Ingredient review
Distearate-100 IPDI
INCI: DISTEARETH-100 IPDI
A synthetic polymer that helps products stay put and resist water, but offers no active skincare benefit.
In plain English
Distearate-100 IPDI is a man-made ingredient that forms a thin, flexible film on your skin. Think of it like a clear, breathable plastic wrap that helps makeup or sunscreen stay in place longer and resist sweat or water. It doesn't moisturize or treat your skin—it's purely a texture and performance helper.
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
Distearate-100 IPDI 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 Distearate-100 IPDI.
- 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 created by reacting distearyl alcohol with isophorone diisocyanate (IPDI). It belongs to a class of ingredients called polyurethanes, which are widely used in cosmetics for their film-forming and water-resistant properties.
How it works
When applied to the skin, the ingredient's molecules link together as the product dries, forming a continuous, flexible film. This film acts as a barrier that locks in other ingredients, reduces transfer (e.g., makeup rubbing off), and improves water resistance. It also thickens the product slightly, giving it a richer feel.
Pros
Boosts wear time
Creates a flexible film that helps makeup and sunscreen stay put for hours, even in humidity or water.
Improves texture
Gives products a smooth, silky feel without greasiness, making application more pleasant.
Cons and cautions
No active benefit
Does not moisturize, soothe, or treat skin—it's purely a performance enhancer with no skincare value.
Synthetic origin
Made from petrochemicals, which may be a concern for those seeking natural or biodegradable formulations.
Best for
- Anyone wanting longer-lasting makeup or sunscreen
- People with oily skin who need transfer-resistant products
Use caution if
- Those who prefer only natural or plant-based ingredients
- Individuals with very dry or irritated skin who may find film-formers uncomfortable
Usage tips
Safety summary
Considered safe for topical use at typical concentrations. Low irritation and comedogenic risk. No known toxicity concerns from cosmetic exposure.
Research notes
Limited independent studies on this specific ingredient. Safety is inferred from broader polyurethane polymer class, which has a long history of safe use in cosmetics.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. No specific restrictions at typical use levels.
- Common uses
- Sunscreens, Waterproof makeup, Long-wear foundations
- Environmental note
- As a synthetic polymer, it is not biodegradable and may contribute to microplastic concerns if washed off into waterways.
Good to know
- Often listed near the end of ingredient lists because it's used in small amounts.
- Commonly found in 'waterproof' or 'long-wear' labeled products.
Common questions
What is Distearate-100 IPDI in beauty products?
Distearate-100 IPDI is a man-made ingredient that forms a thin, flexible film on your skin. Think of it like a clear, breathable plastic wrap that helps makeup or sunscreen stay in place longer and resist sweat or water. It doesn't moisturize or treat your skin—it's purely a texture and performance helper.
What does Distearate-100 IPDI do in a beauty product?
When applied to the skin, the ingredient's molecules link together as the product dries, forming a continuous, flexible film. This film acts as a barrier that locks in other ingredients, reduces transfer (e.g., makeup rubbing off), and improves water resistance. It also thickens the product slightly, giving it a richer feel.
Is Distearate-100 IPDI safe for most people?
Considered safe for topical use at typical concentrations. Low irritation and comedogenic risk. No known toxicity concerns from cosmetic exposure.
Who should be careful with Distearate-100 IPDI?
Those who prefer only natural or plant-based ingredients Individuals with very dry or irritated 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.