Polydiethyleneglycol Adipate/Ipdi Copolymer
What is Polydiethyleneglycol Adipate/Ipdi Copolymer?
Polydiethyleneglycol Adipate/IPDI Copolymer is a synthetic polyurethane copolymer produced by reacting polydiethyleneglycol adipate—a polyester from adipic acid and diethylene glycol—with isophorone diisocyanate, an aliphatic diisocyanate linker. Commonly found in decorative cosmetics like lip products, mascaras, eyeliners, and nail coatings, as well as sunscreens and hair fixatives, it serves primarily as a film former. Upon application and solvent evaporation, it creates a thin, elastic, continuous sheath on skin, hair, or nails. This sheath improves product adherence, offering resistance to moisture, friction, and smudging while imparting flexibility to prevent cracking. Its lightweight profile supports smooth application and extended wear without heaviness.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Creates a durable film that extends makeup or sunscreen wear through water and rub resistance.
Enhances product hold and shine on hair or nails without stiffness.
Supports non-comedogenic formulas, allowing use on facial skin.
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Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| — | Those with rare diisocyanate sensitivities. |
| — | Users avoiding synthetic polymers in routines. |
| — | Individuals prone to contact reactions from film formers. |
Safety Notes
- Low hazard rating with minimal irritation risk in cosmetics.
- Non-comedogenic, unlikely to block pores.
Frequently Asked Questions about Polydiethyleneglycol Adipate/Ipdi Copolymer
What does this ingredient do in products?
It forms a flexible film to boost wear, water resistance, and hold in makeup, sunscreens, and hair products.
Is it safe for sensitive skin?
Generally low irritation potential, suitable for most, but patch test if concerned about polymers.
Does it clog pores?
No, it has a comedogenic rating of 0, safe for facial use.