Ingredient review
PEG-10 Nonafluorohexyl Dimethicone Copolymer
INCI: PEG-10 Nonafluorohexyl Dimethicone Copolymer
A high-tech silicone polymer that helps makeup and sunscreen stay put and feel silky, but it's synthetic and not biodegradable.
In plain English
This ingredient is a special type of silicone that spreads easily on skin, creating a smooth, water-resistant film. It helps makeup last longer and gives a silky feel without being greasy. Think of it like a very thin, breathable plastic wrap that helps products stay 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
PEG-10 Nonafluorohexyl Dimethicone Copolymer 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 PEG-10 Nonafluorohexyl Dimethicone Copolymer.
- 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 copolymer made by combining polyethylene glycol (PEG), a fluorinated compound (nonafluorohexyl), and dimethicone (a common silicone). This structure gives it both water-repelling and film-forming properties.
How it works
When applied, the molecules align to form a thin, flexible film on the skin. This film resists water and sweat, helps other ingredients stay put, and gives a smooth, non-tacky feel. The PEG part also helps it mix well with other ingredients.
Pros
Excellent water resistance
Helps sunscreens and makeup stay effective even when you sweat or get wet, reducing the need for frequent reapplication.
Silky, non-greasy feel
Creates a smooth, velvety texture that makes products feel luxurious and comfortable on the skin without clogging pores.
Cons and cautions
Not biodegradable
As a fluorinated silicone polymer, it may persist in the environment, raising concerns for eco-conscious users.
Synthetic origin
Fully lab-made, which may not appeal to those seeking natural or minimal-ingredient routines.
Best for
- People who want long-wearing, water-resistant makeup or sunscreen
- Those with normal to oily skin who prefer a silky, non-greasy finish
Use caution if
- Individuals who strictly avoid silicones or synthetic polymers in their skincare
Usage tips
Safety summary
Generally considered safe for topical use in cosmetics at typical concentrations. Low irritation and comedogenic risk. However, long-term environmental persistence is a concern, and those with very sensitive skin may want to patch-test due to the PEG component.
Research notes
Limited peer-reviewed studies specifically on this copolymer, but silicones and PEGs have a long history of safe use in cosmetics. The fluorinated segment is novel and less studied for skin absorption. Safety assessments rely on analogy to similar silicone polymers.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions. No specific restrictions beyond general cosmetic safety requirements.
- Common uses
- Foundations, Sunscreens, Primers, Long-wear makeup, Water-resistant formulas
- Environmental note
- Fluorinated silicones like this one are not readily biodegradable and may accumulate in the environment. Some manufacturers are moving toward more eco-friendly alternatives.
Good to know
- This ingredient is often found in 'transfer-proof' or '24-hour wear' makeup formulas.
- The 'PEG-10' part indicates it contains 10 units of polyethylene glycol, which helps it mix with water-based ingredients.
Common questions
What is PEG-10 Nonafluorohexyl Dimethicone Copolymer in beauty products?
This ingredient is a special type of silicone that spreads easily on skin, creating a smooth, water-resistant film. It helps makeup last longer and gives a silky feel without being greasy. Think of it like a very thin, breathable plastic wrap that helps products stay in place.
What does PEG-10 Nonafluorohexyl Dimethicone Copolymer do in a beauty product?
When applied, the molecules align to form a thin, flexible film on the skin. This film resists water and sweat, helps other ingredients stay put, and gives a smooth, non-tacky feel. The PEG part also helps it mix well with other ingredients.
Is PEG-10 Nonafluorohexyl Dimethicone Copolymer safe for most people?
Generally considered safe for topical use in cosmetics at typical concentrations. Low irritation and comedogenic risk. However, long-term environmental persistence is a concern, and those with very sensitive skin may want to patch-test due to the PEG component.
Who should be careful with PEG-10 Nonafluorohexyl Dimethicone Copolymer?
Individuals who strictly avoid silicones or synthetic polymers in their skincare
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.