Ingredient review

PEG-114 Polycaprolactone Copolymer

INCI: BIS-METHOXY PEG-114 POLYCAPROLACTONE DIOL/IPDI COPOLYMER

A synthetic film-former that helps makeup and skincare last longer and feel smoother, with a low risk of irritation.

beautyskincarefilm-former

In plain English

This is a man-made polymer that creates a thin, flexible film on your skin. It helps makeup stay put longer, makes products feel silky, and can add water resistance. Think of it like a clear, breathable shield that holds everything together without feeling heavy or sticky.

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

PEG-114 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 PEG-114 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 made from polyethylene glycol (PEG), polycaprolactone diol, and isophorone diisocyanate (IPDI). It is designed to form a flexible, durable film on the skin or hair.

How it works

When applied, the polymer chains spread out and link together as the solvent evaporates, forming a continuous film. This film adheres to the skin, locking in pigments and other ingredients, and resists smudging, water, and sweat.

Pros

Long-lasting wear

Helps makeup stay in place for hours without fading or smudging, even in humid conditions.

Smooth texture

Creates a silky, even finish on the skin, making products feel lightweight and comfortable.

Cons and cautions

Synthetic origin

Made from petrochemicals, which may be a concern for those seeking natural or eco-friendly formulations.

Potential tightness

In high concentrations, the film can feel slightly tight or drying on very dry or sensitive skin.

Best for

  • People who want long-lasting makeup
  • Those with oily or combination skin who need extra staying power

Use caution if

  • Individuals with very dry or compromised skin barriers who may find film-formers uncomfortable

Usage tips

Use in combination with hydrating ingredients like glycerin or hyaluronic acid to offset any potential dryness.
Apply makeup over a well-moisturized base to ensure the film forms evenly without clinging to dry patches.

Safety summary

Generally recognized as safe for topical use in cosmetics. Low irritation and comedogenic potential. Avoid contact with eyes.

Research notes

Limited independent studies on this specific copolymer, but related film-forming polymers have a long history of safe use. Safety is supported by industry data and regulatory approvals.

Common label clues

Typical concentration
0.5% to 5%
Regulatory status
Approved for use in cosmetics in the EU, US, and other major markets. No known restrictions at typical usage 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 accumulate in the environment.

Good to know

  • This ingredient is often used in 'transfer-proof' and 'waterproof' makeup products.
  • It is considered safe for use in cosmetics by major regulatory bodies at typical concentrations.

Common questions

What is PEG-114 Polycaprolactone Copolymer in beauty products?

This is a man-made polymer that creates a thin, flexible film on your skin. It helps makeup stay put longer, makes products feel silky, and can add water resistance. Think of it like a clear, breathable shield that holds everything together without feeling heavy or sticky.

What does PEG-114 Polycaprolactone Copolymer do in a beauty product?

When applied, the polymer chains spread out and link together as the solvent evaporates, forming a continuous film. This film adheres to the skin, locking in pigments and other ingredients, and resists smudging, water, and sweat.

Is PEG-114 Polycaprolactone Copolymer safe for most people?

Generally recognized as safe for topical use in cosmetics. Low irritation and comedogenic potential. Avoid contact with eyes.

Who should be careful with PEG-114 Polycaprolactone Copolymer?

Individuals with very dry or compromised skin barriers who may find film-formers uncomfortable

Research sources

Cosmetic Ingredient Review (CIR) - Safety of Film-Forming PolymersOpenEuropean Chemicals Agency (ECHA) - Substance InformationOpenPubMed - Polycaprolactone in Biomedical ApplicationsOpen

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.