Ingredient review

Bis-Dicaprolactone Ethoxyacrylate IPDI

INCI: BIS-DICAPROLACTONE ETHOXYACRYLATE IPDI

A synthetic film-former that helps makeup and skincare stay put longer, but offers no active skin benefits.

beautyskincarefilm-former

In plain English

This ingredient is a type of plastic-like polymer that creates a flexible, invisible film on your skin. It's added to products like foundation or sunscreen so they don't smudge, run, or wear off easily. Think of it like a clear, breathable raincoat for your makeup.

Review score

Safety, usefulness, and evidence

3.5Good
3.5/ 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-Dicaprolactone Ethoxyacrylate IPDI 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-Dicaprolactone Ethoxyacrylate IPDI.
  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 polymer created by reacting caprolactone, ethoxyacrylate, and isophorone diisocyanate (IPDI). It is designed to form a flexible, water-resistant film on the skin or hair.

How it works

When applied, the polymer chains spread out and then link together as the solvent evaporates, forming a continuous, flexible film. This film physically locks in pigments and other ingredients, resisting water, sweat, and friction.

Pros

Boosts wear time

Helps makeup and sunscreen stay intact for hours, reducing the need for touch-ups.

Water-resistant

Creates a barrier that resists sweat and moisture, ideal for active lifestyles or humid weather.

Cons and cautions

No active benefit

This ingredient only forms a film; it does not hydrate, soothe, or treat the skin.

Potential tightness

On very dry or sensitive skin, the film can feel slightly tight or uncomfortable after extended wear.

Best for

  • Anyone wanting long-lasting, transfer-proof makeup
  • People who live in humid climates or have oily skin

Use caution if

  • Those with very dry or dehydrated skin who prefer a dewy, hydrating finish

Usage tips

Apply over a well-hydrated base to minimize any tight feeling from the film.
Use an oil-based cleanser or micellar water to thoroughly remove products containing this polymer at the end of the day.

Safety summary

Considered safe for topical use in cosmetics at typical concentrations. Rare reports of mild irritation exist, but overall it has a low irritation and comedogenic profile.

Research notes

Safety data is primarily based on analog studies of similar film-forming polymers. No long-term human studies on this specific ingredient are publicly available, but it is widely used and accepted by regulatory bodies.

Common label clues

Typical concentration
1–10% in leave-on formulas
Regulatory status
Approved for use in cosmetics globally, including by the EU CosIng database and the US FDA, with no known restrictions at typical use levels.
Common uses
Long-wear foundations, Waterproof mascaras, Lip products, 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 an ingredient list because it's used in low concentrations.
  • It is not known to clog pores, making it suitable for acne-prone skin in most cases.

Common questions

What is Bis-Dicaprolactone Ethoxyacrylate IPDI in beauty products?

This ingredient is a type of plastic-like polymer that creates a flexible, invisible film on your skin. It's added to products like foundation or sunscreen so they don't smudge, run, or wear off easily. Think of it like a clear, breathable raincoat for your makeup.

What does Bis-Dicaprolactone Ethoxyacrylate IPDI do in a beauty product?

When applied, the polymer chains spread out and then link together as the solvent evaporates, forming a continuous, flexible film. This film physically locks in pigments and other ingredients, resisting water, sweat, and friction.

Is Bis-Dicaprolactone Ethoxyacrylate IPDI safe for most people?

Considered safe for topical use in cosmetics at typical concentrations. Rare reports of mild irritation exist, but overall it has a low irritation and comedogenic profile.

Who should be careful with Bis-Dicaprolactone Ethoxyacrylate IPDI?

Those with very dry or dehydrated skin who prefer a dewy, hydrating finish

Research sources

CosIng - European CommissionOpenPubChem - Caprolactone derivativesOpenPersonal Care Council - Safety AssessmentOpen

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.