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Sodium Laureth Sulfosuccinate is generally used as a name for a sulfosuccinate-type anionic surfactant, although the established cosmetic INCI name for the commonly marketed ingredient is Sodium Laureth Sulfosuccinate.
Sodium Laureth Sulfosuccinate the material consists of an ethoxylated lauryl alcohol moiety linked to a sulfosuccinate group and is supplied commercially in several grades with different average ethoxylation levels and active concentrations.
Sodium Laureth Sulfosuccinate because commercial documentation and cosmetic databases predominantly identify this ingredient as Sodium Laureth Sulfosuccinate, that name is used for the chemical description below.
CAS Number: 9354-45-5
Molecular Formula: (C2H4O)nC16H30O7S.2Na
Molecular Weight 410.43
Synonyms: 0A13NT4QUI, Disodium 1-(laureth-2) sulfosuccinate, Ethanol, 2-(2-(dodecyloxy)ethoxy)-,, sulfosuccinate, disodium salt, Butanedioic acid, 2-sulfo-, 1-(2-(2-(dodecyloxy)ethoxy)ethyl) ester, sodium salt (1:2), 3486-90-6, RefChem:1083834, UNII-0A13NT4QUI, Q27236517, LAURETH SULFOSUCCINATE DISODIUM SALT;LAURYL ETHER SULFOSUCCINATE DISODIUM SALT;DODECYL ETHER SULFOSUCCINATE DISODIUM SALT;SULPHOSUCCINICACID4-ESTERWITHPOLYETHYLENEGLYCOLDODEC.;Dodecyl sulfosuccinate, disodium salt;Poly(oxy-1,2-ethanediyl), .alpha.-(3-carboxy-1-oxo-3-sulfopropyl)-.omega.-(dodecyloxy)-, disodium salt;Butanedioic acid, sulfo-, laureth-12 ester, disodium salt;Butanedioic acid, sulfo-, laureth-6 ester, disodium salt
Sodium Laureth Sulfosuccinate is an anionic surfactant containing a hydrophobic lauryl chain and a hydrophilic, negatively charged sulfosuccinate portion.
Sodium Laureth Sulfosuccinate structure also contains ethoxy units derived from the ethoxylation of lauryl alcohol, giving the molecule both water-compatible and oil-compatible characteristics that are useful in cleansing formulations.
The combination of these structural features allows the surfactant to reduce surface tension and help disperse oils, sebum, dirt, and other substances in water.
Unlike Sodium Laureth Sulfosuccinate, Sodium Laureth Sulfosuccinate is not a sulfate surfactant even though the names can appear similar.
Sodium Laureth Sulfosuccinate belongs to the sulfosuccinate family, in which the hydrophilic functional group is based on a sulfonated succinate structure rather than a sulfate ester.
This chemical distinction is important because sulfosuccinates and sulfate surfactants have different molecular structures and should not be treated as interchangeable substances.
Sodium Laureth Sulfosuccinate ingredient is commonly supplied as a clear, colorless to slightly yellow aqueous surfactant solution rather than as a pure dry solid.
Commercial products may contain approximately 30–40% active Sodium Laureth Sulfosuccinate, with water and formulation auxiliaries making up the remainder.
The exact appearance, active content, viscosity, pH, and ethoxylation level depend on the particular commercial grade.
Several CAS numbers are associated with Sodium Laureth Sulfosuccinate because the commercial ingredient can represent a group of related ethoxylated materials rather than one single molecular species with a fixed chain length.
Sodium Laureth Sulfosuccinate CAS 39354-45-5 is commonly used for the generic ingredient, while other numbers such as 40754-59-4 and 58450-52-5 appear in supplier and regulatory records for specific or broader material definitions.
The Cosmetic Ingredient Review specifically notes that the CAS number 39354-45-5 is generic for Sodium Laureth Sulfosuccinate materials.
The molecular architecture of Sodium Laureth Sulfosuccinate gives it strong water solubility and useful surface-active behavior.
The hydrophobic lauryl portion associates with oils and other nonpolar substances, while the charged sulfosuccinate portion remains strongly hydrated in the aqueous phase.
Sodium Laureth Sulfosuccinate amphiphilic behavior allows the ingredient to form micelles and other surfactant aggregates that help remove oily contaminants during washing.
Sodium Laureth Sulfosuccinate is particularly valued for its cleansing and foaming performance in personal-care formulations.
Sodium Laureth Sulfosuccinate can generate foam while helping to remove sebum, dirt, cosmetic residues, and other contaminants from the skin and hair.
For this reason, it is commonly incorporated into shampoos, facial cleansers, body washes, liquid soaps, and other rinse-off products.
The ingredient is also used as a foam booster, hydrotrope, and supporting surfactant rather than necessarily functioning as the sole cleansing agent in a formulation.
Sodium Laureth Sulfosuccinate hydrotropic properties can help improve the clarity and physical stability of certain surfactant systems, while its compatibility with other anionic and nonionic surfactants allows formulators to build more complex cleansing systems.
This makes Sodium Laureth Sulfosuccinate useful in both sulfate-containing and sulfate-free formulations.
The relatively large and highly polar structure of Sodium Laureth Sulfosuccinate is also relevant to its behavior on the skin.
The Cosmetic Ingredient Review reported that dermal penetration would be unlikely because of the substantial polarity and molecular size of these alkyl PEG sulfosuccinates.
Nevertheless, the ingredient can still produce irritation under some conditions, particularly when formulations are not appropriately designed or when concentrated raw material contacts the eyes or skin.
Sodium Laureth Sulfosuccinate has therefore become an important surfactant for formulations intended to provide effective cleansing with a comparatively mild sensory profile.
Sodium Laureth Sulfosuccinate is frequently selected for products marketed toward sensitive skin, baby care, facial cleansing, and gentle hair cleansing, although the mildness of a finished product depends on the complete surfactant system and formulation rather than on one ingredient alone.
The Cosmetic Ingredient Review concluded that alkyl PEG sulfosuccinates, including Sodium Laureth Sulfosuccinate, are safe for cosmetic use under the assessed conditions when formulated to be non-irritating.
The ethoxylated chain in Sodium Laureth Sulfosuccinate can also influence its interaction with other surfactants and formulation ingredients.
Different ethoxylation levels can alter the hydrophilic-lipophilic balance of the material, allowing formulators to select grades with different cleansing, foaming, solubilizing, and compatibility characteristics.
This makes the ingredient family adaptable to cleansing systems ranging from shampoos and facial washes to bath and personal-care formulations.
Sodium Laureth Sulfosuccinate can contribute to the removal of excess sebum and oily residues from hair and skin without relying exclusively on stronger detergent systems.
Sodium Laureth Sulfosuccinate relatively large, highly polar molecular structure is associated with limited dermal penetration, while its surfactant activity remains concentrated at the surface and in the aqueous formulation.
This combination has supported its incorporation into cleansing products intended for frequent washing and formulations designed around a milder sensory profile.
The ingredient can also influence the texture and sensory characteristics of cleansing formulations through its interaction with water, micelles, co-surfactants, and polymers.
Formulators can combine it with amphoteric surfactants such as betaines or other anionic surfactants to modify foam density, viscosity, detergency, and after-feel.
The final performance depends strongly on the complete surfactant mixture rather than on Sodium Laureth Sulfosuccinate alone.
Cosmetics Ingredients Functions: CLEANSING
FOAMING
SURFACTANT - CLEANSING
SURFACTANT - FOAM BOOSTING
SURFACTANT - HYDROTROPE
Cosmetic Ingredient Review (CIR): DISODIUM 4-LAURETH SULFOSUCCINATE (39354-45-5)
LogP: 4.071 (est)
Sodium Laureth Sulfosuccinate can also be described as an ethoxylated sulfosuccinate surfactant whose performance changes with the average number of ethylene oxide units in the commercial material.
Grades such as Disodium Laureth-6, Disodium Laureth-9, and Disodium Laureth-12 Sulfosuccinate are therefore related materials within the same ingredient family rather than necessarily identical single-molecule substances.
Sodium Laureth Sulfosuccinate variation in ethoxylation can influence water solubility, viscosity, micelle formation, foaming behavior, and compatibility with other formulation ingredients.
Sodium Laureth Sulfosuccinate has a strongly hydrophilic ionic head group together with a hydrophobic alkyl portion, allowing it to accumulate at air-water and oil-water interfaces.
Recent surface-property measurements found that Sodium Laureth Sulfosuccinate has high surface activity and forms micellar aggregates above its critical micelle concentration.
These interfacial properties explain its effectiveness in lowering surface tension and helping water-based formulations wet, disperse, and remove oily materials.
Sodium Laureth Sulfosuccinate is also notable for its use in formulations designed around mild cleansing.
Sulfosuccinate surfactants have long been investigated as relatively mild anionic cleansing agents, particularly for personal-care products where excessive removal of skin lipids is undesirable.
This characteristic has contributed to their use in facial cleansers, shampoos, body washes, and baby-care cleansing products.
Sodium Laureth Sulfosuccinate can be combined with other anionic, amphoteric, and nonionic surfactants to adjust the cleansing and foaming profile of a finished formulation.
Blending surfactants allows formulators to balance detergency, foam generation, viscosity, sensory properties, and skin compatibility rather than relying on Sodium Laureth Sulfosuccinate as an isolated active surfactant.
Its behavior can therefore vary considerably depending on the complete surfactant system, electrolyte concentration, pH, and other formulation components.
Another relevant characteristic is that Sodium Laureth Sulfosuccinate is commonly supplied as a concentrated aqueous raw material rather than as a pure isolated molecular species.
The Cosmetic Ingredient Review describes commercial materials containing approximately 30–40% active ingredient, with the remainder consisting primarily of water and, depending on the grade, formulation auxiliaries or processing-related components.
Consequently, the physical properties listed for a commercial product should not automatically be treated as properties of a hypothetical pure molecular compound.
The ingredient's molecular size and polarity also influence its behavior at biological interfaces.
The Cosmetic Ingredient Review assessment reported that dermal penetration of these alkyl PEG sulfosuccinates would not be expected to be significant because of their molecular characteristics.
This does not eliminate the possibility of surface irritation, however, because surfactants can interact directly with skin and eye surfaces even when systemic penetration is limited.
Sodium Laureth Sulfosuccinate is sometimes grouped with “sulfate-free” cleansing ingredients because its sulfonate functionality is chemically different from the sulfate ester found in Sodium Laureth Sulfate and Sodium Lauryl Sulfate.
The distinction is particularly relevant when formulators are developing cleansing products intended to avoid sulfate surfactants while maintaining effective foaming and detergency.
However, the term “sulfate-free” describes the surfactant chemistry and does not by itself mean that a finished product will be non-irritating or suitable for every skin type.
Its formulation behavior can also be affected by salts and other electrolytes present in the product.
Unlike some conventional anionic surfactants, sulfosuccinates can present challenges when formulators attempt to obtain high viscosity through simple salt thickening, so polymeric thickeners, co-surfactants, or other rheology modifiers may be required.
This is one reason commercial cleansing formulations often contain Sodium Laureth Sulfosuccinate as part of a broader surfactant and viscosity-control system.
Sodium Laureth Sulfosuccinate is particularly relevant to sulfate-free product development because its sulfonate-containing structure is chemically different from the sulfate ester structure of Sodium Laureth Sulfate.
This allows formulators to create cleansing products without using conventional sulfate surfactants while retaining substantial foaming and cleansing functionality.
However, a sulfate-free formulation can still contain other surfactants capable of producing irritation, so the complete formulation determines the final skin and eye compatibility.
The material is also used in formulations where controlled cleansing and foam generation are required at relatively moderate surfactant concentrations.
Commercial applications include shampoos, shower gels, facial cleansers, hand washes, shaving products, bubble baths, and other rinse-off personal-care products.
Industrial detergent applications have also been reported, including laundry and dishwashing formulations where cleansing and foaming properties are useful.
Another characteristic of this ingredient family is its ability to function alongside both sulfate-containing and sulfate-free surfactant systems.
Sodium Laureth Sulfosuccinate can therefore be used as part of mixed systems designed to balance detergency with foam quality and formulation tolerability rather than serving as a completely independent cleansing base.
This flexibility is useful when manufacturers need to modify an existing formulation without completely replacing its surfactant system.
Sodium Laureth Sulfosuccinate can also be incorporated into products intended for sensitive-skin cleansing, although “mild” should be understood as a formulation characteristic rather than an absolute property of the raw material.
The Cosmetic Ingredient Review concluded that Sodium Laureth Sulfosuccinate and related alkyl PEG sulfosuccinates are safe in cosmetic use at assessed concentrations when formulations are designed to be non-irritating.
The same assessment notes that ocular and skin irritation can occur, which is why concentration, exposure time, pH, and the other surfactants present remain important.
Because commercial Sodium Laureth Sulfosuccinate is frequently supplied as an aqueous active solution, manufacturers can incorporate it directly into water-based cleansing systems.
Commercial grades can differ substantially in active content, ethoxylation level, viscosity, pH, and supporting ingredients, so processing conditions should be selected according to the supplier's technical specification.
This is especially important when reproducing a formulation because two products sold under closely related INCI descriptions may not have identical physical or performance characteristics.
Uses Of Sodium Laureth Sulfosuccinate:
Sodium Laureth Sulfosuccinate, more commonly listed as Sodium Laureth Sulfosuccinate in cosmetic ingredient nomenclature, is primarily used as an anionic cleansing surfactant in personal-care formulations.
Sodium Laureth Sulfosuccinate helps remove sebum, dirt, oils, and other residues from the skin and hair by lowering surface tension and forming surfactant aggregates in water.
Its main commercial applications include shampoos, facial cleansers, shower gels, body washes, liquid hand soaps, and other rinse-off cleansing products.
In shampoos, Sodium Laureth Sulfosuccinate provides cleansing together with a rich and stable foam profile.
Sodium Laureth Sulfosuccinate can be used as a primary surfactant or combined with amphoteric and nonionic surfactants to adjust detergency, foam quality, viscosity, and the sensory properties of the finished product.
Sodium Laureth Sulfosuccinate makes it suitable for conventional shampoos as well as sulfate-free and mild-cleansing hair-care formulations.
The ingredient is also widely used in facial cleansers and body-wash formulations where effective removal of surface oils is required.
Its surfactant properties allow formulators to create products that cleanse the skin while generating a substantial amount of foam during washing.
Sodium Laureth Sulfosuccinate is consequently found in products such as facial washes, shower gels, liquid body cleansers, and hand-washing preparations.
Sodium Laureth Sulfosuccinate is used in products formulated for sensitive skin and baby cleansing.
Sodium Laureth Sulfosuccinate can form part of surfactant systems designed to provide effective cleansing while reducing reliance on more aggressive detergent combinations.
The Cosmetic Ingredient Review has concluded that the ingredient is safe for cosmetic use under the assessed conditions when formulations are designed to be non-irritating.
Another important use is as a foam-enhancing ingredient in cleansing formulations.
Sodium Laureth Sulfosuccinate can increase foam volume and contribute to the texture and persistence of lather when combined with other surfactants.
This property is useful in shampoos, bubble baths, shower products, facial cleansers, and other formulations where consumers associate abundant foam with the cleansing experience.
Sodium Laureth Sulfosuccinate can also function as a hydrotropic or formulation-support ingredient.
Sodium Laureth Sulfosuccinate presence can improve the water compatibility of certain surfactant systems and assist the incorporation or stabilization of other formulation components.
This makes it useful in complex cleansing formulations containing combinations of anionic, amphoteric, and nonionic surfactants.
The ingredient is used in shaving products and other formulations where a combination of cleansing, wetting, and foam formation is desirable.
Sodium Laureth Sulfosuccinate surfactant activity helps distribute water and other formulation components across the skin surface while generating lather during application.
This makes it suitable for shaving creams, shaving washes, and related rinse-off personal-care products.
Sodium Laureth Sulfosuccinate is also incorporated into some oral-care formulations, including toothpaste and related cleansing products.
In these applications, its surfactant properties can assist the dispersion of ingredients and contribute to foaming during brushing.
The ingredient has been documented in cosmetic use categories involving oral and mucosal exposure, although the concentration and finished-product formulation determine the actual exposure profile.
Hair-care products beyond conventional shampoos can also contain Sodium Laureth Sulfosuccinate.
Sodium Laureth Sulfosuccinate has been reported in formulations such as hair sprays, hair-coloring shampoos, and other products where surfactant functionality is useful for cleansing or formulation performance.
Its compatibility with other surfactants allows manufacturers to incorporate it into multifunctional hair-care systems rather than limiting its use to basic shampoo formulations.
The surfactant is used in bath products such as bubble baths and other foaming bath preparations.
Its ability to produce and stabilize foam makes it suitable for products in which prolonged lather formation is an important part of the formulation.
Sodium Laureth Sulfosuccinate can also be combined with other cleansing and conditioning ingredients to create bath products with different sensory and performance characteristics.
Outside personal care, Sodium Laureth Sulfosuccinate is used as a component of household and institutional cleaning products.
Commercial formulations can include it in laundry liquids, laundry powders, dishwashing products, and other detergent systems where cleansing and foam generation are required.
In these applications, it is generally used as one component of a broader surfactant system rather than as the only cleaning agent.
Sodium Laureth Sulfosuccinate can also be used in sulfate-free detergent systems as an alternative anionic surfactant.
Sodium Laureth Sulfosuccinate sulfosuccinate structure is chemically different from sulfate surfactants such as Sodium Laureth Sulfate, allowing formulators to develop cleansing products without using conventional sulfate surfactants.
This has made it particularly relevant to personal-care products marketed around sulfate-free cleansing concepts.
Sodium Laureth Sulfosuccinate, more commonly identified in cosmetic ingredient nomenclature as Sodium Laureth Sulfosuccinate, is primarily used as an anionic surfactant in personal-care cleansing products.
Sodium Laureth Sulfosuccinate provides cleansing, foaming, and foam-supporting properties and is commonly incorporated into shampoos, shower gels, facial cleansers, body washes, and liquid hand soaps.
Commercial grades are often selected as part of mixed surfactant systems to balance cleansing performance, foam characteristics, and formulation mildness.
The ingredient is used in sulfate-free shampoo formulations where formulators want an anionic cleansing surfactant with strong foaming capability.
Sodium Laureth Sulfosuccinate can be combined with amphoteric and nonionic surfactants to modify lather, viscosity, detergency, and the sensory properties of the finished shampoo.
This makes it suitable for both everyday shampoos and formulations developed for frequent or gentle hair cleansing.
Sodium Laureth Sulfosuccinate is also used in facial cleansing products and body washes designed to remove sebum, dirt, sweat, and cosmetic residues from the skin.
Its surfactant structure allows oily substances to become dispersed in the aqueous phase during washing, facilitating their removal during rinsing.
Sodium Laureth Sulfosuccinate is therefore found in facial washes, shower gels, bath products, liquid soaps, and other rinse-off cleansing formulations.
The ingredient is used in products formulated for babies and sensitive skin because it can provide cleansing and foam without relying exclusively on conventional sulfate surfactants.
Commercial formulation guidance specifically lists baby-care and sensitive-skin products among its applications.
However, the mildness of a finished product depends on the complete surfactant system, concentration, pH, and other formulation ingredients rather than on this ingredient alone.
Sodium Laureth Sulfosuccinate is used as a foam booster and foam stabilizer in cleansing formulations.
Sodium Laureth Sulfosuccinate can improve the quality and persistence of foam when combined with other anionic or nonionic surfactants, making it useful where a rich and stable lather is desired.
This function is particularly relevant to shampoos, shower gels, bubble baths, shaving products, and facial cleansers.
The surfactant is incorporated into shaving creams and shaving washes because its surface activity assists wetting, cleansing, and lather formation.
Its presence can help distribute the aqueous formulation over the skin and support the formation of a uniform foam during shaving.
Commercial sulfosuccinate grades are therefore used in shaving and other rinse-off grooming products alongside conditioning and lubricating ingredients.
Sodium Laureth Sulfosuccinate also appears in bubble baths and bath gels where foam generation is an important formulation objective.
Its ability to form stable surfactant aggregates and interact with other foaming ingredients helps produce the prolonged lather expected from these products.
Sodium Laureth Sulfosuccinate can be combined with fragrances, emollients, humectants, and other surfactants to create different bath-product textures and sensory profiles.
In hair-care formulations, the ingredient can be used beyond conventional shampoo products.
Commercial applications include hair sprays, hair-coloring shampoos, hair conditioners or smoothing products, and other hair-treatment formulations where surfactant or formulation-support functionality is required.
Sodium Laureth Sulfosuccinate inclusion can assist formulation performance while allowing manufacturers to construct cleansing or treatment systems around different combinations of surfactants and conditioning agents.
Sodium Laureth Sulfosuccinate is also used in exfoliating and peeling products where surfactant activity is required alongside ingredients designed to remove surface impurities and dead skin cells.
Sodium Laureth Sulfosuccinate can provide cleansing and foam formation while supporting the dispersion of other ingredients throughout the aqueous formulation.
Commercial formulation databases list exfoliating and peeling products among applications for this ingredient.
The ingredient is incorporated into intimate-hygiene and feminine-care cleansing products where mild rinse-off cleansing is required.
Its surfactant activity allows formulations to remove surface contaminants while maintaining a water-based cleansing system containing other conditioning and pH-adjusting ingredients.
Commercial sulfosuccinate grades are specifically marketed for intimate-hygiene applications and products intended for sensitive skin.
Sodium Laureth Sulfosuccinate is used in dishwashing liquids and other hand-washing detergents because it provides both cleansing and foam formation.
Its ability to interact with oily materials makes it useful for dispersing grease and food residues during washing.
Industrial suppliers also list laundry liquids, laundry powders, dishwashing products, and household cleaning formulations among its non-cosmetic applications.
The surfactant can be incorporated into household and institutional cleaning products as one component of a broader detergent system.
Applications include general cleaning formulations where wetting, detergency, dispersion, and foam formation are required.
Depending on the formulation, it may be combined with other surfactants, builders, solvents, chelating agents, preservatives, and rheology modifiers to achieve the required cleaning performance.
Sulfosuccinates are also used as wetting and spreading agents in certain agricultural formulations.
The Cosmetic Ingredient Review has reported their use in water-soluble pesticide sprays as well as in liquid fertilizers, insecticides, fungicides, and herbicides.
In these applications, surfactant activity can help improve the spreading and wetting of aqueous formulations over plant or other treated surfaces.
Sodium Laureth Sulfosuccinate can additionally serve as a hydrotropic and formulation-support ingredient in certain surfactant systems.
This function can help improve formulation clarity or assist the incorporation and dispersion of other components in water-based products.
Sodium Laureth Sulfosuccinate use as a hydrotrope, emulsifying aid, dispersing agent, and foam-support ingredient gives it applications beyond its primary role as a cleansing surfactant.
Safety Profile Of Sodium Laureth Sulfosuccinate:
Sodium Laureth Sulfosuccinate, more commonly identified as Sodium Laureth Sulfosuccinate, generally has a relatively favorable safety profile when used in properly formulated cosmetic products.
However, available GHS notifications are not completely consistent, with some classifications identifying the material as a skin irritant or eye irritant and others reporting more serious eye-damage classifications.
These differences can result from variations in commercial grade, concentration, impurities, additives, and the specific material assessed.
Eye exposure is the principal safety concern reported for concentrated Sodium Laureth Sulfosuccinate materials.
Aggregated ECHA notifications include H318, indicating serious eye damage, as well as H319, indicating serious eye irritation, among reported classifications.
For this reason, direct contact with concentrated raw material should be avoided and appropriate eye protection should be used during industrial or laboratory handling.
Skin irritation can also occur when concentrated material is applied directly to the skin for prolonged periods.
The Cosmetic Ingredient Review assessment reported mild skin irritation in some testing conditions, while other human studies using 5–10% aqueous solutions did not produce significant irritation.
This variation demonstrates that concentration, exposure conditions, and the formulation environment can substantially influence the skin response.
The surfactant should therefore not be considered completely non-irritating simply because it is commonly used in mild personal-care products.
Surfactants can interact with the skin surface and remove lipids, and concentrated raw materials can behave differently from highly diluted finished formulations.
Finished cosmetic products should consequently be formulated to minimize irritation, particularly when intended for sensitive skin or frequent use.
Inhalation is mainly relevant when the ingredient is handled in a form capable of producing airborne droplets or particles rather than during normal use of a diluted liquid cosmetic product.
Industrial handling should minimize aerosols and unnecessary airborne exposure, particularly during transfer, mixing, or processing of concentrated materials.
Adequate ventilation and suitable personal protective equipment should be used according to the specific supplier's safety data sheet.
Sodium Laureth Sulfosuccinate Procurement and Technical Support:
Ataman Kimya supports customers looking for Sodium Laureth Sulfosuccinate with dependable supply solutions and relevant technical information for industrial and formulation requirements.
Additional support can be provided regarding product specifications, available documentation, and the evaluation of suitable product options based on the intended application.
