Ingredient review
Glycereth-7/IPDI Copolymer
INCI: GLYCERETH-7/IPDI COPOLYMER
A gentle film-forming polymer that helps products stay put and resist water without feeling heavy or sticky.
In plain English
This ingredient is a synthetic polymer made by combining glycerin-derived molecules with IPDI (a type of isocyanate). In skincare, it forms a thin, flexible film on the skin's surface. This film helps other ingredients stay in place longer and makes products more water-resistant. It's commonly used in sunscreens and long-wear makeup to improve durability without a tight or uncomfortable feel.
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
Glycereth-7/IPDI 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 Glycereth-7/IPDI 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
Glycereth-7/IPDI Copolymer is a synthetic polymer created by reacting glycereth-7 (a glycerin derivative) with isophorone diisocyanate (IPDI). The result is a film-forming agent that is water-dispersible and creates a flexible, breathable layer on the skin.
How it works
When applied, the copolymer forms a thin, even film over the skin. This film acts as a physical barrier that slows water loss and helps other ingredients (like UV filters or pigments) adhere better. Because it's flexible, it moves with the skin rather than cracking or flaking, making it ideal for products that need to last through sweat or water exposure.
Pros
Boosts water resistance
Helps sunscreens and makeup withstand sweat, humidity, and swimming, so you don't have to reapply as often.
Flexible and comfortable
Unlike some older film-formers, this copolymer moves with your skin, reducing the risk of a tight or mask-like feeling.
Cons and cautions
Synthetic origin
Made from petrochemical-derived materials, which may not align with natural or minimalist skincare preferences.
Potential tackiness
In high concentrations or poorly formulated products, it can leave a slightly sticky or tacky residue on the skin.
Best for
- Anyone using water-resistant sunscreen or long-wear makeup
- People with oily or combination skin who want a non-greasy finish
Use caution if
- Those who strictly avoid synthetic polymers in their skincare
Usage tips
Safety summary
Glycereth-7/IPDI Copolymer is considered safe for topical use in cosmetics. It has low irritation and comedogenic potential, making it suitable for most skin types. No significant safety concerns have been reported in the available literature.
Research notes
Research on this specific copolymer is limited, but the broader class of film-forming polymers has been well-studied for safety and efficacy. Studies show they improve water resistance and wear time without significant skin irritation.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. The Cosmetic Ingredient Review (CIR) panel has evaluated similar film-forming polymers and found them safe at typical use concentrations.
- Common uses
- Sunscreens, Water-resistant moisturizers, Long-wear makeup, Eye creams
- Environmental note
- As a synthetic polymer, it is not biodegradable. However, it is used in low concentrations and is not known to accumulate in the environment in significant amounts.
Good to know
- This copolymer is often used in combination with other film-formers to fine-tune the feel and durability of a product.
- It is considered safe for use in cosmetics by major regulatory bodies when used as intended.
Common questions
What is Glycereth-7/IPDI Copolymer in beauty products?
This ingredient is a synthetic polymer made by combining glycerin-derived molecules with IPDI (a type of isocyanate). In skincare, it forms a thin, flexible film on the skin's surface. This film helps other ingredients stay in place longer and makes products more water-resistant. It's commonly used in sunscreens and long-wear makeup to improve durability without a tight or uncomfortable feel.
What does Glycereth-7/IPDI Copolymer do in a beauty product?
When applied, the copolymer forms a thin, even film over the skin. This film acts as a physical barrier that slows water loss and helps other ingredients (like UV filters or pigments) adhere better. Because it's flexible, it moves with the skin rather than cracking or flaking, making it ideal for products that need to last through sweat or water exposure.
Is Glycereth-7/IPDI Copolymer safe for most people?
Glycereth-7/IPDI Copolymer is considered safe for topical use in cosmetics. It has low irritation and comedogenic potential, making it suitable for most skin types. No significant safety concerns have been reported in the available literature.
Who should be careful with Glycereth-7/IPDI Copolymer?
Those who strictly avoid synthetic polymers in their skincare
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.