Ingredient review
Triethoxysilylpropylcarbamoyl Ethoxypropyl Butyl Dimethicone
INCI: TRIETHOXYSILYLPROPYLCARBAMOYL ETHOXYPROPYL BUTYL DIMETHICONE
A high-performance silicone film former that helps makeup and sunscreen stay put without feeling heavy or greasy.
In plain English
This ingredient is a type of silicone that dries down to a flexible, invisible film on your skin or hair. It helps makeup last longer, makes sunscreen more water-resistant, and gives hair a smooth, hold without stiffness. Think of it like a gentle, breathable shield that keeps products in place.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Triethoxysilylpropylcarbamoyl Ethoxypropyl Butyl Dimethicone is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Triethoxysilylpropylcarbamoyl Ethoxypropyl Butyl Dimethicone.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A synthetic silicone polymer with reactive silane groups that crosslink as the product dries, forming a durable yet flexible film. It is a modified dimethicone designed for enhanced adhesion and water resistance.
How it works
When applied, the ingredient spreads into a thin layer. As the solvent evaporates, the silane groups react with moisture in the air or on the skin, creating a crosslinked network that bonds to the surface. This film resists water, sweat, and rubbing, keeping the active ingredients (like sunscreen or pigment) in place longer.
Pros
Excellent wear time
Forms a durable film that keeps makeup and sunscreen intact for hours, even in humid or sweaty conditions.
Comfortable feel
Unlike some older film formers, this silicone polymer dries flexible and non-tacky, so skin and hair feel smooth, not stiff.
Cons and cautions
Requires double cleansing
Because it forms a water-resistant film, a simple water rinse won't remove it. You'll likely need an oil-based cleanser or micellar water to break it down.
Not biodegradable
As a synthetic silicone, it does not readily break down in the environment, which may be a concern for eco-conscious users.
Best for
- Anyone wanting long-lasting makeup or water-resistant sunscreen
- People with oily skin who need a matte, stay-put finish
Use caution if
- Those who prefer silicone-free or fully biodegradable formulations
Usage tips
Safety summary
Considered safe for cosmetic use by industry panels. Low irritation and comedogenic potential. No significant safety concerns at typical concentrations.
Research notes
Safety data is based on general silicone polymer toxicology. No specific human or animal studies were found for this exact compound, but similar dimethicone derivatives have a long history of safe use.
Common label clues
- Typical concentration
- 1% to 10% in leave-on products; up to 20% in some hair styling formulas
- Regulatory status
- Approved for cosmetic use in the EU, US, and most major markets. No known restrictions at typical use levels.
- Common uses
- Long-wear foundations, Waterproof mascaras, Sunscreens, Hair styling products, Primers
- Environmental note
- As a silicone derivative, it is not biodegradable. However, it is not classified as bioaccumulative or toxic to aquatic life at typical cosmetic concentrations.
Good to know
- This ingredient is often listed near the end of INCI lists because it is used at low concentrations for its film-forming effect.
- It is compatible with both water-in-oil and oil-in-water formulations.
Common questions
What is Triethoxysilylpropylcarbamoyl Ethoxypropyl Butyl Dimethicone in beauty products?
This ingredient is a type of silicone that dries down to a flexible, invisible film on your skin or hair. It helps makeup last longer, makes sunscreen more water-resistant, and gives hair a smooth, hold without stiffness. Think of it like a gentle, breathable shield that keeps products in place.
What does Triethoxysilylpropylcarbamoyl Ethoxypropyl Butyl Dimethicone do in a beauty product?
When applied, the ingredient spreads into a thin layer. As the solvent evaporates, the silane groups react with moisture in the air or on the skin, creating a crosslinked network that bonds to the surface. This film resists water, sweat, and rubbing, keeping the active ingredients (like sunscreen or pigment) in place longer.
Is Triethoxysilylpropylcarbamoyl Ethoxypropyl Butyl Dimethicone safe for most people?
Considered safe for cosmetic use by industry panels. Low irritation and comedogenic potential. No significant safety concerns at typical concentrations.
Who should be careful with Triethoxysilylpropylcarbamoyl Ethoxypropyl Butyl Dimethicone?
Those who prefer silicone-free or fully biodegradable formulations
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.