Ingredient review

PEG-15/Laureth Polysiloxane Crosspolymer

INCI: PEG-15/LAURYL POLYDIMETHYLSILOXYETHYL DIMETHICONE CROSSPOLYMER

A gentle silicone emulsifier that improves product feel and stability, but may not suit those avoiding silicones or PEG compounds.

beautyskincareemulsifier

In plain English

This is a man-made silicone ingredient that helps mix water and oil in a formula, giving creams and lotions a smooth, silky feel without greasiness. It's like a tiny bridge that holds the two phases together so the product stays stable and spreads nicely on your skin.

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 Polysiloxane 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 Polysiloxane 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 crosslinked silicone polymer modified with polyethylene glycol (PEG) and lauryl groups, designed to act as a powerful emulsifier and texture modifier in cosmetic formulations.

How it works

Its unique structure allows it to reduce surface tension between water and oil droplets, creating a stable emulsion. The silicone backbone gives a lightweight, non-tacky feel, while the PEG chains improve water compatibility and rinse-off ease.

Pros

Excellent texture

Provides a smooth, silky feel that makes products glide on easily without stickiness.

Good stability

Helps prevent separation of water and oil phases, extending shelf life and maintaining consistency.

Cons and cautions

Synthetic origin

Not natural or biodegradable, which may be a concern for eco-conscious users.

Potential impurities

PEG chains can contain trace ethylene oxide or 1,4-dioxane if not properly purified, though reputable brands ensure safety.

Best for

  • Anyone who likes lightweight, silky moisturizers or primers
  • People with normal to oily skin looking for a non-greasy finish

Use caution if

  • Those strictly avoiding silicones or PEG compounds
  • Individuals with known sensitivity to silicone-based ingredients

Usage tips

Look for products from trusted brands that test for purity and avoid contaminants.
If you prefer silicone-free routines, check the full ingredient list for this compound.

Safety summary

Generally recognized as safe for topical use in cosmetics. Low irritation and comedogenic risk. As with any PEG-containing ingredient, quality control is important to avoid impurities.

Research notes

Limited peer-reviewed studies specifically on this crosspolymer, but silicone emulsifiers as a class have a long history of safe use in cosmetics. Regulatory panels (e.g., CIR) have reviewed similar ingredients and found them safe.

Common label clues

Typical concentration
0.5% to 5%
Regulatory status
Approved for use in cosmetics by the FDA and EU CosIng database, with no known restrictions at typical levels.
Common uses
Moisturizers, Sunscreens, Foundations, Primers
Environmental note
Silicones can persist in the environment; however, this crosspolymer form is less likely to bioaccumulate than some linear silicones.

Good to know

  • This ingredient is often used in combination with other silicones for a velvety finish.
  • It is considered safe by major regulatory bodies when used in typical cosmetic concentrations.

Common questions

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

This is a man-made silicone ingredient that helps mix water and oil in a formula, giving creams and lotions a smooth, silky feel without greasiness. It's like a tiny bridge that holds the two phases together so the product stays stable and spreads nicely on your skin.

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

Its unique structure allows it to reduce surface tension between water and oil droplets, creating a stable emulsion. The silicone backbone gives a lightweight, non-tacky feel, while the PEG chains improve water compatibility and rinse-off ease.

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

Generally recognized as safe for topical use in cosmetics. Low irritation and comedogenic risk. As with any PEG-containing ingredient, quality control is important to avoid impurities.

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

Those strictly avoiding silicones or PEG compounds Individuals with known sensitivity to silicone-based ingredients

Research sources

CosIng Database - European CommissionOpenCIR Safety Review of SiliconesOpenPubMed - Silicone Emulsifiers 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.