Ingredient review

Bis-PEG-10 Dimethicone/Dimer Dilinoleate Copolymer

INCI: BIS-PEG-10 DIMETHICONE/DIMER DILINOLEATE COPOLYMER

A silicone copolymer that helps products spread smoothly, feel silky, and stay put longer without clogging pores.

beautyskincarefilm former

In plain English

This ingredient is a type of silicone that forms a thin, flexible film on your skin. It helps makeup and skincare products glide on easily, feel lightweight and silky, and resist water or sweat. It also helps other ingredients spread evenly and stay in place. Think of it as a gentle, invisible shield that improves how a product feels and lasts.

Review score

Safety, usefulness, and evidence

4.0Good
4.0/ 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
semi synthetic
Evidence
moderate
Irritation
low
Clogging risk
low
How reviews are scored

Quick decision guide

Useful, but context matters

Bis-PEG-10 Dimethicone/Dimer Dilinoleate 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-PEG-10 Dimethicone/Dimer Dilinoleate 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 semi-synthetic polymer made by combining silicone (dimethicone) with a fatty acid derivative (dimer dilinoleate) and polyethylene glycol (PEG). It is a clear, viscous liquid used in cosmetics as a film former and texture enhancer.

How it works

When applied, the copolymer dries down to form a thin, breathable film on the skin. This film helps lock in other ingredients, reduces water loss, and provides a smooth, silky feel. It also helps pigments and active ingredients spread evenly and stay in place longer, improving wear time and water resistance.

Pros

Long-lasting wear

Forms a flexible film that helps makeup and sunscreen resist water, sweat, and smudging, so you need fewer touch-ups.

Silky texture

Gives products a smooth, velvety feel that glides on easily and reduces drag or pilling.

Cons and cautions

Potential heaviness

At high concentrations, some people find it feels slightly tacky or heavy, especially on oily or acne-prone skin.

PEG concerns

The PEG component may be contaminated with ethylene oxide or 1,4-dioxane if not properly purified, though reputable brands ensure safety.

Best for

  • People who want long-wearing makeup or water-resistant sunscreen
  • Those with normal to dry skin who enjoy a silky, smooth finish

Use caution if

  • Individuals with known sensitivity to silicones or PEG compounds
  • Those who prefer completely silicone-free or minimal-ingredient routines

Usage tips

Layer water-based products first, then apply silicone-containing products to avoid pilling.
If you have oily skin, use products with this ingredient sparingly or only on areas that need extra wear time.

Safety summary

Generally considered safe for most skin types at typical cosmetic concentrations. The main concern is potential contamination of PEG components, but reputable manufacturers follow strict purification processes. Patch test if you have sensitive skin or a history of reactions to silicones.

Research notes

The Cosmetic Ingredient Review (CIR) panel has reviewed similar silicone copolymers and found them safe for cosmetic use. There are no major published studies specifically on this exact copolymer, but its components are well-studied and considered low-risk.

Common label clues

Typical concentration
1% to 10%
Regulatory status
Approved for use in cosmetics in the US, EU, and other major markets. The Cosmetic Ingredient Review (CIR) panel has deemed it safe as used in rinse-off and leave-on products.
Common uses
Foundations, Sunscreens, Long-wear makeup, Lip products, Moisturizers
Environmental note
Silicone-based polymers can be slow to biodegrade. Some manufacturers are developing more eco-friendly alternatives, but this ingredient is still widely used for its performance.

Good to know

  • This ingredient is often used in 'transfer-proof' or 'long-wear' makeup formulas.
  • It is considered safe by the Cosmetic Ingredient Review (CIR) panel at typical use levels.

Common questions

What is Bis-PEG-10 Dimethicone/Dimer Dilinoleate Copolymer in beauty products?

This ingredient is a type of silicone that forms a thin, flexible film on your skin. It helps makeup and skincare products glide on easily, feel lightweight and silky, and resist water or sweat. It also helps other ingredients spread evenly and stay in place. Think of it as a gentle, invisible shield that improves how a product feels and lasts.

What does Bis-PEG-10 Dimethicone/Dimer Dilinoleate Copolymer do in a beauty product?

When applied, the copolymer dries down to form a thin, breathable film on the skin. This film helps lock in other ingredients, reduces water loss, and provides a smooth, silky feel. It also helps pigments and active ingredients spread evenly and stay in place longer, improving wear time and water resistance.

Is Bis-PEG-10 Dimethicone/Dimer Dilinoleate Copolymer safe for most people?

Generally considered safe for most skin types at typical cosmetic concentrations. The main concern is potential contamination of PEG components, but reputable manufacturers follow strict purification processes. Patch test if you have sensitive skin or a history of reactions to silicones.

Who should be careful with Bis-PEG-10 Dimethicone/Dimer Dilinoleate Copolymer?

Individuals with known sensitivity to silicones or PEG compounds Those who prefer completely silicone-free or minimal-ingredient routines

Research sources

Cosmetic Ingredient Review (CIR) - Safety Assessment of Dimethicone and Related PolymersOpenPubChem - Bis-PEG-10 Dimethicone/Dimer Dilinoleate CopolymerOpenEuropean Chemicals Agency (ECHA) - Substance InformationOpen

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.