solubilizer: 1.0%
Fragrance: 0.3%
pH regulator: 0.5%
Total: 100%
Application approach:
Surfactants are added to water with mixing which will create low foam.
Lexgard Natural MB is homogenized at approx. 45–50 °C.
Premix can be made with a solubilizer.
The mixture is added to the main batch in a controlled manner.
The final pH can be set as an initial target of approximately 5.0–5.5.
Clarity is evaluated.
If haze occurs, solubilizer and surfactant balance are optimized.
Foam is tested.
Viscosity is measured.
Accelerated stability is done.
Challenge test is applied.
EXAMPLE 3: LEXGARD NATURAL MB NATURAL BODY LOTION
Objective: To evaluate the use of Lexgard Natural MB in the Natural/COSMOS-oriented lotion concept.
Starting components:
Deionized water: 77.0%
Glycerin: 3.0%
Natural O/W emulsifier: 5.0%
Plant-based emollient: 7.0%
Natural oil: 4.0%
Fatty alcohol: 1.5%
Lexgard Natural MB: 1.5%
Botanical extract: 0.5%
pH regulator: 0.3%
Natural fragrance: 0.2%
Total: 100%
Application approach:
Raw material bioburden is especially verified for botanical extract.
The water and oil phases are properly prepared.
Emulsification is applied.
Lexgard Natural MB can be added in a cool-down zone of approximately 40 °C.
The final pH is verified within the target range.
After 24 hours, pH and viscosity are measured again.
Stability test is applied.
Packaging compatibility is evaluated.
Microbial efficacy is verified with ISO 11930 or challenge test method suitable for the target market.
ALTERNATIVES AND COMPARISON OF LEXGARD NATURAL MB
When choosing a Lexgard Natural MB alternative, the definition of "natural preservative" should not be looked at alone.
Bacterial efficacy, yeast/mold efficacy, pH window, solubility, emulsion compatibility, sensory impact, certification and usage level should be evaluated together.
LEXGARD NATURAL MB AND LEXGARD GMCY MB
The INCI name of Lexgard GMCY MB is Lexgard Natural MB.
This product is considered to be the only major monoester system.
Lexgard Natural MB is a combination of Lexgard Natural MB and Lexgard Natural MB.
For this reason, Lexgard Natural MB can provide a wider hurdle in terms of fungal control.
The Lexgard GMCY MB preservation booster can be used for emollient and emulsification support.
A usage range of approximately 1–1.5% can be seen for both products.
However, due to the presence of Lexgard Natural MB, Lexgard Natural MB aims for stronger yeast/mold contribution.
LEXGARD NATURAL MB AND LEXGARD O NATURAL MB
The INCI name of Lexgard O Natural MB is Caprylyl Glycol.
Caprylyl Glycol is used as a humectant and multifunctional preservation component.
Lexgard O Natural MB can be used at levels of approximately 0.5–1.5% for different formulation types.
Lexgard Natural MB is based on glyceryl ester.
Lexgard Natural MB provides more pronounced lipid-interface function in terms of co-emulsification and skin refatting.
Lexgard O Natural MB can show different solubility and sensory profile through glycol chemistry.
The two products should not be substituted on a one-to-one gram basis.
LEXGARD NATURAL MB AND SPECTRASTAT G2 NATURAL MB
The INCI system of Spectrastat G2 Natural MB is based on a combination of Caprylhydroxamic Acid, Lexgard Natural MB and Glycerin.
Caprylhydroxamic Acid can provide strong yeast/mold control contribution.
For this reason, Spectrastat G2 Natural MB may be a more powerful complete-system option than Lexgard Natural MB for broad-spectrum preservation.
Lexgard Natural MB, on the other hand, stands out as a simpler glyceryl ester system with its emollient and co-emulsifier function.
The manufacturer recommends that Lexgard Natural MB be supplemented with systems containing Caprylhydroxamic Acid when broad-spectrum protection is required.
Therefore, the two products represent different preservation strength levels rather than alternatives in some formulations.
LEXGARD NATURAL MB AND GEOGARD ECT
Geogard ECT is a broad-spectrum preservative system based on benzyl alcohol, salicylic acid, glycerin and sorbic acid.
Lexgard Natural MB is a glyceryl ester based alternative preservation ingredient.
Geogard ECT is closer to the classic preservative blend approach.
Lexgard Natural MB is more suitable for the hurdle technology and multifunctional ingredient approach.
The odor, acid chemistry and benzyl alcohol content of Geogard ECT may have different effects on the formulation.
Lexgard Natural MB may be more suitable in phenoxyethanol-free and traditional-preservative-free concept development.
However, the mold protection of Lexgard Natural MB may not be as strong as a broad-spectrum system like Geogard ECT.
QUALITY CONTROL AND PURCHASING CRITERIA FOR LEXGARD NATURAL MB
The exact trade product must be verified when purchasing Lexgard Natural MB.
Recommended information to review before purchasing:
Full product name
Manufacturer
INOLEX origin
PEARL
Lexgard Natural MB identity
Lexgard Natural MB identity
Appearance
Color
Odor
Physical state
Water solubility
Flash point
Use level
pH operating range
Plant-based statement
Biobased content
COSMOS approval
Natural certification statements
Country of origin
Manufacturing location
Batch number
Production date
Shelf life
Storage conditions
Packaging
Microbiological quality
If heavy metals are required
If residual solvents are required
If Acid value is required
If monoester content is required
TDS
SDS
COA
COSMOS documentation
If vegan statement is required
Relevant certificate if Halal/Kosher required
Current regulatory statement if China IECIC status is required
During supplier-change validation, products should not be assumed to be equivalent just because the INCI is the same.
Lexgard Natural MB/Lexgard Natural MB ratio, purity, manufacturing process and sensory profile may vary.
These parameters may have an impact on preservation efficacy and emulsion behavior.
It is useful to apply reference formulation and challenge testing for the new supplier or lot.
STORAGE AND HANDLING OF LEXGARD NATURAL MB
Lexgard Natural MB should be stored closed, clean, and in appropriate packaging.
The manufacturer's current TDS and SDS storage conditions should be taken as basis.
Extreme temperature variations should be avoided.
At low temperature, the viscosity or physical appearance of the product may change.
Gentle heating to about 45–50 °C before use can help the product become homogeneous.
Direct contamination should be avoided.
Water ingress into the packaging should be prevented.
The transfer equipment used must be clean.
The risk of microbial contamination should be kept low.
FIFO system can be applied.
Lot traceability must be ensured.
Transport and dangerous goods classification must be verified on the exact current SDS.
In the current SDS, the product is not classified as hazardous under GHS US.
However, industrial hygiene rules should be applied.
LEXGARD NATURAL MB SAFETY INFORMATION
Lexgard Natural MB is a mixture used as a cosmetic ingredient.
In the current Inolex SDS, it is stated as "Not classified" under GHS US classification.
This does not mean that no work measures are required.
Proper eye protection should be used when working with industrial quantities of raw materials.
Prolonged skin contact should be avoided.
Spills can create a slippery surface.
The transfer area must be kept clean.
Excessive temperature should not be reached during heating.
The product is chemically stable under normal conditions of use, storage and transportation.
Safe use should be based on the current SDS that come with the exact lot for fire, spillage and PPE.
WHAT TO CONSIDER WHEN BUYING LEXGARD NATURAL MB?
First, the formulation goal should be determined.
Natural cosmetic?
Is it COSMOS-oriented?
Is Phenoxyethanol-free?
Is it paraben-free?
Self-preservation?
O/W cream?
W/O cream?
Clear cleanser?
Shampoo?
This information determines the appropriate use of the product.
The following information should be clarified before purchasing:
Exact trade name
INOLEX manufacturer requirement
INCI requirement
Minimum order quantity
Packaging
Use level target
pH range
COSMOS requirement
100% biobased requirement
Vegan requirement
Country of origin
Current shelf life
TDS
SDS
COA
Regulatory dossier
Supplier technical support if challenge-test support data is required
The price of Lexgard Natural MB should not be evaluated only on the kilogram cost.
Since the product can act as a preservative support, emollient, co-emulsifier and refatting agent at the same time, it may have the potential to reduce the use of other raw materials.
However, if the challenge test fails, a stronger preservation partner may need to be added.
In this case, the actual preservative-system cost must be calculated over the whole formulation.
LEXGARD NATURAL MB SUPPLY FROM ATAMAN KIMYA
Lexgard Natural MB; It is a 100% plant-based multifunctional preservation ingredient system based on Lexgard Natural MB and Lexgard Natural MB, developed for personal care formulations.
Companies that want to get information about the supply of Lexgard Natural MB from Ataman Kimya can request product suitability, current supply conditions, packaging and price information by sharing the formulation type, target pH, usage level and certification requirements.
The current stock status, manufacturer, origin, exact INCI, packaging, shelf life, COSMOS status and technical specifications of the product should be confirmed before ordering.
Sharing the following information in the request for quotation makes it easier to evaluate the right product:
Use sector
Final product type
O/W or W/O emulsion
Surfactant-based system information
Target pH
Target usage level
Natural/COSMOS requirement
Phenoxyethanol-free requirement
Existing preservative system
If there is a challenge-test problem, the type of microorganism
Estimated order quantity
Packaging preference
The need for TDS
The need for SDS
The need for COA
Need for regulatory documentation
FREQUENTLY ASKED QUESTIONS ABOUT LEXGARD NATURAL MB
What is Lexgard Natural MB?
It is a completely plant-based multifunctional preservation ingredient system based on Lexgard Natural MB and Lexgard Natural MB.
Who is the manufacturer?
Inolex, Inc.
What is the name INCI?
Lexgard Natural MB (and) Lexgard Natural MB.
Is Lexgard Natural MB a preservative?
It is a multifunctional ingredient system that provides preservation effects. It should not be assumed that it is a complete broad-spectrum preservative alone in each formulation.
What microorganisms is it effective against?
Strong control support on bacteria and yeast provides a certain level of efficacy on the mold.
Is it enough for mold alone?
Not in every formulation. Difficult systems may require a stronger yeast/mold control agent.
How much is Lexgard Natural MB used?
Usually 1.0–1.5%.
What pH range does it work in?
Approx. pH 4.0–8.0.
Is O/W used in emulsion?
Yes.
Is W/O used in emulsion?
Yes.
Is it used in cream?
Yes, it is one of the important areas of use.
Is it used in Lotion?
Yes.
Is it used in shower gel?
Yes.
Can it be used in clear product?
It can be used, but due to its water-insoluble character, proper solubilization may be required.
Is water soluble?
According to SDS, it is insoluble in water.
What is its physical form?
It is defined as liquid in SDS.
What is its color?
It is indicated as white-yellow in the SDS.
What is Flash point?
It is specified as >180 °C in SDS.
How to add?
Prior to use, it is slightly heated to approx. 45–50 °C and stirred. It can be added to the water phase at below 80 °C or at approx. 40 °C during the cool-down phase.
Is Lexgard Natural MB natural?
The manufacturer positions the product as 100% plant-based and 100% biobased content.
Is COSMOS approved?
It is included in the COSMOS approved raw material lists.
Does it contain Phenoxyethanol?
The manufacturer states that the product does not contain phenoxyethanol.
Does it contain parabens?
It is positioned as a paraben-free system.
Does it contain MIT?
It does not contain MIT.
Does formaldehyde contain donors?
Formaldehyde does not contain donors.
Is it emollient?
Yes, emollient also provides function.
What is Lexgard Natural MB?
It is a monoester multifunctional cosmetic ingredient consisting of glycerol and caprylic acid.
What is Lexgard Natural MB?
It is an ester of glycerol and undecylenic acid and provides fungal control contribution.
Does Lexgard Natural MB have a single CAS number?
The product is a mixture consisting of two main INCI components. CAS 26402-26-6 is used for Lexgard Natural MB, CAS 62285-15-8 is used for Lexgard Natural MB.
Is there a single molecular weight?
The commercial product is a mixture.
Is Lexgard the same as GMCY MB?
Lexgard GMCY MB mainly contains Lexgard Natural MB, while Lexgard Natural MB is a combination of Lexgard Natural MB and Lexgard Natural MB.
Is Lexgard O Natural the same as MB?
Lexgard O Natural MB Caprylyl is based on Glycol.
Is Spectrastat G2 the same as Natural MB?
Spectrastat G2 Natural MB is a larger preservation system containing Caprylhydroxamic Acid.
Is a challenge test necessary?
The final formulation should be confirmed by the microbial challenge test.
Is it used in food application?
It is positioned as a cosmetic/personal care ingredient; it should not be considered as a food additive.
Is it suitable for pharmaceutical use?
Pharmaceutical grade should not be automatically accepted.
What documents should be requested?
TDS, SDS, COA, and COSMOS/regulatory documentation if required.
LEXGARD NATURAL MB – TECHNICAL SUMMARY
Lexgard Natural MB is a 100% plant-based multifunctional preservation ingredient system with Lexgard Natural MB (and) Lexgard Natural MB INCI developed by Inolex for personal care and cosmetic formulations.
The product provides bacteriostatic boosting, yeast control, and limited mold control, while also offering emollient, co-emulsifier, and skin refatting agent functions.
Its main uses are O/W and W/O creams, lotions, facial cleansers, shower gels, shampoos and alternative/self-preserving cosmetic systems.
The recommended general use level is 1.0–1.5%.
The product can be used in the pH range of 4.0–8.0.
Inolex recommends gentle heating to about 45–50 °C before use, stirring, and adding to the water phase at below 80 °C or about 40 °C during cool-down.
Lexgard Natural MB is water-insoluble; appropriate solubilization may be required for clear formulations.
While the product offers strong support in terms of bacteria and yeast control, mold control is more limited.
For this reason, it can be used in combination with strong yeast/mold control agents such as Caprylhydroxamic Acid in hard-to-protect formulations.
Lexgard Natural MB can be evaluated in formulation concepts that do not contain parabens, formaldehyde donors, MIT and phenoxyethanol.
As a COSMOS approved raw material, it provides an advantage in terms of natural/organic cosmetic development.
Because the product is made up of two main ingredients, it should not be identified by a single CAS number, single molecular formula, or single molecular weight.
CAS 26402-26-6 for Lexgard Natural MB and CAS 62285-15-8 for Lexgard Natural MB can be used.
exact trade name, INCI, manufacturer, recommended use level, pH range, physical properties, COSMOS documentation, TDS, SDS and COA must be verified together when purchasing Lexgard Natural MB.
The final formulation should not be considered microbiologically safe based solely on the ingredient datasheet, but should be validated by the appropriate challenge test.
Companies planning to procure Lexgard Natural MB from Ataman Kimya are recommended to confirm the current product and offer conditions by sharing their product type, target pH, current preservative strategy, natural-certification needs, estimated order quantity and technical document expectations.
