Ingredient review

PEG/PPG-26/31 Copolymer

INCI: PEG/PPG-26/31 Copolymer

A safe, gentle synthetic polymer that helps products feel smooth and spread evenly without clogging pores.

beautyskincarefilm former

In plain English

PEG/PPG-26/31 Copolymer is a man-made ingredient that helps your skincare products feel silky and spread easily. It also holds a bit of moisture on your skin, making it feel less dry. Think of it as a helper that makes the texture of your lotion or serum nicer to use.

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/PPG-26/31 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/PPG-26/31 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 ethylene oxide and propylene oxide, designed to be water-soluble and non-greasy.

How it works

It forms a thin, flexible film on the skin that helps other ingredients stay put and prevents water loss. It also reduces the friction between the product and your skin, giving a smooth, gliding feel.

Pros

Gentle on skin

Rated low for irritation and comedogenicity, making it suitable for sensitive and acne-prone skin types.

Improves product feel

Creates a silky, smooth texture that helps serums and moisturizers glide on without stickiness.

Cons and cautions

Synthetic origin

Derived from petrochemicals, which may be a concern for those seeking natural or organic skincare.

Limited active benefit

Primarily a texture and film-forming agent, not a potent moisturizer or active ingredient on its own.

Best for

  • Anyone looking for a lightweight, non-greasy moisturizing feel
  • People with sensitive skin who want a gentle texture enhancer

Use caution if

  • Those who strictly avoid synthetic ingredients

Usage tips

Use products containing this ingredient as directed; it works well in both water-based and oil-based formulations.
Layer with a richer moisturizer if you need more hydration, as this copolymer provides only light moisture.

Safety summary

PEG/PPG-26/31 Copolymer is considered safe for topical use with low irritation and comedogenic risk. No significant safety concerns have been reported in cosmetic applications.

Research notes

Research on this specific copolymer is limited, but PEG/PPG copolymers as a class have been reviewed by the Cosmetic Ingredient Review (CIR) panel and deemed safe for use in cosmetics.

Common label clues

Typical concentration
0.5% to 5%
Regulatory status
Approved for use in cosmetics by the FDA and EU CosIng database. Generally recognized as safe at typical concentrations.
Common uses
Serums, Moisturizers, Sunscreens, Hair products
Environmental note
As a synthetic polymer, it is not biodegradable and may accumulate in the environment, though it is used in small amounts.

Good to know

  • PEG/PPG copolymers are common in cosmetics and considered safe by major regulatory bodies.
  • The numbers 26 and 31 refer to the length of the polymer chains, which affect its solubility and feel.

Common questions

What is PEG/PPG-26/31 Copolymer in beauty products?

PEG/PPG-26/31 Copolymer is a man-made ingredient that helps your skincare products feel silky and spread easily. It also holds a bit of moisture on your skin, making it feel less dry. Think of it as a helper that makes the texture of your lotion or serum nicer to use.

What does PEG/PPG-26/31 Copolymer do in a beauty product?

It forms a thin, flexible film on the skin that helps other ingredients stay put and prevents water loss. It also reduces the friction between the product and your skin, giving a smooth, gliding feel.

Is PEG/PPG-26/31 Copolymer safe for most people?

PEG/PPG-26/31 Copolymer is considered safe for topical use with low irritation and comedogenic risk. No significant safety concerns have been reported in cosmetic applications.

Who should be careful with PEG/PPG-26/31 Copolymer?

Those who strictly avoid synthetic ingredients

Research sources

Cosmetic Ingredient Review (CIR) - Safety Assessment of PEG/PPG CopolymersOpenEU CosIng Database - PEG/PPG-26/31 CopolymerOpenPubMed - Safety of PEG/PPG Copolymers 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.