Ingredient review
Bis-HEMA IPDI/PPG-12 Copolymer
INCI: BIS-HEMA IPDI/PPG-12 COPOLYMER
A synthetic film-former that helps makeup and nail products stay put without feeling heavy or sticky.
In plain English
This ingredient is a synthetic polymer that forms a thin, flexible film on skin or nails. Think of it like a clear, invisible wrap that helps makeup resist smudging, water, and sweat. It's commonly found in long-wear foundations, lip stains, and nail polishes. Because it's a large molecule, it sits on the surface and doesn't penetrate deeply, making it generally safe for most skin types.
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
Bis-HEMA IPDI/PPG-12 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 Bis-HEMA IPDI/PPG-12 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 bis-HEMA (a methacrylate) and IPDI (isophorone diisocyanate) combined with PPG-12 (a polypropylene glycol chain). It belongs to the family of polyurethane film-formers used in cosmetics.
How it works
When applied, the copolymer molecules link together as the solvent evaporates, forming a continuous, flexible film. This film adheres to the skin or nail surface, creating a barrier that locks in pigments and resists water, oil, and friction. The PPG-12 component adds flexibility, so the film moves with the skin without cracking.
Pros
Long-lasting wear
Helps makeup and nail polish resist smudging, fading, and transferring throughout the day.
Flexible finish
Unlike some stiff film-formers, this copolymer moves with your skin, reducing the chance of cracking or flaking.
Cons and cautions
Synthetic origin
Made from petrochemical derivatives, which may be a concern for those seeking fully natural or biodegradable products.
Potential tightness
On very dry or sensitive skin, the film can feel slightly tight or drying, especially if layered heavily.
Best for
- Anyone wanting long-wear foundation or lip color
- People with oily skin who need extra staying power
Use caution if
- Those with very dry or compromised skin barriers who prefer breathable formulas
- Individuals sensitive to synthetic polymers (rare)
Usage tips
Safety summary
Considered safe for cosmetic use at typical concentrations. The Cosmetic Ingredient Review (CIR) panel has evaluated similar methacrylate copolymers and found them safe when formulated properly. No significant irritation or sensitization has been reported in patch tests.
Research notes
Limited peer-reviewed studies specifically on this copolymer, but the class of polyurethane film-formers is well-documented for safety and efficacy in cosmetics. Most data come from manufacturer safety assessments and regulatory reviews.
Common label clues
- Typical concentration
- 1–10% in leave-on products; up to 20% in nail coatings
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. No specific restrictions at typical use levels.
- Common uses
- Long-wear foundations, Lip products, Nail polishes, Water-resistant sunscreens
- Environmental note
- As a synthetic polymer, it is not biodegradable. However, it is used in small amounts and is not known to bioaccumulate significantly.
Good to know
- This ingredient is often listed near the end of ingredient lists because it's used at low concentrations.
- It is not absorbed into the skin; it stays on the surface as a protective film.
Common questions
What is Bis-HEMA IPDI/PPG-12 Copolymer in beauty products?
This ingredient is a synthetic polymer that forms a thin, flexible film on skin or nails. Think of it like a clear, invisible wrap that helps makeup resist smudging, water, and sweat. It's commonly found in long-wear foundations, lip stains, and nail polishes. Because it's a large molecule, it sits on the surface and doesn't penetrate deeply, making it generally safe for most skin types.
What does Bis-HEMA IPDI/PPG-12 Copolymer do in a beauty product?
When applied, the copolymer molecules link together as the solvent evaporates, forming a continuous, flexible film. This film adheres to the skin or nail surface, creating a barrier that locks in pigments and resists water, oil, and friction. The PPG-12 component adds flexibility, so the film moves with the skin without cracking.
Is Bis-HEMA IPDI/PPG-12 Copolymer safe for most people?
Considered safe for cosmetic use at typical concentrations. The Cosmetic Ingredient Review (CIR) panel has evaluated similar methacrylate copolymers and found them safe when formulated properly. No significant irritation or sensitization has been reported in patch tests.
Who should be careful with Bis-HEMA IPDI/PPG-12 Copolymer?
Those with very dry or compromised skin barriers who prefer breathable formulas Individuals sensitive to synthetic polymers (rare)
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.