Ingredient review
PPG-26/TDI Copolymer
INCI: PPG-26/TDI Copolymer
A synthetic polymer that helps makeup and sunscreen stay put longer, but it's not a skincare active and may feel heavy on oily skin.
In plain English
PPG-26/TDI Copolymer is a man-made ingredient that forms a thin, flexible film on your skin. This film helps other ingredients—like sunscreen filters or pigments—stay in place longer and resist water and sweat. Think of it like a gentle, invisible glue that keeps your makeup or sunscreen from sliding off. It's not absorbed into the skin and sits on the surface, so it's generally safe but can feel a bit tacky or heavy for some people, especially if you have oily skin.
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
PPG-26/TDI 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 PPG-26/TDI 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
PPG-26/TDI Copolymer is a synthetic polymer created by reacting propylene glycol (PPG) with toluene diisocyanate (TDI). It belongs to a class of ingredients called film-formers, which are used to create a continuous layer on the skin or hair. In cosmetics, it's valued for its ability to improve water resistance and extend the wear time of products.
How it works
When applied, the copolymer molecules link together to form a thin, flexible film on the skin's surface. This film acts as a barrier that locks in pigments, sunscreen actives, and other ingredients, preventing them from migrating, smudging, or washing off easily. It also helps the product spread evenly and feel smooth.
Pros
Boosts water resistance
Helps sunscreens and makeup stay effective even when you sweat or swim, so you don't have to reapply as often.
Extends wear time
Keeps foundation and eye makeup from fading or creasing throughout the day, reducing the need for touch-ups.
Cons and cautions
Can feel heavy
The film it creates may feel tacky or thick on the skin, which can be uncomfortable for those with oily or combination skin.
Requires thorough removal
Because it forms a durable film, it may not wash off with a gentle cleanser alone, often needing an oil-based cleanser or micellar water.
Best for
- People who want long-lasting, water-resistant sunscreen or makeup
- Those with normal to dry skin who don't mind a slightly heavier feel
Use caution if
- Individuals with very oily or acne-prone skin who prefer lightweight, non-film-forming products
Usage tips
Safety summary
PPG-26/TDI Copolymer is considered safe for use in cosmetics at typical concentrations. It is not absorbed into the skin and has low irritation and comedogenic potential. However, individuals with very sensitive or acne-prone skin may find it too heavy or occlusive.
Research notes
The safety of PPG-26/TDI Copolymer is supported by industry safety assessments and its long history of use in cosmetics. Specific peer-reviewed studies on this exact polymer are limited, but similar film-forming polymers have been reviewed by the Cosmetic Ingredient Review (CIR) panel and deemed safe.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions. The Cosmetic Ingredient Review (CIR) panel has evaluated similar film-forming polymers and found them safe at typical use concentrations.
- Common uses
- Sunscreens, Foundations, Long-wear makeup, Water-resistant products
- Environmental note
- As a synthetic polymer, it is not biodegradable and may accumulate in the environment. Some regions are exploring restrictions on certain film-forming polymers for environmental reasons.
Good to know
- PPG-26/TDI Copolymer is often found in 'long-wear' or 'waterproof' labeled products.
- It is not absorbed into the skin and sits on the surface, so it's generally considered safe for most skin types.
Common questions
What is PPG-26/TDI Copolymer in beauty products?
PPG-26/TDI Copolymer is a man-made ingredient that forms a thin, flexible film on your skin. This film helps other ingredients—like sunscreen filters or pigments—stay in place longer and resist water and sweat. Think of it like a gentle, invisible glue that keeps your makeup or sunscreen from sliding off. It's not absorbed into the skin and sits on the surface, so it's generally safe but can feel a bit tacky or heavy for some people, especially if you have oily skin.
What does PPG-26/TDI Copolymer do in a beauty product?
When applied, the copolymer molecules link together to form a thin, flexible film on the skin's surface. This film acts as a barrier that locks in pigments, sunscreen actives, and other ingredients, preventing them from migrating, smudging, or washing off easily. It also helps the product spread evenly and feel smooth.
Is PPG-26/TDI Copolymer safe for most people?
PPG-26/TDI Copolymer is considered safe for use in cosmetics at typical concentrations. It is not absorbed into the skin and has low irritation and comedogenic potential. However, individuals with very sensitive or acne-prone skin may find it too heavy or occlusive.
Who should be careful with PPG-26/TDI Copolymer?
Individuals with very oily or acne-prone skin who prefer lightweight, non-film-forming products
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.