Ingredient review
PEG/PPG-30/35 Copolymer
INCI: PEG/PPG-30/35 Copolymer
A safe, synthetic thickener that improves product texture and stability, but offers no direct skin benefit.
In plain English
PEG/PPG-30/35 Copolymer is a man-made ingredient that helps skincare products feel smooth and spread easily. It works by thickening the formula and helping oil and water mix together. It doesn't actively treat skin concerns, but it makes the product nicer to use.
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-30/35 Copolymer 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-30/35 Copolymer.
- 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 copolymer made from repeating units of polyethylene glycol (PEG) and polypropylene glycol (PPG). It is a water-soluble, non-ionic polymer used to adjust viscosity and stabilize emulsions.
How it works
In a cosmetic product, it dissolves in water and forms a network that thickens the formula. It also sits at the interface between oil and water droplets, preventing them from separating. On skin, it can leave a light, non-sticky film that helps other ingredients stay put.
Pros
Improves product feel
Makes creams and serums glide on smoothly without a sticky or greasy residue.
Stabilizes formulas
Helps prevent oil and water from separating, so your product stays consistent from first use to last.
Cons and cautions
No direct skin benefit
It doesn't hydrate, exfoliate, or treat any skin concern—it's purely a texture and stability aid.
Synthetic origin
Made from petroleum-derived materials, which may be a turn-off for those seeking natural or eco-friendly options.
Best for
- Anyone who wants a smooth, stable lotion or serum
- People with normal to oily skin who prefer lightweight textures
Use caution if
- Those seeking only natural or plant-based ingredients
- Individuals with known sensitivity to PEG compounds (rare)
Usage tips
Safety summary
PEG/PPG-30/35 Copolymer is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential. Rare allergic reactions are possible, but overall it is well-tolerated.
Research notes
The Cosmetic Ingredient Review (CIR) panel has reviewed PEG/PPG copolymers and concluded they are safe for use in cosmetics. No significant human or animal toxicity data raises concern at current usage levels.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics by the FDA and the European Commission. The Cosmetic Ingredient Review (CIR) panel has deemed PEG/PPG copolymers safe as used in cosmetics.
- Common uses
- Cleansers, Lotions, Serums, Hair conditioners
- Environmental note
- As a synthetic polymer, it is not biodegradable. However, it is used in low concentrations and is not known to accumulate in the environment.
Good to know
- PEG/PPG copolymers are common in many rinse-off and leave-on products.
- The numbers 30 and 35 refer to the average number of repeating units in the PEG and PPG chains, respectively.
Common questions
What is PEG/PPG-30/35 Copolymer in beauty products?
PEG/PPG-30/35 Copolymer is a man-made ingredient that helps skincare products feel smooth and spread easily. It works by thickening the formula and helping oil and water mix together. It doesn't actively treat skin concerns, but it makes the product nicer to use.
What does PEG/PPG-30/35 Copolymer do in a beauty product?
In a cosmetic product, it dissolves in water and forms a network that thickens the formula. It also sits at the interface between oil and water droplets, preventing them from separating. On skin, it can leave a light, non-sticky film that helps other ingredients stay put.
Is PEG/PPG-30/35 Copolymer safe for most people?
PEG/PPG-30/35 Copolymer is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential. Rare allergic reactions are possible, but overall it is well-tolerated.
Who should be careful with PEG/PPG-30/35 Copolymer?
Those seeking only natural or plant-based ingredients Individuals with known sensitivity to PEG compounds (rare)
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.