Ingredient review
PEG/PPG-16/8 Dimethicone
INCI: PEG/PPG-16/8 Dimethicone
A gentle silicone emulsifier that helps create smooth, stable formulas without heavy residue.
In plain English
PEG/PPG-16/8 Dimethicone is a silicone-based ingredient that acts like a bridge between water and oil in skincare products. It helps mix ingredients that normally don't blend well, creating a smooth, even texture. It also leaves a light, silky feel on the skin without clogging pores or feeling greasy.
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-16/8 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-16/8 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 to a dimethicone backbone. This structure gives it both water-friendly and oil-friendly properties, making it a versatile emulsifier.
How it works
It reduces the surface tension between water and oil droplets, allowing them to mix into a stable emulsion. Once applied, it forms a thin, breathable film on the skin that improves spreadability and leaves a smooth, non-tacky finish.
Pros
Lightweight feel
Unlike some silicones, this ingredient leaves a very light, silky finish that doesn't feel heavy or greasy on the skin.
Stable emulsions
It helps keep water and oil mixed together, preventing your product from separating and ensuring consistent texture and performance.
Cons and cautions
Silicone concerns
Some people choose to avoid silicones due to environmental persistence or personal preference, though this ingredient is generally considered safe.
PEG impurities
PEG compounds can sometimes contain trace impurities like ethylene oxide during manufacturing, though reputable brands use purified grades.
Best for
- People with normal to oily skin who prefer lightweight textures
- Anyone using water-and-oil blend products like lotions or sunscreens
Use caution if
- Those who strictly avoid silicones or PEG compounds in their routine
Usage tips
Safety summary
PEG/PPG-16/8 Dimethicone is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. As with all PEG compounds, purity during manufacturing is important to avoid trace impurities.
Research notes
Safety assessments by the Cosmetic Ingredient Review (CIR) panel have found dimethicone and its derivatives to be safe in cosmetic use. Specific studies on PEG/PPG-16/8 Dimethicone are limited, but its structure is well-understood and widely used in commercial products.
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, with no concentration restrictions.
- Common uses
- Moisturizers, Serums, Sunscreens, Foundations, Hair conditioners
- Environmental note
- Silicones can persist in the environment, but PEG/PPG-16/8 Dimethicone is modified to be more biodegradable than some other silicones.
Good to know
- This ingredient is often used in 'water-in-silicone' emulsions, which are common in long-wear makeup and sunscreens.
- It is considered biodegradable in some studies, but silicones in general have mixed environmental reviews.
Common questions
What is PEG/PPG-16/8 Dimethicone in beauty products?
PEG/PPG-16/8 Dimethicone is a silicone-based ingredient that acts like a bridge between water and oil in skincare products. It helps mix ingredients that normally don't blend well, creating a smooth, even texture. It also leaves a light, silky feel on the skin without clogging pores or feeling greasy.
What does PEG/PPG-16/8 Dimethicone do in a beauty product?
It reduces the surface tension between water and oil droplets, allowing them to mix into a stable emulsion. Once applied, it forms a thin, breathable film on the skin that improves spreadability and leaves a smooth, non-tacky finish.
Is PEG/PPG-16/8 Dimethicone safe for most people?
PEG/PPG-16/8 Dimethicone is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. As with all PEG compounds, purity during manufacturing is important to avoid trace impurities.
Who should be careful with PEG/PPG-16/8 Dimethicone?
Those who strictly avoid silicones or PEG compounds in their routine
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.