Ingredient review
Polycaprolactone Polyurethane Copolymer
INCI: BIS-HEA POLYCAPROLACTONE DIOL/IPDI COPOLYMER
A synthetic film-former that helps makeup and sunscreen stay put without feeling heavy or sticky.
In plain English
This ingredient is a type of plastic-like polymer that dries down to form a flexible, invisible film on your skin or hair. It's used to make products last longer, resist water and sweat, and feel more comfortable than older film-formers. Think of it as a gentle, breathable glue that holds your makeup or sunscreen 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
Polycaprolactone Polyurethane 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 Polycaprolactone Polyurethane 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 polycaprolactone diol and isophorone diisocyanate (IPDI). It belongs to the polyurethane family and is designed specifically for cosmetic use as a film-forming agent.
How it works
When applied, the solvent or water evaporates, leaving behind a thin, flexible film that adheres to the skin or hair. This film helps other ingredients (like pigments or UV filters) stay in place, reduces transfer, and improves water resistance. Its flexibility prevents cracking or flaking.
Pros
Long-lasting wear
Helps makeup and sunscreen stay put for hours without smudging or fading, even in humidity.
Comfortable feel
Unlike older film-formers, this polymer creates a flexible film that moves with your skin, reducing tightness or cracking.
Cons and cautions
Synthetic origin
Made from petrochemical-derived materials, which may be a concern for those seeking natural or 'clean' formulations.
Limited safety data
While generally considered safe, there are fewer long-term studies on this specific polymer compared to more common film-formers.
Best for
- Anyone wanting long-wear foundation or sunscreen
- People with oily skin who need transfer-resistant products
Use caution if
- Those strictly avoiding all synthetic ingredients
- Individuals with known sensitivity to polyurethanes (rare)
Usage tips
Safety summary
Considered safe for topical cosmetic use at typical concentrations. Low irritation and comedogenic potential. No significant safety concerns reported in regulatory reviews.
Research notes
Limited peer-reviewed studies specifically on this copolymer, but polyurethane film-formers in general have a good safety profile. Most data comes from manufacturer safety assessments and regulatory submissions.
Common label clues
- Typical concentration
- 1–10%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. Not classified as a hazardous substance under GHS.
- Common uses
- Long-wear makeup, Sunscreen, Hair styling products
- Environmental note
- As a synthetic polymer, it is not biodegradable. However, it is used in low concentrations and is not known to bioaccumulate.
Good to know
- Often found in '24-hour' or 'waterproof' makeup formulas.
- Can be combined with silicones for a smoother feel.
Common questions
What is Polycaprolactone Polyurethane Copolymer in beauty products?
This ingredient is a type of plastic-like polymer that dries down to form a flexible, invisible film on your skin or hair. It's used to make products last longer, resist water and sweat, and feel more comfortable than older film-formers. Think of it as a gentle, breathable glue that holds your makeup or sunscreen in place.
What does Polycaprolactone Polyurethane Copolymer do in a beauty product?
When applied, the solvent or water evaporates, leaving behind a thin, flexible film that adheres to the skin or hair. This film helps other ingredients (like pigments or UV filters) stay in place, reduces transfer, and improves water resistance. Its flexibility prevents cracking or flaking.
Is Polycaprolactone Polyurethane Copolymer safe for most people?
Considered safe for topical cosmetic use at typical concentrations. Low irritation and comedogenic potential. No significant safety concerns reported in regulatory reviews.
Who should be careful with Polycaprolactone Polyurethane Copolymer?
Those strictly avoiding all synthetic ingredients Individuals with known sensitivity to polyurethanes (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.