Tolunesulfonamide/Formaldehyde Resin-80

AKA: Tosylamide/formaldehyde resin 80, TSF resin 80

Allergen Warning

⚠️ Formaldehyde

Plant-Derived Synthetic

Occlusive

Not Clean

Tolunesulfonamide/Formaldehyde Resin-80 is a cosmetic ingredient. Assessed as safe by the CIR.

Functions

Film Forming

Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.

Traditional Use

A cosmetic resin formulation developed in the 20th century with an 80% resin concentration. Designed for use in nail polish to provide enhanced film-forming and adhesive properties.

EWG

CIR

Safe as used

Pregnancy

—

Restricted By

Credo Beauty Sephora Clean at Sephora Target Clean Whole Foods Premium Body Care The Detox Market Ulta Conscious Beauty Beauty Heroes CVS Clean Beauty MADE SAFE EWG VERIFIED

CIR Safety Findings

Not a Sensitizer

medical-approval

all-shades-safe

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Skin Types

●all-skin-types

Best For

General

The paper trail

🔬Peer-reviewednone on file

⚖️Regulatory0 listings

🛡️Safety-assessed1 review →

Counts, not a verdict. A listing isn't a study. The trail, you decide.

Verified Jun 2026

Data: CosIng · EWG · CIR