Ingredient review
Trifluoropropyl Dimethicone/PEG-10 Crosspolymer
INCI: TRIFLUOROPROPYL DIMETHICONE/PEG-10 CROSSPOLYMER
A silicone polymer that helps products stay put and resist water, but may feel heavy on some skin types.
In plain English
This is a synthetic silicone ingredient that forms a flexible, breathable film on the skin. It helps sunscreen and makeup stay in place longer, especially when you sweat or go swimming. Think of it like a very thin, invisible raincoat for your skin — it doesn't clog pores for most people, but it can feel a bit slick or heavy if you have very oily skin.
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
Trifluoropropyl Dimethicone/PEG-10 Crosspolymer 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 Trifluoropropyl Dimethicone/PEG-10 Crosspolymer.
- 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 crosslinked silicone polymer that combines trifluoropropyl groups (which repel water and oil) with PEG-10 (a water-friendly chain). This structure creates a flexible film that adheres to skin and resists wash-off.
How it works
When applied, the polymer spreads into a thin, even layer that dries down to a flexible film. The trifluoropropyl part repels water and oil, while the PEG-10 part helps the ingredient mix with other formula components. The crosslinked structure keeps the film from cracking or flaking, improving wear time and water resistance.
Pros
Boosts water resistance
Helps sunscreen and makeup stay effective even when you sweat or swim, so you don't have to reapply as often.
Smooth application
Spreads easily and evenly, reducing patchiness and making products feel silky on the skin.
Cons and cautions
Can feel heavy on oily skin
The silicone film may feel slick or greasy if you have very oily skin, potentially contributing to a shiny look.
Environmental persistence
Like many silicones, this ingredient is not readily biodegradable and can accumulate in waterways, raising eco-concerns.
Best for
- People who want long-wearing, water-resistant sunscreen or makeup
- Those with normal to dry skin who don't mind a slight silicone feel
Use caution if
- People with very oily or acne-prone skin who prefer lightweight, non-silicone textures
Usage tips
Safety summary
Generally recognized as safe for topical use at typical concentrations. Low irritation and comedogenic risk. No significant safety concerns have been reported in cosmetic use.
Research notes
Limited peer-reviewed studies on this specific polymer, but silicone crosspolymers as a class are well-studied for safety and efficacy in cosmetics. The trifluoropropyl group adds water and oil repellency without increasing toxicity.
Common label clues
- Typical concentration
- 1–10%
- Regulatory status
- Approved for use in cosmetics in the US (FDA), EU (CosIng), and many other regions. No specific concentration limits are set, but typical use levels are low.
- Common uses
- Sunscreens, Long-wear foundations, Water-resistant makeup, Primers
- Environmental note
- Silicone-based polymers like this one are not biodegradable and may accumulate in the environment. Some brands are moving toward more eco-friendly alternatives.
Good to know
- This ingredient is often found in 'water-resistant' or 'sweatproof' sunscreens and long-wear foundations.
- It is considered safe for use in cosmetics by major regulatory bodies, but its environmental impact is a growing concern.
Common questions
What is Trifluoropropyl Dimethicone/PEG-10 Crosspolymer in beauty products?
This is a synthetic silicone ingredient that forms a flexible, breathable film on the skin. It helps sunscreen and makeup stay in place longer, especially when you sweat or go swimming. Think of it like a very thin, invisible raincoat for your skin — it doesn't clog pores for most people, but it can feel a bit slick or heavy if you have very oily skin.
What does Trifluoropropyl Dimethicone/PEG-10 Crosspolymer do in a beauty product?
When applied, the polymer spreads into a thin, even layer that dries down to a flexible film. The trifluoropropyl part repels water and oil, while the PEG-10 part helps the ingredient mix with other formula components. The crosslinked structure keeps the film from cracking or flaking, improving wear time and water resistance.
Is Trifluoropropyl Dimethicone/PEG-10 Crosspolymer safe for most people?
Generally recognized as safe for topical use at typical concentrations. Low irritation and comedogenic risk. No significant safety concerns have been reported in cosmetic use.
Who should be careful with Trifluoropropyl Dimethicone/PEG-10 Crosspolymer?
People with very oily or acne-prone skin who prefer lightweight, non-silicone textures
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.