Toluenesulfonamide/Formaldehyde Resin

AKA: Tosylamide/formaldehyde resin, TSF resin, Toluene sulfonamide formaldehyde

Plant-Derived Synthetic

Occlusive

Not Clean

OriginSynthesized from toluene and formaldehyde, combined with sulfonamide compounds to form a polymer resin. Produced through condensation polymerization of toluenesulfonamide with formaldehyde under controlled heat and catalytic conditions.

Toluenesulfonamide/Formaldehyde Resin is a cosmetic ingredient. Assessed as safe by the CIR.

CAS #

25068-38-6

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Allergen Warning

⚠️ Formaldehyde

Functions

Film Forming

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

Fights Acne

Helps reduce acne breakouts

Potentially supports skin clarity

Assists in controlling excess oil

The paper trail

🔬Peer-reviewed1 paper →

⚖️Regulatory0 listings

🛡️Safety-assessed1 review →

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

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

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Verified Jun 2026

Data: CosIng · EWG · CIR