Ingredient review
Perfluorononyl Dimethicone/Methicone/Amodimethicone Crosspolymer
INCI: PERFLUORONONYL DIMETHICONE/METHICONE/AMODIMETHICONE CROSSPOLYMER
A high-tech 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 thin, flexible film on your skin or hair. Think of it like a very lightweight, invisible raincoat — it helps makeup last longer, keeps sunscreen from washing off, and can make hair feel smoother. It's designed to be breathable, so it doesn't trap everything underneath, 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
Perfluorononyl Dimethicone/Methicone/Amodimethicone 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 Perfluorononyl Dimethicone/Methicone/Amodimethicone 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 perfluorononyl (a fluorinated chain) with dimethicone, methicone, and amodimethicone. The crosslinking creates a network that forms a durable, water-resistant film.
How it works
When applied, the polymer spreads into a thin, even layer that dries to form a flexible film. This film physically blocks water and sweat from reaching the product underneath, while also helping pigments and active ingredients stay in place. The fluorinated part adds extra water repellency.
Pros
Excellent water resistance
Helps sunscreen and makeup stay effective even when you sweat or swim, so you don't have to reapply as often.
Long-lasting wear
Creates a flexible film that keeps foundation and lip color in place for hours without cracking or fading.
Cons and cautions
Can feel heavy on oily skin
The film-forming nature may add a slick or greasy sensation that some people with oily skin find uncomfortable.
Requires double cleansing
Because it's water-resistant, you'll need an oil-based cleanser or micellar water to remove it completely, which adds a step to your routine.
Best for
- People who need long-wearing, water-resistant makeup or sunscreen
- Those with normal to dry skin looking for a smooth, protective finish
Use caution if
- Individuals with very oily or acne-prone skin who prefer lightweight, non-film-forming products
Usage tips
Safety summary
Generally recognized as safe for topical use in cosmetics at typical concentrations. Low irritation and comedogenic risk. However, its environmental persistence is a concern, and some individuals may find it too occlusive for their skin type.
Research notes
Limited peer-reviewed studies specifically on this polymer, but silicone and fluorinated film-formers are well-documented for their water resistance and film-forming properties. Safety assessments by cosmetic ingredient review panels have found them safe for use.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics in the US (FDA), EU, and other major markets. No specific restrictions beyond general cosmetic safety requirements.
- Common uses
- Sunscreens, Long-wear foundations, Water-resistant lip products, Hair styling products
- Environmental note
- Perfluorinated compounds are known to be persistent in the environment. While this specific polymer is large and not easily absorbed, its production and disposal contribute to environmental concerns.
Good to know
- This ingredient is often found in 'transfer-proof' or '24-hour wear' makeup products.
- It is considered safe for use in cosmetics by major regulatory bodies, but its environmental persistence is a concern.
Common questions
What is Perfluorononyl Dimethicone/Methicone/Amodimethicone Crosspolymer in beauty products?
This is a synthetic silicone ingredient that forms a thin, flexible film on your skin or hair. Think of it like a very lightweight, invisible raincoat — it helps makeup last longer, keeps sunscreen from washing off, and can make hair feel smoother. It's designed to be breathable, so it doesn't trap everything underneath, but it can feel a bit slick or heavy if you have very oily skin.
What does Perfluorononyl Dimethicone/Methicone/Amodimethicone Crosspolymer do in a beauty product?
When applied, the polymer spreads into a thin, even layer that dries to form a flexible film. This film physically blocks water and sweat from reaching the product underneath, while also helping pigments and active ingredients stay in place. The fluorinated part adds extra water repellency.
Is Perfluorononyl Dimethicone/Methicone/Amodimethicone Crosspolymer safe for most people?
Generally recognized as safe for topical use in cosmetics at typical concentrations. Low irritation and comedogenic risk. However, its environmental persistence is a concern, and some individuals may find it too occlusive for their skin type.
Who should be careful with Perfluorononyl Dimethicone/Methicone/Amodimethicone Crosspolymer?
Individuals with very oily or acne-prone skin who prefer lightweight, non-film-forming products
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.