Ingredient review

PEG/PPG-16/2 Dimethicone

INCI: PEG/PPG-16/2 Dimethicone

A gentle silicone emulsifier that stabilizes formulas and leaves skin feeling smooth without clogging pores.

beautyskincareemulsifier

In plain English

PEG/PPG-16/2 Dimethicone is a modified silicone that helps mix water and oil in skincare products. It spreads easily, creates a silky feel, and is considered very gentle on skin. Unlike some silicones, it's not known to clog pores or cause irritation, making it a common choice in lightweight moisturizers and sunscreens.

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

PEG/PPG-16/2 Dimethicone 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-16/2 Dimethicone.
  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 silicone polymer modified with polyethylene glycol (PEG) and polypropylene glycol (PPG) chains, making it water-dispersible while retaining silicone's smooth, spreadable properties.

How it works

It acts as an emulsifier, allowing water and oil ingredients to blend into a stable cream or lotion. It also forms a thin, breathable film on the skin that reduces water loss (transepidermal water loss, or TEWL) without feeling heavy or greasy.

Pros

Gentle on skin

Rated low for both irritation and comedogenicity, so it's unlikely to cause breakouts or stinging, even for sensitive skin.

Improves product texture

Creates a smooth, silky feel that makes creams and sunscreens easier to apply and more pleasant to wear.

Cons and cautions

Silicone buildup

With repeated use, silicones can accumulate on skin or hair, potentially requiring a deeper cleanse to remove.

PEG concerns

Some consumers avoid PEG compounds due to potential impurities from manufacturing, though cosmetic-grade PEGs are purified.

Best for

  • People with normal to oily skin who want a lightweight moisturizer
  • Anyone looking for a gentle, non-irritating emulsifier in their skincare

Use caution if

  • Those who prefer silicone-free or PEG-free formulations

Usage tips

Use a gentle cleanser if you notice any residue after using silicone-heavy products.
Layer water-based serums before silicone-containing creams for better absorption.

Safety summary

PEG/PPG-16/2 Dimethicone is considered safe for cosmetic use at typical concentrations. It has low irritation and comedogenic potential, and no significant safety concerns have been raised by regulatory bodies.

Research notes

Safety assessments by the Cosmetic Ingredient Review (CIR) panel have concluded that PEG/PPG dimethicones are safe as used in cosmetics. Studies show low skin penetration and minimal irritation.

Common label clues

Typical concentration
0.5% to 5%
Regulatory status
Approved for use in cosmetics globally, including by the U.S. FDA and EU CosIng database, with no concentration restrictions.
Common uses
Moisturizers, Serums, Sunscreens, Foundations
Environmental note
Silicones can persist in the environment, but PEG-modified versions like this one may break down more readily than unmodified silicones.

Good to know

  • PEG/PPG-16/2 Dimethicone is considered biodegradable under certain conditions, unlike some other silicones.
  • It is often used in 'water-in-silicone' emulsions for a lightweight, breathable feel.

Common questions

What is PEG/PPG-16/2 Dimethicone in beauty products?

PEG/PPG-16/2 Dimethicone is a modified silicone that helps mix water and oil in skincare products. It spreads easily, creates a silky feel, and is considered very gentle on skin. Unlike some silicones, it's not known to clog pores or cause irritation, making it a common choice in lightweight moisturizers and sunscreens.

What does PEG/PPG-16/2 Dimethicone do in a beauty product?

It acts as an emulsifier, allowing water and oil ingredients to blend into a stable cream or lotion. It also forms a thin, breathable film on the skin that reduces water loss (transepidermal water loss, or TEWL) without feeling heavy or greasy.

Is PEG/PPG-16/2 Dimethicone safe for most people?

PEG/PPG-16/2 Dimethicone is considered safe for cosmetic use at typical concentrations. It has low irritation and comedogenic potential, and no significant safety concerns have been raised by regulatory bodies.

Who should be careful with PEG/PPG-16/2 Dimethicone?

Those who prefer silicone-free or PEG-free formulations

Research sources

Cosmetic Ingredient Review (CIR) - Safety Assessment of PEG/PPG DimethiconesOpenPubChem - PEG/PPG-16/2 DimethiconeOpenEU CosIng DatabaseOpen

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.