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CAS NO:9016-00-6
EC NO:203-497-4
Dimethicone 5 is a silicone-based ingredient used in many personal care products.
Dimethicone 5 keeps all of the ingredients in a product from separating.
Dimethicone 5 also gives these products a smooth, silky texture.
When applied to the skin or hair, Dimethicone 5 creates a physical barrier to seal in hydration, keeping skin moisturized and hair frizz-free.
In cosmetics, Dimethicone 5 “helps to fill in fine lines and wrinkles,” says Jessie Cheung, MD, a board certified dermatologist.
Dimethicone 5 helps your makeup look even rather than cakey, and gives it a matte finish.
Dimethicone 5 is also noncomedogenic, meaning it won’t clog pores.
What Dimethicone 5 used in?
You can find Dimethicone 5 in many products for many different reasons.
The main places it shows up are:
Cosmetics.
This is because of Dimethicone 5’s ability to smooth the appearance of fine lines and form a protective barrier, Cheung explains.
Moisturizers and creams.
Dimethicone 5 forms a layer on the skin, thereby locking in hydration and decreasing water loss.
Shampoo, conditioner, and hairstyling products.
“Dimethicone 5 coats the strands and smooths the cuticles, giving a sleek and shiny look while protecting from heat,” Cheung says.
Anti-itch products.
Since Dimethicone 5 helps moisturize skin and retain water, it can help soothe dry, itchy skin.
Is Dimethicone 5 safe for your skin or hair?
Some people believe that Dimethicone 5 is harmful because it’s not natural.
Others say that since it forms a barrier, Dimethicone 5 seals in oil, sweat, dirt, and other things that can clog pores and lead to acne.
However, the amount of Dimethicone 5 in face and hair products is generally considered safe.
In a 2019 review, the Cosmetic Ingredient Review Expert Panel found that most over-the-counter products contain less than 15 percent Dimethicone 5.
Based on previous research, the review concluded that Dimethicone 5 in cosmetic products is safe.
“Though there is public concern about Dimethicone 5, there is no data to substantiate it.
It’s a safe product to use, and it’s very unlikely that it can be absorbed in the skin due to its large molecular weight,” says Peterson Pierre, MD, dermatologist and founder of the Pierre Skin Care Institute.
That said, anyone may have a reaction to any product.
If you notice any of the following, you may be having an allergic reaction:
redness
itching
swelling
burning
hives
irritation
If this happens, wash the product off with gentle soap and water, and stop using the product immediately.
If things don’t improve within a few days, see a healthcare provider, like your primary care doctor or dermatologist.
If the reaction is severe, see them immediately.
Also know that if you use hair care products with Dimethicone 5, it can build up on hair and prevent the penetration of moisturizing ingredients.
“Swap in a clarifying shampoo every so often,” Cheung recommends.
The bottom line
Dimethicone 5 is a silicone-based ingredient used in primers, foundations, moisturizers, shampoos, conditioners, and other skin and hair care products.
Dimethicone 5 gives a silky-smooth texture, helps retain moisture, and fills in lines and wrinkles so makeup looks even.
Research shows that the level of Dimethicone 5 found in personal care products is safe.
It’s also noncomedogenic and won’t clog pores.
“From a health perspective, there is no reason to avoid products with Dimethicone 5.
They have a nice cosmetic feel and do a good job moisturizing the skin and hair,” Pierre says.
However, some people may have a reaction to it.
If you notice any irritation, stop using the product and see a healthcare provider.
Use this product as directed. Some products require priming before use. Follow all directions on the product package. If you have any questions, ask your doctor or pharmacist.
Some products need to be shaken before use.
Check the label to see if you should shake the bottle well before using.
Apply to the affected areas of the skin as needed or as directed on the label or by your doctor.
How often you apply the medication will depend on the product and your skin condition.
To treat dry hands, you may need to use the product every time you wash your hands, applying it throughout the day.
If you are using this product to help treat diaper rash, clean the diaper area well before use and allow the area to dry before applying the product.
If you are using this product to help treat radiation skin burns, check with radiation personnel to see if your brand can be applied before radiation therapy.
Follow all the directions on the label for proper use.
Apply to the skin only. Avoid sensitive areas such as your eyes, inside your mouth/nose, and the vaginal/groin area, unless the label or your doctor directs you otherwise.
Check the label for directions about any areas or types of skin where you should not apply the product (e.g., on the face, any areas of broken/chapped/cut/irritated/scraped skin, or on a recently shaved area of the skin).
Consult your doctor or pharmacist for more details.
Use this medication regularly to get the most benefit from it.
Most moisturizers need water to work well.
Apply the product after bathing/showering while the skin is still damp.
For very dry skin, your doctor may instruct you to soak the area before using the product.
Long, hot, or frequent bathing/washing can worsen dry skin.
If your condition persists or worsens, or if you think you may have a serious medical problem, seek immediate medical attention.
Dimethicone 5 is a silicone-based polymer that is frequently used as a skin protectant in skincare products.
The second most common moisturizing ingredient found in moisturizers after petrolatum, Dimethicone 5 helps condition the skin—improving its softness and flexibility.
WHAT IS DIMETHICONE 5 USED FOR?
Dimethicone 5 contributes to the "slip" or "glide" felt upon the application of skincare products, making them spread easily onto the skin.
In addition, Dimethicone 5 coats the skin, helping to moisturize it by reducing water loss and providing the skin with softness and coverage—without feeling heavy.
WHO SHOULD USE DIMETHICONE 5?
Gentle and non-comedogenic (when applied to clean skin), Dimethicone 5 is an effective moisturizing ingredient for all skin types.
As a skin protectant at certain levels, Dimethicone 5 is especially useful for those whose skin needs an additional barrier that helps prevent moisture from escaping.
Dry, itchy and rough skin may benefit from skincare products that contain Dimethicone 5.
HOW IS DIMETHICONE 5 USED?
Dimethicone 5 can be found in ointments, creams, lotions, serums, sunscreens and lip balms.
To reap its moisturizing and skin-protectant benefits, use these products as directed.
HOW DOES DIMETHICONE 5 WORK?
Dimethicone 5 forms a barrier on the skin that helps minimizes water loss.
Dimethicone 5 also helps improve the skin’s smoothness and flexibility by filling gaps between the cells in the uppermost layer of your skin.
CAN DIMETHICONE 5 BE USED ON THE BODY?
Dimethicone 5 is a gentle, effective moisturizing ingredient for both the face and body.
Dimethicone 5 helps provide long-lasting skin-smoothing benefits, and is ideal for areas prone to rough, dry skin such as knees, elbows, hands and feet, and can help with certain skin conditions like eczema.
Dimethicone 5 has water repellent properties which forms a protective ‘glove’ against water-soluble irritants.
Recommended as a barrier to protect skin against nappy rash, bedsores and urinary incontinence as well as irritating substances such as soap, detergents, water and some chemicals
Ideally apply before putting babies nappies on, washing dishes, gardening, working on greasy / oily equipment or apparatus and prior to some medical procedures
May also be used to help restore dry skin chafing and dermatitis
Non-perfumed and suitable for use on sensitive skin
Dimethicone 5 has water repellent properties which forms a protective ‘glove’ against water-soluble irritants.
Recommended as a barrier to protect skin against nappy rash, bedsores and urinary incontinence as well as irritating substances such as soap, detergents, water and some chemicals
Ideally apply before putting babies nappies on, washing dishes, gardening, working on greasy / oily equipment or apparatus and prior to some medical procedures
May also be used to help restore dry skin chafing and dermatitis
Dimethicone 5 has water repellent properties which forms a protective ‘glove’ against water-soluble irritants.
Recommended as a barrier to protect skin against nappy rash, bedsores and urinary incontinence as well as irritating substances such as soap, detergents, water and some chemicals Ideally apply before putting babies nappies on, washing dishes, gardening, working on greasy / oily equipment or apparatus and prior to some medical procedures May also be used to help restore dry skin chafing and dermatitis Non-perfumed and suitable for use on sensitive skin
Dimethicone 5 is a silicone oil that is also known as polydimethylsiloxane (PDMS).
Dimethicone 5 has viscoelastic properties.
Dimethicone 5 is used as a surfactant, antifoaming agent, carminative in various products such as medical devices, food products, and lubricants.
Dimethicone 5 is used in a number of health and beauty products including hair care products such as shampoo, conditioner, leave-in conditioner, and de-tangling products.
On skin, it is also observed to have moisturizing actions.
A study found that that the 100 % Dimethicone 5 product is a safe and highly effective head lice treatment for children and may serve as less toxic and less resistance-prone alternative to pesticide-containing products
Dimethicone 5 is a colorless liquid with both cosmetic and therapeutic uses.
Dimethicone 5 is used in topical creams and ointments to help distribute the active ingredients.
Dimethicone 5 is used as an anti-foaming agent, a hair and skin conditioner, and in the treatment of head lice and, as an anti-bloating/anti-flatulence agent
Dimethicone 5 has water repellent properties which forms a protective ‘glove’ against water-soluble irritants.
Recommended as a barrier to protect skin against nappy rash, bedsores and urinary incontinence as well as irritating substances such as soap, detergents, water and some chemicals
Ideally apply before putting babies nappies on, washing dishes, gardening, working on greasy / oily equipment or apparatus and prior to some medical procedures
May also be used to help restore dry skin chafing and dermatitis
Non-perfumed and suitable for use on sensitive skin
Dimethicone 5 Cream is used as a repellent barrier to protect skin against water-soluble irritants.
Recommended as a barrier to protect skin against irritating substances such as soap, detergents, water and some chemicals.
Warnings & Cautions
Keep out of reach of children.
For external use only.
If irritation occurs, discontinue use and seek advice from a health professional.
Store below 30ºC.
Non Volatile
Excellent spreadability
Sweat and sebum resistance
Outstanding emolliency and lubricity
Low viscosity dimethicones (5 – 20 cSt): miscible in organic ingredients
Middle viscosity dimethicones (50 – 1000 cSt): as oil additive in skin care formulations
High viscosity dimethicones (5000 – 60000cSt):
Long chain polymer to improve combing in Hair Care products
Dimethyl silicone is also known as methyl silicone oil and polydimethylsiloxane liquid.
It appears as colorless transparent viscous liquid, being tasteless, odorless and non-toxic.
The molecular formula is CH3 [Si (cH3) 2] nSi (CH3) 3.
The average molecular weight is 5000 ~ 100000.
Based on the differences on the molecular weight, kinematic viscosity varies from 1.0 × 10-6 ~ 100000 × 10-6 square meters / second.
Long-term use temperature range is -50 ~ 180 ℃.
In isolated air or inert gas, it can be subject to long-term use at 200 ℃.
Viscosity coefficient: 0.31 ~ 0.61.
Surface tension: 1.59 ~ 2.15 × 10-4N / cm.
Dielectric constant (23 ℃, 100Hz): 2.18 ~ 2.17.
Volume resistivity (23 °C): 1.0 × 1014 to 1.0 × 1016Ωcm3.
Dielectric loss tangent (23 ℃, 100Hz):0.00002~0.00004.
Breakdown voltage strength: 13.7 ~ 17.7kV / mm.
It is soluble in benzene, toluene, xylene and ethyl ether, partially soluble in ethanol, butanol and acetone, insoluble in cyclohexanol, methanol, paraffin oil and vegetable oil.
It has excellent hydrophobic moisture resistance, good light transmission, and chemical stability.
Widely used in insulation, heat, moisture-proof filler, defoamer, mold release agent, lubricant and surface treatment agent.
It is produced by the reaction between octamethylcyclotetrasiloxane and hexamethyldisiloxane in the presence of concentrated sulfuric acid or tetramethylammonium hydroxide
Uses:
A silicone oil consisting of a mixture of fully methylated linear siloxane polymers end-blocking with trimethylsiloxy units.
Commonly used in skin and hair products.
Dimethicone 5 is a form of silicone used to give products lubricity, slip, and good feel.
Dimethicone 5 can also serve as a formulation defoamer and help reduce the feeling of greasiness that some creams leave on the skin immediately upon application.
In addition, Dimethicone 5 is reported to protect the skin against moisture loss when used in larger quantities.
Dimethicone 5 improves product flow and spreadability.
In combination with other ingredients, Dimethicone 5 becomes a good waterproofing material for sunscreen emulsions, and helps reduce the greasiness often seen in high-SPF preparations.
Indications
Dimethicone 5 ointments are excellent water-protective agents because they have an extremely low surface tension and penetrate crevices in the skin to form a plastic-like barrier.
Further, they are nontoxic, inert, stable, and water repellent.
As such, they are useful as barrier creams in industry or wherever constant or frequent exposure to aqueous compounds is a problem.
They will not, however, protect well against solvents, oils, or dusts.
Pharmaceutical Applications
Dimethicone 5 of various viscosities are widely used in cosmetic and pharmaceutical formulations.
In topical oil-in-water emulsions Dimethicone 5 is added to the oil phase as an antifoaming agent.
Dimethicone 5 is hydrophobic and is also widely used in topical barrier preparations.
Therapeutically, Dimethicone 5 may be used with simethicone in oral pharmaceutical formulations used in the treatment of flatulence.
Dimethicone 5 is also used to form a waterrepellent film on glass containers.
Dimethicone-5 belongs to a group of polymeric organosilicon compounds that are commonly referred to as silicones.
Dimethicone-5 is the most widely used silicon-based organic polymer, as its versatility and properties lead to many applications.
Dimethicone-5 is particularly known for its unusual rheological (or flow) properties. PDMS is optically clear and, in general, inert, non-toxic, and non-flammable.
Dimethicone-5 is one of several types of silicone oil (polymerized siloxane).
Dimethicone-5s applications range from contact lenses and medical devices to elastomers; it is also present in shampoos (as it makes hair shiny and slippery), food (antifoaming agent), caulking, lubricants and heat-resistant tiles.
Chemical Properties
colourless liquid with a viscosity, The Dimethicone 5 materials are excellent examples of silicones because of their chemical properties and widespread industrial use.
They can be manufactured as gels, resins, fluids, or elastomers, depending on the cross-linking characteristics.
Toxicity testing using polydimethylsiloxane compounds on animals has found little, if any, harmful effects associated with chronic exposure.
These tests include oral dosing and teratogenicity testing (Cutler et al., 1974; Kennedy et al., 1976).
Human health effects associated with silicone implants have been reported.
Dimethicone 5 is the most prevalent silicone used medically and has been incorporated into many prostheses, including breast implants.
USES:
Temporarily protects and helps relieve chapped or cracked skin
Antiflatulent.
Silicones are polymeric materials having silicon and oxygen on their composition.
They are largely inert compounds usually heat-resistant, nonstick, and rubberlike.
Dimethicone 5 (PDMS, molecular formula (C2H6OSi)n, density 965 kg/m3, boiling point: < 200℃, shear modulus between 100 kPa and 3 MPa, loss tangent less than 0.001) is a viscoelastic polymer (elastomer).
Dimethicone 5 is widely used in microfluidic technology thanks to some of its unique properties: it is low cost, nontoxic, chemically resistant, and stable against humidity and temperature variations.
Dimethicone 5 also presents low interfacial energy, which allows it to avoid chemical interactions with other polymers and solutions in the microfluidic channels.
After polymerization and cross-linking, solid PDMS presents hydrophobic surface.
A treatment using plasma oxidation is frequently used to alter the surface chemistry by adding silanol (SiOH) groups to the surface terminations and make the surface hydrophilic (wettable).
Dimethicone 5 is usually used as sealant, structural microchannel material or elastomer stamping matrix in soft lithography techniques like microcontact printing and micromolding.
Dimethicone 5 is an antifoaming agent used in fats and oils.
Dimethicone 5 prevents foaming and spattering when oils are heated and prevents foam formation during the manufacture of wine, refined sugar, gelatin, and chewing gum.
Dimethicone 5 is also termed methyl polysilicone and methyl silicone.
Pharmaceutical Applications
Simethicone is a mixture of Dimethicone 5 and silica gel, known for their antifoaming properties.
Dimethicone 5 is an orally administered suspension containing polysiloxanes and silicon dioxide.
Dimethicone 5 is an antifoaming agent and is used to reduce bloating by decreasing the surface tension in bubbles.
Excessive formation of gas bubbles in the stomach and intestines can be painful and can also be of hindrance for any ultrasound examination.
Dimethicone 5 can be found in antacids and in suspensions given to babies against colic.
Applications
Surfactants and antifoaming agents
Dimethicone 5 is a common surfactant and is a component of defoamers.
Dimethicone 5, in a modified form, is used as an herbicide penetrant and is a critical ingredient in water-repelling coatings, such as Rain-X.
Hydraulic fluids and related applications
Dimethicone 5 is used in the active silicone fluid in automotive viscous limited slip differentials and couplings.
What are the Uses of Dimethicone 5?
The most common usage area is the cosmetics industry.
Dimethicone 5 has excellent hydrophobic moisture and good light transmission in this area.
Dimethicone 5 has an intensive use due to its oil properties, filling the fine lines on the skin and abrasion from the skin.
Dimethicone 5 is used in the manufacture of cosmetics, in the manufacture of body lotions, in the manufacture of cosmetic styling products, in hair styling.
At the same time, because it gives suitable features for personal care.
Dimethicone 5 natural silicon derivatives form oxane from moisture in the skin in an augmented manner, giving it a boost.
The diapers used in babies are in use in their use in baby skin products.
Here it reduces itching and healing while restoring moisture.
Dimethicone 5 is used in shampoos, conditioners and hair care production.
The active ingredient can be used frontally.
Dimethicone 5 is used in the manufacture of root canal sealers.
Dimethicone 5, another widely used polymer, has a silicon-oxygen main chain instead of a carbon main chain.
Dimethicone 5 feature is that it is less dependent on temperature than other rubbers.
Dimethicone 5 is used in drainage pipes and catheters, some vascular prostheses, and membrane oxygenators (respirators) due to its high oxygen permeability. Because of its excellent flexibility and stability, it is used in numerous prostheses such as finger joints, blood vessels, heart valves, breast implants, external ear, jaw and nose implants.
Polycarbonate, a hard material, is synthesized as a result of the polymerization of bisphenol A and phosgene.
Due to their high impact resistance, they are used in eyeglasses and safety glasses, oxygenators and heart-lung machines.
Dimethicone 5 has water repellent properties which forms a protective ‘glove’ against water-soluble irritants.
Recommended as a barrier to protect skin against nappy rash, bedsores and urinary incontinence as well as irritating substances such as soap, detergents, water and some chemicals
Ideally apply before putting babies nappies on, washing dishes, gardening, working on greasy / oily equipment or apparatus and prior to some medical procedures
May also be used to help restore dry skin chafing and dermatitis
Non-perfumed and suitable for use on sensitive skin
IUPAC NAMES:
Dimethyl polysiloxane
dimethyl(oxo)silane
POLY(DIMETHYLSILOXANE)
poly(dimethylsiloxane)
Poly(oxy(dimethylsilylene))
Poly[oxy(dimethylsilylene)]
Polydimethylsiloxane
Polydimethylsiloxane gum
SYNONYMS:
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERM
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, BLEND
POLYDIMETHYLSILOXANES, TRIMETHYLSILOXY TERMINATED
SILICONE FLUID
SILICONE FLUID, 100
SILICONE FLUID 1,000
SILICONE FLUID 500
Dimethylpolysiloxan
Polydimethylsiloxane,trimethylsiloxyterminated,M.W.1250
Polydimethylsiloxane,trimethylsiloxyterminated,M.W.14,000
Polydimethylsiloxane,trimethylsiloxyterminated,M.W.2000
Polydimethylsiloxane,trimethylsiloxyterminated,M.W.28,000
Polydimethylsiloxane,trimethylsiloxyterminated,M.W.410
Polydimethylsiloxane,trimethylsiloxyterminated,M.W.770
Poly(dimethylsiloxane), sec. standard, M.W. 90,200, M.N. 46,000
polydimethylsiloxane, trimethylsiloxy terminated, m.w. 139,000
polydimethylsiloxane, trimethylsiloxy terminated, m.w. 4000
polydimethylsiloxane, trimethylsiloxy terminated, m.w. 6000
polydimethylsiloxane, trimethylsiloxy terminated, m.w. 9000
polydimethylsiloxane, trimethylsiloxy terminated, m.w. 17,000
polydimethylsiloxane, trimethylsiloxy terminated, m.w. 237
ORGANO-POLYSILOXANES
POLYDIMETHYLSILOXANEFLUID
SILICONEEMULSIONY-12386
SILICONEOIL20CP
POLYDIMETHYLSILOXANE GUM, VISCOSITY 10-20.000.000 CST.
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED: VISCOSITY 1.5 CST.
RED DYE IN SILICONE, VISCOSITY 100 CST.
POLYDIMETHYLSILOXANE, EXTREME LOW VOLATILITY, VISCOSITY 1000 CST.
POLYDIMETHYLSILOXANE, REDUCED VOLATILITY, VISCOSITY 100 CST.
BLUE DYE IN SILICONE, VISCOSITY 100 CST.
POLYDIMETHYLSILOXANE SILICONE EMULSION, VISCOSITY >100000 CST.
POLYDIMETHYLSILOXANE, REDUCED VOLATILITY, VISCOSITY 20 CST.
POLYDIMETHYLSILOXANE, EXTREME LOW VOLATILITY, VISCOSITY 350 CST.
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, EXTREME LOW VOLATILITY, VISCOSITY 12.500 CST.
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, FLUID BLEND, VISCOSITY 200 CST.
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, REDUCED VOLATILITY, VISCOSITY 7.0 CST.
POLYDIMETHYLSILOXANE SILICONE EMULSION, VISCOSITY 1000 CST.
POLYDIMETHYLSILOXANE SILICONE EMULSION: 50% IN WATER, 10.000 CST.
POLYDIMETHYLSILOXANE SILICONE EMULSION: VISCOSITY 100 CST.
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, 5cs
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, 60,000cs
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, 600,000cs
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, 7cs
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, BLEND, 200-500cs
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, COLORED
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, EXTREME LOW VOLATILTY, 1,000cs
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, EXTREME LOW VOLATILTY, 12,500cs
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, EXTREME LOW VOLATILTY, 350cs
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, REDUCED VOLATILITY, 5,000cs
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, REDUCED VOLATILTY, 100cs
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, REDUCED VOLATILTY, 20cs
POLYDIMETHYLSILOXANE, TRIMETHYLSILOXY TERMINATED, REDUCED VOLATILTY, 7cs
Poly(dimethylsiloxane),Dimethylpolysiloxane
Dimethylpolysiloxane,Polydimethylsiloxane
Polydimethylsiloxane (500 mg)
Methylsilicone oil I
