Ingredient review
PEG/PPG-8/26 Dimethicone
INCI: PEG/PPG-8/26 Dimethicone
A gentle, water-friendly silicone that gives products a silky feel without heavy buildup.
In plain English
This is a type of silicone that has been modified to mix with water, so it feels lighter and less greasy than traditional silicones. It spreads easily on the skin, leaving a smooth, velvety finish that can help makeup glide on or reduce the sticky feeling in serums and creams.
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-8/26 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-8/26 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 synthetic silicone polymer with both water-loving (PEG/PPG) and oil-loving (dimethicone) parts, making it dispersible in water-based formulas.
How it works
It forms a thin, breathable film on the skin that smooths the surface, reduces water loss, and helps other ingredients spread evenly without clogging pores.
Pros
Lightweight feel
Unlike heavier silicones, this version mixes with water so it feels airy and non-greasy on the skin.
Improves product texture
It helps serums and creams spread more smoothly, reducing the need to rub or tug at the skin.
Cons and cautions
Potential buildup
If you use multiple silicone-based products, you may need a double cleanse to fully remove residue.
Not eco-friendly
Silicones are not biodegradable and can accumulate in the environment, which is a concern for some consumers.
Best for
- People with normal to oily skin who want a matte finish
- Anyone using thick creams or sunscreens who wants a lighter texture
Use caution if
- Those who prefer silicone-free routines
- People with very dry skin who need richer occlusives
Usage tips
Safety summary
Generally recognized as safe for topical use at typical concentrations. Low irritation and comedogenic risk. Some individuals may prefer to avoid silicones for environmental or personal reasons.
Research notes
The Cosmetic Ingredient Review panel has evaluated dimethicone and its derivatives and found them safe for use in cosmetics. Studies show low skin penetration and minimal irritation potential.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics globally, including by the FDA (USA) and EU CosIng database.
- Common uses
- Serums, Moisturizers, Primers, Sunscreens, Foundations
- Environmental note
- Silicones are not biodegradable; however, this water-dispersible version may have lower bioaccumulation potential than some other silicones.
Good to know
- PEG/PPG-8/26 Dimethicone is considered safe in cosmetics by the Cosmetic Ingredient Review panel
- It is often used to replace heavier oils in 'oil-free' products
Common questions
What is PEG/PPG-8/26 Dimethicone in beauty products?
This is a type of silicone that has been modified to mix with water, so it feels lighter and less greasy than traditional silicones. It spreads easily on the skin, leaving a smooth, velvety finish that can help makeup glide on or reduce the sticky feeling in serums and creams.
What does PEG/PPG-8/26 Dimethicone do in a beauty product?
It forms a thin, breathable film on the skin that smooths the surface, reduces water loss, and helps other ingredients spread evenly without clogging pores.
Is PEG/PPG-8/26 Dimethicone safe for most people?
Generally recognized as safe for topical use at typical concentrations. Low irritation and comedogenic risk. Some individuals may prefer to avoid silicones for environmental or personal reasons.
Who should be careful with PEG/PPG-8/26 Dimethicone?
Those who prefer silicone-free routines People with very dry skin who need richer occlusives
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.