Polyurethane-41
AKA “Polyurethane polymer, Film-forming agent
Synthetic
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Ingredient Facts
Polyurethane-41
AKA: Polyurethane polymer, Film-forming agent
Synthetic · Film Forming | Hair Conditioning | Skin Protecting · EWG: 4
Plant-Derived
Occlusive
Skin Conditioner
Barrier Support
Hair Care
Synthetic
Clean
A lightweight conditioning polymer that creates a protective layer on skin and hair, helping to lock in moisture and improve softness while adding a smooth, polished finish.
Form
Powder
Plant-Derived
Synthetic. Synthesized from polyols and isocyanates, members of the urethane chemical family used in polymer production. Produced through step-growth polymerization, where isocyanates react with polyols to form long-chain urethane linkages.
Function
Film Forming | Hair Conditioning | Skin Protecting
Benefits
Nourishes & Protects
Traditional Use
Synthetic polymer developed in the mid-20th century. Used in cosmetics as a film-forming and conditioning agent in hair and skin products.
Skin Types
all-skin-types
Best For
Target
General
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
EWG Score4
CIR Safety Findings
medical-approval, all-shades-safe, Not a Sensitizer
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR