Ingredient review

Bis-HEMA Polycaprolactone Copolymer

INCI: BIS-HEMA POLY(CAPROLACTONE NEOPENTYL GLYCOL)/IPDI COPOLYMER

A synthetic film-former that helps makeup and skincare stay put, resist water, and feel flexible on skin.

beautyskincarefilm-former

In plain English

This is a man-made polymer that forms a thin, flexible film on your skin. Think of it like a clear, breathable raincoat for your makeup or skincare — it helps products stay in place, resist sweat and water, and feel comfortable rather than stiff or tight.

Review score

Safety, usefulness, and evidence

3.8Good
3.8/ 5

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
How reviews are scored

Quick decision guide

Useful, but context matters

Bis-HEMA Polycaprolactone 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.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Bis-HEMA Polycaprolactone Copolymer.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. 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

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

moderate

There is useful support, but formula details and claim strength still matter.

What it is

A synthetic copolymer created by combining caprolactone, neopentyl glycol, and isophorone diisocyanate (IPDI) with HEMA (hydroxyethyl methacrylate). It is designed to form a durable yet flexible film on the skin or hair.

How it works

When applied, the polymer chains spread evenly and then link together as the solvent evaporates, creating a continuous, invisible film. This film physically locks in pigments and active ingredients, reduces transfer, and improves water resistance without clogging pores or feeling heavy.

Pros

Long-lasting wear

Helps makeup and skincare stay put for hours, reducing the need for touch-ups.

Flexible feel

Unlike some stiff films, this polymer stays flexible so skin feels natural and comfortable.

Cons and cautions

Removal requires effort

Because it's water-resistant, you'll need an oil-based cleanser or micellar water to fully remove it, which may be an extra step.

Potential tightness on dry skin

If you have very dry or dehydrated skin, the film might feel slightly tight or uncomfortable.

Best for

  • Anyone wanting long-lasting makeup or water-resistant skincare
  • People with oily or combination skin who struggle with makeup fading

Use caution if

  • Those who prefer minimal, single-step cleansing routines

Usage tips

Use a double-cleansing method (oil cleanser followed by water-based cleanser) to ensure complete removal.
Layer over moisturizer to minimize any tight feeling on dry skin.
Shake well before use if in a spray or liquid product to ensure even distribution.

Safety summary

Bis-HEMA Polycaprolactone Copolymer is considered safe for topical cosmetic use. It has low irritation and comedogenic potential. As with any film-former, proper removal is recommended to avoid buildup.

Research notes

Safety assessments for similar polyurethane and acrylate copolymers support their use in cosmetics. Specific studies on this exact polymer are limited, but its chemical class is well-established as safe at typical use levels.

Common label clues

Typical concentration
1–10% in leave-on products
Regulatory status
Approved for use in cosmetics in the EU, US, and other major markets. No known restrictions at typical concentrations.
Common uses
Long-wear foundations, Waterproof mascara, Lip products, Sunscreen, Setting sprays
Environmental note
As a synthetic polymer, it is not biodegradable. However, it is used in small amounts and is not known to bioaccumulate.

Good to know

  • This polymer is often used in 'transfer-proof' and 'waterproof' formulas.
  • It is considered safe for use in cosmetics by major regulatory bodies when used as intended.

Common questions

What is Bis-HEMA Polycaprolactone Copolymer in beauty products?

This is a man-made polymer that forms a thin, flexible film on your skin. Think of it like a clear, breathable raincoat for your makeup or skincare — it helps products stay in place, resist sweat and water, and feel comfortable rather than stiff or tight.

What does Bis-HEMA Polycaprolactone Copolymer do in a beauty product?

When applied, the polymer chains spread evenly and then link together as the solvent evaporates, creating a continuous, invisible film. This film physically locks in pigments and active ingredients, reduces transfer, and improves water resistance without clogging pores or feeling heavy.

Is Bis-HEMA Polycaprolactone Copolymer safe for most people?

Bis-HEMA Polycaprolactone Copolymer is considered safe for topical cosmetic use. It has low irritation and comedogenic potential. As with any film-former, proper removal is recommended to avoid buildup.

Who should be careful with Bis-HEMA Polycaprolactone Copolymer?

Those who prefer minimal, single-step cleansing routines

Research sources

Cosmetic Ingredient Review (CIR) - Polyurethane PolymersOpenEuropean Chemicals Agency (ECHA) - Polymer InformationOpenPubMed - Safety of Film-Forming Polymers in CosmeticsOpen

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.