Ingredient review
HDI/PPG/Polycaprolactone Crosspolymer
INCI: HDI/PPG/Polycaprolactone Crosspolymer
A gentle synthetic film-former that helps makeup and skincare products feel smooth, last longer, and resist water without clogging pores.
In plain English
This is a man-made polymer (a type of plastic-like material) that forms a thin, flexible, and breathable film on your skin. It's used in many cosmetics to help them spread smoothly, feel silky, and stay put longer. Think of it as a gentle, invisible shield that helps your makeup or sunscreen resist sweat and water without feeling heavy or sticky.
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
HDI/PPG/Polycaprolactone Crosspolymer 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 HDI/PPG/Polycaprolactone Crosspolymer.
- 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 crosslinked polymer made from hexamethylene diisocyanate (HDI), polypropylene glycol (PPG), and polycaprolactone. It is manufactured as tiny, soft spheres that create a smooth, velvety texture when applied to skin.
How it works
When applied, the polymer particles spread into a thin, even film that adheres to the skin's surface. This film helps other ingredients (like pigments or UV filters) stay in place, reduces the appearance of fine lines by filling in uneven texture, and provides a water-resistant barrier that doesn't feel heavy or occlusive.
Pros
Silky, lightweight feel
Creates a velvety, smooth texture on skin that helps products glide on easily and reduces the sticky or greasy feel of some formulas.
Improves wear and water resistance
Forms a flexible film that helps makeup and sunscreen resist sweat, humidity, and water, so they stay effective longer throughout the day.
Cons and cautions
Synthetic origin
Made from petrochemical-derived materials, so it may not be suitable for those seeking fully natural or biodegradable cosmetic ingredients.
Limited skin benefit beyond aesthetics
Does not actively hydrate, nourish, or repair skin; its role is purely textural and functional in the formula.
Best for
- Anyone wanting longer-lasting makeup or sunscreen
- People with normal to oily skin who prefer a silky, non-greasy finish
Use caution if
- Those strictly avoiding all synthetic ingredients
- Individuals with known allergy to polyurethane compounds (extremely rare)
Usage tips
Safety summary
Considered safe for use in cosmetics at typical concentrations. The Cosmetic Ingredient Review (CIR) panel has evaluated similar polyurethane polymers and found them safe when formulated to be non-irritating. Allergic reactions are extremely rare.
Research notes
Safety data is based on analog studies of similar polyurethane crosspolymers. No specific human clinical trials on this exact ingredient were found, but it has a long history of safe use in cosmetics with no significant adverse event reports.
Common label clues
- Typical concentration
- 1% to 5%
- Regulatory status
- Approved for use in cosmetics globally, including by the U.S. FDA and EU CosIng database. No concentration restrictions are specified.
- Common uses
- Primers, Foundations, Sunscreens, Moisturizers
- Environmental note
- As a synthetic polymer, it is not biodegradable and may contribute to microplastic pollution if rinsed off. However, it is typically used in leave-on products, reducing waterway exposure.
Good to know
- Often used in combination with silicones for an even silkier feel.
- The polycaprolactone component is biodegradable, but the overall polymer is not considered readily biodegradable.
Common questions
What is HDI/PPG/Polycaprolactone Crosspolymer in beauty products?
This is a man-made polymer (a type of plastic-like material) that forms a thin, flexible, and breathable film on your skin. It's used in many cosmetics to help them spread smoothly, feel silky, and stay put longer. Think of it as a gentle, invisible shield that helps your makeup or sunscreen resist sweat and water without feeling heavy or sticky.
What does HDI/PPG/Polycaprolactone Crosspolymer do in a beauty product?
When applied, the polymer particles spread into a thin, even film that adheres to the skin's surface. This film helps other ingredients (like pigments or UV filters) stay in place, reduces the appearance of fine lines by filling in uneven texture, and provides a water-resistant barrier that doesn't feel heavy or occlusive.
Is HDI/PPG/Polycaprolactone Crosspolymer safe for most people?
Considered safe for use in cosmetics at typical concentrations. The Cosmetic Ingredient Review (CIR) panel has evaluated similar polyurethane polymers and found them safe when formulated to be non-irritating. Allergic reactions are extremely rare.
Who should be careful with HDI/PPG/Polycaprolactone Crosspolymer?
Those strictly avoiding all synthetic ingredients Individuals with known allergy to polyurethane compounds (extremely 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.