Ingredient review
PEG/PPG-20/20 Dimethicone
INCI: PEG/PPG-20/20 Dimethicone
A versatile silicone emulsifier that improves product texture and spreadability without clogging pores.
In plain English
PEG/PPG-20/20 Dimethicone is a modified silicone that acts like a bridge between water and oil in a formula. It helps create smooth, lightweight creams and lotions that spread easily and leave a silky, non-greasy feel on skin. The PEG/PPG parts make it water-friendly, while the dimethicone part gives that classic silicone slip. It's commonly used in makeup and skincare to improve texture and stability.
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
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
PEG/PPG-20/20 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-20/20 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 silicone-based copolymer (a molecule made of repeating units) that has been modified with polyethylene glycol (PEG) and polypropylene glycol (PPG) chains to make it water-dispersible. It functions primarily as an emulsifier and skin feel enhancer.
How it works
It reduces the surface tension between water and oil ingredients, allowing them to blend into a stable emulsion. Once applied, it forms a thin, breathable film on the skin that feels smooth and silky, while also helping other ingredients spread evenly.
Pros
Lightweight feel
Leaves a silky, non-greasy finish that works well under makeup and for daytime use.
Stable emulsions
Helps prevent creams and lotions from separating, so the product stays consistent from first use to last.
Cons and cautions
Environmental persistence
Like many silicones, it does not break down quickly in the environment, which may be a concern for eco-conscious users.
PEG impurity concerns
PEG compounds can sometimes contain trace levels of ethylene oxide or 1,4-dioxane, though cosmetic-grade ingredients are purified to safe limits.
Best for
- People who prefer lightweight, non-greasy moisturizers and sunscreens
- Those with normal to combination skin looking for a smooth makeup base
Use caution if
- Individuals who strictly avoid silicones or PEG compounds for personal or environmental reasons
Usage tips
Safety summary
PEG/PPG-20/20 Dimethicone is considered safe for use in cosmetics at typical concentrations. The Cosmetic Ingredient Review (CIR) panel has reviewed similar silicone copolymers and found them safe when formulated properly. Trace impurities from PEG manufacturing are kept to very low levels in cosmetic-grade ingredients.
Research notes
Studies on silicone copolymers show they are well-tolerated on skin and do not cause significant irritation or sensitization. Research on environmental impact is ongoing, but current evidence suggests low acute toxicity to aquatic life.
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, Sunscreens, Foundations, Serums, Hair conditioners
- Environmental note
- Silicones like this one are not readily biodegradable and can accumulate in aquatic environments. Some manufacturers are working on more eco-friendly alternatives.
Good to know
- This ingredient is often used in 'silicone-based' primers and foundations to create a blurring effect on pores.
- It is considered non-comedogenic by most dermatological sources, meaning it is unlikely to clog pores.
Common questions
What is PEG/PPG-20/20 Dimethicone in beauty products?
PEG/PPG-20/20 Dimethicone is a modified silicone that acts like a bridge between water and oil in a formula. It helps create smooth, lightweight creams and lotions that spread easily and leave a silky, non-greasy feel on skin. The PEG/PPG parts make it water-friendly, while the dimethicone part gives that classic silicone slip. It's commonly used in makeup and skincare to improve texture and stability.
What does PEG/PPG-20/20 Dimethicone do in a beauty product?
It reduces the surface tension between water and oil ingredients, allowing them to blend into a stable emulsion. Once applied, it forms a thin, breathable film on the skin that feels smooth and silky, while also helping other ingredients spread evenly.
Is PEG/PPG-20/20 Dimethicone safe for most people?
PEG/PPG-20/20 Dimethicone is considered safe for use in cosmetics at typical concentrations. The Cosmetic Ingredient Review (CIR) panel has reviewed similar silicone copolymers and found them safe when formulated properly. Trace impurities from PEG manufacturing are kept to very low levels in cosmetic-grade ingredients.
Who should be careful with PEG/PPG-20/20 Dimethicone?
Individuals who strictly avoid silicones or PEG compounds for personal or environmental reasons
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.