Ingredient review

Polyglycol Adipate/Dimethicone Copolymer

INCI: POLY(GLYCOL ADIPATE)/BIS-HYDROXYETHOXYPROPYL DIMETHICONE COPOLYMER

A synthetic silicone polymer that helps products stay put and resist water, but may feel heavy on some skin types.

beautyskincarefilm-former

In plain English

This is a man-made ingredient that combines a plastic-like polymer with silicone. When applied to skin, it dries down to form a flexible, invisible film that helps makeup and sunscreen stay in place longer and resist water and sweat. Think of it like a gentle, breathable glue for your cosmetics.

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

Polyglycol Adipate/Dimethicone 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 Polyglycol Adipate/Dimethicone 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 by reacting glycol adipate (a polyester) with a silicone compound. It is a film-forming agent that creates a flexible, water-resistant layer on the skin or hair.

How it works

When the product is applied, the solvent (usually water or alcohol) evaporates, leaving behind a thin, flexible film of the copolymer. This film adheres to the skin, locking in pigments and active ingredients, and providing a barrier against moisture and friction.

Pros

Long-lasting wear

Helps makeup and sunscreen stay put for hours, even in humid or wet conditions.

Water resistance

Forms a barrier that repels water and sweat, making it ideal for outdoor activities or swimming.

Cons and cautions

Can feel heavy

On oily or combination skin, the film may feel sticky or greasy, especially in high humidity.

Requires double cleansing

Because it forms a water-resistant film, you may need an oil-based cleanser or micellar water to remove it completely.

Best for

  • People who want long-lasting makeup or sunscreen
  • Those who need water-resistant protection for swimming or sweating

Use caution if

  • Individuals with very oily or acne-prone skin who prefer lightweight textures
  • Those who avoid silicones for personal reasons

Usage tips

Apply to clean, dry skin for best film formation.
Use an oil-based cleanser or micellar water to remove products containing this ingredient.
Layer with lightweight moisturizers if you have oily skin to avoid a heavy feel.

Safety summary

Generally recognized as safe for topical use. Low irritation and comedogenic risk. No significant safety concerns reported in cosmetic concentrations.

Research notes

Limited independent research specific to this copolymer, but film-forming silicones as a class have a long history of safe use in cosmetics. No known toxicity or sensitization issues.

Common label clues

Typical concentration
1% to 10%
Regulatory status
Approved for use in cosmetics in the US, EU, and other major markets. No known restrictions at typical concentrations.
Common uses
Sunscreens, Long-wear foundations, Waterproof mascaras, Lip products
Environmental note
As a synthetic silicone-based polymer, it is not biodegradable and may persist in the environment. Some brands are moving toward more eco-friendly alternatives.

Good to know

  • This ingredient is often used in combination with other silicones to improve spreadability.
  • It is considered safe for use in cosmetics by major regulatory bodies.

Common questions

What is Polyglycol Adipate/Dimethicone Copolymer in beauty products?

This is a man-made ingredient that combines a plastic-like polymer with silicone. When applied to skin, it dries down to form a flexible, invisible film that helps makeup and sunscreen stay in place longer and resist water and sweat. Think of it like a gentle, breathable glue for your cosmetics.

What does Polyglycol Adipate/Dimethicone Copolymer do in a beauty product?

When the product is applied, the solvent (usually water or alcohol) evaporates, leaving behind a thin, flexible film of the copolymer. This film adheres to the skin, locking in pigments and active ingredients, and providing a barrier against moisture and friction.

Is Polyglycol Adipate/Dimethicone Copolymer safe for most people?

Generally recognized as safe for topical use. Low irritation and comedogenic risk. No significant safety concerns reported in cosmetic concentrations.

Who should be careful with Polyglycol Adipate/Dimethicone Copolymer?

Individuals with very oily or acne-prone skin who prefer lightweight textures Those who avoid silicones for personal reasons

Research sources

Cosmetic Ingredient Review (CIR) - Safety of Film-Forming PolymersOpenPubChem - Polyglycol AdipateOpenEuropean Chemicals Agency (ECHA) - Silicone PolymersOpen

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.