Ingredient review
Bis-PPG-15 Dimethicone/IPDI Copolymer
INCI: BIS-PPG-15 DIMETHICONE/IPDI COPOLYMER
A synthetic silicone polymer that helps makeup and sunscreen stay put without feeling heavy or greasy.
In plain English
This is a man-made ingredient that combines silicone and plastic-like molecules to create a flexible, water-resistant film on your skin. It's commonly used in long-wear makeup and sunscreens to help them last longer and resist sweat or water. Despite its complex name, it's generally well-tolerated and doesn't clog pores or cause irritation for most people.
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
Bis-PPG-15 Dimethicone/IPDI 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 Bis-PPG-15 Dimethicone/IPDI 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 by reacting PPG-15 dimethicone (a silicone derivative) with IPDI (isophorone diisocyanate), creating a flexible film-forming polymer.
How it works
When applied, the copolymer forms a thin, breathable film on the skin's surface. This film helps other ingredients (like pigments or UV filters) adhere better and resist removal by water, sweat, or friction. It also gives a smooth, silky feel without excessive shine.
Pros
Excellent wear time
Helps makeup and sunscreen stay intact for hours, even in humid or sweaty conditions.
Lightweight feel
Unlike some older film-formers, this copolymer spreads into a thin, flexible film that doesn't feel heavy or sticky.
Cons and cautions
Synthetic origin
Made from petrochemicals and diisocyanates, which may concern those seeking natural or 'clean' formulations.
Potential dryness
The film-forming effect can feel slightly tight or drying on very dry or dehydrated skin, especially if used alone.
Best for
- People who want long-wearing makeup or water-resistant sunscreen
- Those with normal to oily skin who prefer a matte finish
Use caution if
- Individuals with extremely dry or compromised skin barriers who may find film-formers uncomfortable
Usage tips
Safety summary
Considered safe for cosmetic use at typical concentrations. The polymer is too large to penetrate the skin significantly, and the reactive monomers are consumed during manufacturing. Rare reports of mild irritation in sensitive individuals.
Research notes
Limited independent studies on this specific copolymer, but similar silicone film-formers have a long history of safe use in cosmetics. The Cosmetic Ingredient Review (CIR) panel has reviewed related dimethicone copolymers and found them safe.
Common label clues
- Typical concentration
- 1-10% in leave-on products
- Regulatory status
- Approved for use in cosmetics globally, including by the FDA (US) and EU CosIng database. The IPDI monomer is fully reacted and not present in significant free form.
- Common uses
- Long-wear foundations, Waterproof mascaras, Sunscreens, Lip products
- Environmental note
- As a silicone-based polymer, it may not be biodegradable. However, its high molecular weight reduces skin absorption and environmental mobility.
Good to know
- This ingredient is not water-soluble, so it requires a double-cleansing routine for complete removal.
- It is often combined with other silicones to balance feel and performance.
Common questions
What is Bis-PPG-15 Dimethicone/IPDI Copolymer in beauty products?
This is a man-made ingredient that combines silicone and plastic-like molecules to create a flexible, water-resistant film on your skin. It's commonly used in long-wear makeup and sunscreens to help them last longer and resist sweat or water. Despite its complex name, it's generally well-tolerated and doesn't clog pores or cause irritation for most people.
What does Bis-PPG-15 Dimethicone/IPDI Copolymer do in a beauty product?
When applied, the copolymer forms a thin, breathable film on the skin's surface. This film helps other ingredients (like pigments or UV filters) adhere better and resist removal by water, sweat, or friction. It also gives a smooth, silky feel without excessive shine.
Is Bis-PPG-15 Dimethicone/IPDI Copolymer safe for most people?
Considered safe for cosmetic use at typical concentrations. The polymer is too large to penetrate the skin significantly, and the reactive monomers are consumed during manufacturing. Rare reports of mild irritation in sensitive individuals.
Who should be careful with Bis-PPG-15 Dimethicone/IPDI Copolymer?
Individuals with extremely dry or compromised skin barriers who may find film-formers uncomfortable
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.