Ingredient review
PPG-12/SMDI Copolymer
INCI: PPG-12/SMDI Copolymer
A synthetic film-former that helps makeup and sunscreen stay put longer, but may feel tight or heavy on some skin types.
In plain English
PPG-12/SMDI Copolymer is a synthetic ingredient that creates a thin, flexible film on your skin. This film helps other ingredients—like pigments in foundation or UV filters in sunscreen—stay in place longer and resist water and sweat. Think of it like a clear, invisible seal that keeps your makeup from sliding off. It's commonly found in long-wear and waterproof products.
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-12/SMDI 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-12/SMDI 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 polymer made by reacting propylene glycol (PPG-12) with a type of diisocyanate (SMDI). It is designed to form a durable, flexible film on the skin or hair.
How it works
When applied, the copolymer dries down to form a continuous, water-resistant film. This film physically locks in other ingredients, reducing transfer, smudging, and fading. It also helps control the viscosity of the product, making it easier to apply evenly.
Pros
Boosts wear time
Creates a durable film that helps makeup and sunscreen last through sweat, humidity, and water exposure.
Reduces transfer
Minimizes smudging and transfer onto clothes, masks, or phone screens, keeping your look intact longer.
Cons and cautions
Can feel tight
The film may create a slight pulling or tightening sensation, especially on dry or sensitive skin.
Removal requires effort
Because it's water-resistant, you'll likely need an oil-based or dual-phase cleanser to fully remove it without rubbing.
Best for
- People who want long-lasting, transfer-resistant makeup
- Those who need water-resistant sunscreen for swimming or sweating
Use caution if
- Individuals with very dry or dehydrated skin who may find film-formers uncomfortable
Usage tips
Safety summary
PPG-12/SMDI Copolymer is considered safe for topical use at typical concentrations. It has low irritation and comedogenic potential. However, individuals with very sensitive or dry skin may find the film-forming effect uncomfortable.
Research notes
There is limited independent research on this specific copolymer, but it is structurally similar to other widely used film-forming polymers that have a strong safety record. The Cosmetic Ingredient Review (CIR) panel has reviewed related polymers and found them safe as used.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics in the US (FDA), EU (CosIng), and many other regions. No known restrictions at typical use levels.
- Common uses
- Long-wear foundations, Waterproof mascara, Sunscreens, Lip products
- Environmental note
- As a synthetic polymer, it is not readily biodegradable. Its environmental persistence is a concern, though it is used in small amounts in rinse-off and leave-on products.
Good to know
- PPG-12/SMDI Copolymer is considered safe for use in cosmetics by major regulatory bodies, but it is not biodegradable.
- It is often used in combination with other film-formers to fine-tune the flexibility and durability of the final product.
Common questions
What is PPG-12/SMDI Copolymer in beauty products?
PPG-12/SMDI Copolymer is a synthetic ingredient that creates a thin, flexible film on your skin. This film helps other ingredients—like pigments in foundation or UV filters in sunscreen—stay in place longer and resist water and sweat. Think of it like a clear, invisible seal that keeps your makeup from sliding off. It's commonly found in long-wear and waterproof products.
What does PPG-12/SMDI Copolymer do in a beauty product?
When applied, the copolymer dries down to form a continuous, water-resistant film. This film physically locks in other ingredients, reducing transfer, smudging, and fading. It also helps control the viscosity of the product, making it easier to apply evenly.
Is PPG-12/SMDI Copolymer safe for most people?
PPG-12/SMDI Copolymer is considered safe for topical use at typical concentrations. It has low irritation and comedogenic potential. However, individuals with very sensitive or dry skin may find the film-forming effect uncomfortable.
Who should be careful with PPG-12/SMDI Copolymer?
Individuals with very dry or dehydrated skin 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.