Ingredient review
PEG/PPG-30/10 Maleimide/Styrene Copolymer
INCI: PEG/PPG-30/10 MALEIMIDE/STYRENE COPOLYMER
A synthetic polymer that helps products stay put longer, especially in water-resistant sunscreens and long-wear makeup.
In plain English
This ingredient is a man-made polymer that forms a thin, flexible film on your skin. Think of it like a clear, invisible shield that helps other ingredients (like sunscreen or makeup) stay in place longer, even when you sweat or go swimming. It's commonly used in water-resistant sunscreens and long-wear foundations.
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/PPG-30/10 Maleimide/Styrene 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/PPG-30/10 Maleimide/Styrene 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 from maleimide and styrene units, modified with PEG and PPG chains to make it water-dispersible and skin-friendly.
How it works
When applied, the polymer chains spread across the skin and link together to form a continuous, flexible film. This film physically locks in other ingredients, reducing their transfer, smudging, or wash-off by water or sweat.
Pros
Boosts water resistance
Helps sunscreens and makeup stay effective even when you swim or sweat, so you don't have to reapply as often.
Improves wear time
Creates a flexible film that keeps makeup from smudging or fading throughout the day.
Cons and cautions
Synthetic origin
Made from petrochemicals, which may be a concern for those seeking natural or 'clean' beauty products.
Potential tightness
The film can feel slightly tight or dry on very sensitive or dehydrated skin, though this is rare.
Best for
- People who need long-lasting, water-resistant sun protection
- Anyone who wants makeup that stays put through sweat or humidity
Use caution if
- Those who prefer exclusively natural or plant-based ingredients
Usage tips
Safety summary
Generally recognized as safe for topical use. Low irritation and comedogenic risk. No significant safety concerns reported in cosmetic use.
Research notes
Limited peer-reviewed studies specifically on this polymer, but similar film-forming copolymers have a long history of safe use in cosmetics. Safety is supported by industry self-regulation and regulatory approvals.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics globally, including by the FDA and EU CosIng database, with no known restrictions at typical concentrations.
- Common uses
- Sunscreens, Long-wear makeup, Water-resistant formulas
- Environmental note
- As a synthetic polymer, it may not be biodegradable. However, it is used in low concentrations and is not known to accumulate in the environment.
Good to know
- This polymer is often used in combination with other film-formers for extra durability.
- It is considered safe by major regulatory bodies at typical use levels.
Common questions
What is PEG/PPG-30/10 Maleimide/Styrene Copolymer in beauty products?
This ingredient is a man-made polymer that forms a thin, flexible film on your skin. Think of it like a clear, invisible shield that helps other ingredients (like sunscreen or makeup) stay in place longer, even when you sweat or go swimming. It's commonly used in water-resistant sunscreens and long-wear foundations.
What does PEG/PPG-30/10 Maleimide/Styrene Copolymer do in a beauty product?
When applied, the polymer chains spread across the skin and link together to form a continuous, flexible film. This film physically locks in other ingredients, reducing their transfer, smudging, or wash-off by water or sweat.
Is PEG/PPG-30/10 Maleimide/Styrene Copolymer safe for most people?
Generally recognized as safe for topical use. Low irritation and comedogenic risk. No significant safety concerns reported in cosmetic use.
Who should be careful with PEG/PPG-30/10 Maleimide/Styrene Copolymer?
Those who prefer exclusively natural or plant-based ingredients
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.