Ingredient review

PEG-15/Laureth Dimethicone Crosspolymer

INCI: PEG-15/LAURYL DIMETHICONE CROSSPOLYMER

A gentle silicone emulsifier that improves product feel and stability without clogging pores or causing irritation.

beautyskincareemulsifier

In plain English

PEG-15/Laureth Dimethicone Crosspolymer is a silicone-based ingredient that helps mix oil and water in your skincare products. It also gives them a smooth, silky feel and helps other ingredients spread evenly on your skin. Think of it as a helper that keeps your lotion or sunscreen from separating and makes it glide on nicely.

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
synthetic
Evidence
moderate
Irritation
low
Clogging risk
low
How reviews are scored

Quick decision guide

Useful, but context matters

PEG-15/Laureth Dimethicone Crosspolymer 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-15/Laureth Dimethicone Crosspolymer.
  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 silicone polymer modified with polyethylene glycol (PEG) and lauryl groups, creating a crosslinked structure that acts as a powerful emulsifier and stabilizer.

How it works

It reduces the surface tension between oil and water, allowing them to blend into a stable emulsion. Its crosslinked silicone network also thickens the product and provides a lightweight, non-greasy feel on the skin.

Pros

Excellent emulsifier

Helps water and oil mix seamlessly, preventing separation and ensuring a consistent product texture.

Silky, lightweight feel

Leaves skin feeling smooth and soft without heaviness or shine, ideal for daytime use.

Cons and cautions

Synthetic origin

Made from petrochemicals, which may be a concern for those seeking natural or minimal-ingredient routines.

PEG controversy

PEG compounds can sometimes contain impurities like ethylene oxide, though cosmetic-grade ingredients are purified to safe levels.

Best for

  • People who prefer lightweight, non-greasy moisturizers
  • Those with normal to oily skin looking for a smooth finish

Use caution if

  • Individuals strictly avoiding all synthetic silicones or PEG compounds

Usage tips

Use in products where a stable, non-greasy emulsion is desired, such as lightweight moisturizers or sunscreens.
Combine with other silicones or oils to fine-tune texture and feel.

Safety summary

PEG-15/Laureth Dimethicone Crosspolymer is considered safe for topical use in cosmetics. It has low irritation and comedogenic potential. As with all PEG compounds, purity is important, but cosmetic-grade ingredients are well-regulated.

Research notes

Limited independent studies exist specifically on this ingredient, but it is widely used in cosmetics and generally recognized as safe by expert panels such as the Cosmetic Ingredient Review (CIR).

Common label clues

Typical concentration
0.5% to 5%
Regulatory status
Approved for use in cosmetics in the US, EU, and many other regions, with no specific restrictions at typical concentrations.
Common uses
Moisturizers, Sunscreens, Foundations, Serums
Environmental note
Silicones can persist in the environment, but this crosspolymer form is less likely to bioaccumulate compared to some linear silicones.

Good to know

  • This ingredient is often used in 'silicone-based' primers and foundations for its smooth application.
  • It is considered safe by major cosmetic regulatory bodies when used as intended.

Common questions

What is PEG-15/Laureth Dimethicone Crosspolymer in beauty products?

PEG-15/Laureth Dimethicone Crosspolymer is a silicone-based ingredient that helps mix oil and water in your skincare products. It also gives them a smooth, silky feel and helps other ingredients spread evenly on your skin. Think of it as a helper that keeps your lotion or sunscreen from separating and makes it glide on nicely.

What does PEG-15/Laureth Dimethicone Crosspolymer do in a beauty product?

It reduces the surface tension between oil and water, allowing them to blend into a stable emulsion. Its crosslinked silicone network also thickens the product and provides a lightweight, non-greasy feel on the skin.

Is PEG-15/Laureth Dimethicone Crosspolymer safe for most people?

PEG-15/Laureth Dimethicone Crosspolymer is considered safe for topical use in cosmetics. It has low irritation and comedogenic potential. As with all PEG compounds, purity is important, but cosmetic-grade ingredients are well-regulated.

Who should be careful with PEG-15/Laureth Dimethicone Crosspolymer?

Individuals strictly avoiding all synthetic silicones or PEG compounds

Research sources

Cosmetic Ingredient Review (CIR) - Safety Assessment of Dimethicone CrosspolymersOpenPubChem - PEG-15/Laureth Dimethicone CrosspolymerOpenEWG Skin Deep - PEG-15/Laureth Dimethicone CrosspolymerOpen

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.