Ingredient review
DMPA/PPG-36/SMDI Copolymer
INCI: DMPA/PPG-36/SMDI Copolymer
A synthetic polymer that helps products stay put and resist water, but may feel heavy on some skin types.
In plain English
This is a man-made plastic-like ingredient that forms a thin, flexible film on your skin or hair. It helps makeup last longer, makes sunscreen more water-resistant, and gives hair products hold. Think of it as a clear, invisible shield that bends with your movements so it doesn't crack or flake.
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
DMPA/PPG-36/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 DMPA/PPG-36/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 copolymer made from dimethylolpropionic acid (DMPA), polypropylene glycol (PPG-36), and saturated methylene diphenyl diisocyanate (SMDI). It belongs to the polyurethane family and is engineered to create durable, flexible films.
How it works
When applied, the copolymer molecules link together as the solvent (often water or alcohol) evaporates, forming a continuous, flexible film. This film adheres to the skin or hair surface, locking in other ingredients and providing resistance to water, sweat, and rubbing.
Pros
Excellent water resistance
Helps sunscreen and makeup stay effective even when you sweat or swim, reducing the need for frequent reapplication.
Flexible film
Unlike some older polymers, this one bends with your skin's natural movements, so it won't crack or feel stiff throughout the day.
Cons and cautions
Can feel heavy
On oily or combination skin, the film may feel thick or sticky, potentially contributing to a greasy sensation or clogged pores.
Requires double cleansing
Because it forms a strong water-resistant barrier, you may need an oil-based cleanser followed by a water-based one to remove it completely.
Best for
- People who need long-lasting, water-resistant makeup or sunscreen
- Those with normal to dry skin looking for a protective film
Use caution if
- Individuals with very oily or acne-prone skin who may find film-formers too heavy
Usage tips
Safety summary
DMPA/PPG-36/SMDI Copolymer is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, though individuals with very sensitive or oily skin may want to patch-test first.
Research notes
Safety assessments by the Cosmetic Ingredient Review (CIR) panel have found polyurethane copolymers like this one to be safe when formulated appropriately. Most data come from manufacturer studies and regulatory reviews rather than independent clinical trials.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics globally, including by the EU Cosmetics Regulation and the US FDA. No specific concentration limits are set, but formulators follow good manufacturing practices.
- Common uses
- Sunscreens, Waterproof mascaras, Long-wear foundations, Hair styling products
- Environmental note
- As a synthetic polymer, it is not readily biodegradable. However, it is not classified as a microplastic because it is used in film-forming applications rather than as solid particles.
Good to know
- This polymer is often used in 'clean' beauty formulations as a silicone alternative for water resistance.
- It is not considered a microplastic because it forms a film rather than solid particles.
Common questions
What is DMPA/PPG-36/SMDI Copolymer in beauty products?
This is a man-made plastic-like ingredient that forms a thin, flexible film on your skin or hair. It helps makeup last longer, makes sunscreen more water-resistant, and gives hair products hold. Think of it as a clear, invisible shield that bends with your movements so it doesn't crack or flake.
What does DMPA/PPG-36/SMDI Copolymer do in a beauty product?
When applied, the copolymer molecules link together as the solvent (often water or alcohol) evaporates, forming a continuous, flexible film. This film adheres to the skin or hair surface, locking in other ingredients and providing resistance to water, sweat, and rubbing.
Is DMPA/PPG-36/SMDI Copolymer safe for most people?
DMPA/PPG-36/SMDI Copolymer is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, though individuals with very sensitive or oily skin may want to patch-test first.
Who should be careful with DMPA/PPG-36/SMDI Copolymer?
Individuals with very oily or acne-prone skin who may find film-formers too heavy
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.