Xylene Sulfonic Acid

AKA: GDJZZWYLFXAGFH-UHFFFAOYSA-N

Synthetic

Cleanser

Acid

Not Clean

Xylene Sulfonic Acid is safe as cosmetic ingredient in the present practice of use and concentration as described in this safety assessment, when formulated to be nonirritating

Formula

C8H12O3S

Mol. Weight

188.25

CAS #

25321-41-9

Form

Liquid

State

Solid

Functions

Cleansing

Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.

Hydrotrope

Cleansing Surfactant

Surfactant Hydrotrope

Lifts away dirt and oil

Improves ingredient solubility

Traditional Use

Synthetic ingredient developed in the 20th century for industrial chemical applications. Adopted in cosmetics as a chelating agent and pH adjuster in modern formulations with no significant historical use.

EWG

CIR

Safe as used

Pregnancy

Caution

CIR Safety Findings

Not an Irritant

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

Pregnancy & Breastfeeding Safe

Caution

The paper trail

🔬Peer-reviewednone on file

⚖️Regulatory1 listing →

🛡️Safety-assessed2 reviews →

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

Verified Jun 2026

Data: PubChem · CosIng · EWG · CIR