Ingredient review
PEG/PPG-20/6 Dimethicone
INCI: PEG/PPG-20/6 Dimethicone
A gentle silicone emulsifier that improves product texture and spreadability without clogging pores.
In plain English
PEG/PPG-20/6 Dimethicone is a type of silicone that helps mix water and oil in skincare products. It makes creams feel silky and smooth, spreads easily on skin, and leaves a soft, non-greasy finish. The 'PEG/PPG' part means it has water-friendly chains attached, so it rinses off more easily than some other silicones.
Review score
Safety, usefulness, and evidence
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
Quick decision guide
Useful, but context matters
PEG/PPG-20/6 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.
- Step 1Start with the score, then check the irritation and clogging risk before judging PEG/PPG-20/6 Dimethicone.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- 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
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A modified silicone polymer with polyethylene glycol (PEG) and polypropylene glycol (PPG) chains attached. This modification makes it water-dispersible, so it can act as an emulsifier to blend water and oil phases in a formula.
How it works
It sits at the boundary between water and oil droplets in a product, stabilizing the mixture so it doesn't separate. On skin, it forms a thin, breathable film that feels smooth and helps lock in moisture without a heavy or sticky feel.
Pros
Silky texture
Creates a smooth, velvety feel on skin that makes products glide on easily and feel luxurious.
Low irritation
Rated very low on the irritation scale, making it suitable for sensitive skin types.
Cons and cautions
Synthetic origin
Derived from petroleum-based materials, which may not align with natural or clean beauty preferences.
Potential buildup
In hair products, frequent use without proper cleansing can lead to silicone buildup over time.
Best for
- People who want a smooth, silky feel in moisturizers or makeup
- Those with normal to dry skin looking for a gentle emulsifier
Use caution if
- Those who strictly avoid silicones or synthetic ingredients
- People with very oily skin who prefer lightweight, silicone-free textures
Usage tips
Safety summary
PEG/PPG-20/6 Dimethicone is considered safe for use in cosmetics. It has low irritation and comedogenic potential, and no significant toxicity concerns at typical concentrations. However, as a synthetic silicone, it may not be preferred by those seeking natural ingredients.
Research notes
Studies on PEG/PPG dimethicones indicate they are mild and effective emulsifiers. The Cosmetic Ingredient Review (CIR) panel has reviewed similar silicone compounds and found them safe for topical use. Most evidence comes from formulation science rather than clinical trials.
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 use levels.
- Common uses
- Moisturizers, Serums, Sunscreens, Foundations, Hair conditioners
- Environmental note
- Silicones can persist in the environment, but PEG/PPG-modified versions are more biodegradable than unmodified dimethicone.
Good to know
- PEG/PPG-20/6 Dimethicone is considered biodegradable under certain conditions.
- It is often used in 'silicone blend' emulsifiers to improve formula stability.
Common questions
What is PEG/PPG-20/6 Dimethicone in beauty products?
PEG/PPG-20/6 Dimethicone is a type of silicone that helps mix water and oil in skincare products. It makes creams feel silky and smooth, spreads easily on skin, and leaves a soft, non-greasy finish. The 'PEG/PPG' part means it has water-friendly chains attached, so it rinses off more easily than some other silicones.
What does PEG/PPG-20/6 Dimethicone do in a beauty product?
It sits at the boundary between water and oil droplets in a product, stabilizing the mixture so it doesn't separate. On skin, it forms a thin, breathable film that feels smooth and helps lock in moisture without a heavy or sticky feel.
Is PEG/PPG-20/6 Dimethicone safe for most people?
PEG/PPG-20/6 Dimethicone is considered safe for use in cosmetics. It has low irritation and comedogenic potential, and no significant toxicity concerns at typical concentrations. However, as a synthetic silicone, it may not be preferred by those seeking natural ingredients.
Who should be careful with PEG/PPG-20/6 Dimethicone?
Those who strictly avoid silicones or synthetic ingredients People with very oily skin who prefer lightweight, silicone-free textures
Research sources
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.