Thiosalicylic Acid

INCI: THIOSALICYLIC ACID

CAS Number
147-93-3
Function
Antioxidant, Keratolytic, Reducing Agent
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted; general cosmetic ingredient

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
moderate
Sensitization
moderate

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Metal chelation properties; potential cross-sensitivity with salicylic acid family; skin irritant at higher concentrations; used in exfoliating and curling products

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Concern Level: Moderate

Frequently Asked Questions

Is Thiosalicylic Acid safe in cosmetics?

Metal chelation properties; potential cross-sensitivity with salicylic acid family; skin irritant at higher concentrations; used in exfoliating and curling products The EU classifies Thiosalicylic Acid as "permitted". Safety rating: MODERATE.

Is Thiosalicylic Acid allowed in the EU?

Thiosalicylic Acid EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Thiosalicylic Acid do in cosmetics?

Thiosalicylic Acid functions as: Antioxidant, Keratolytic, Reducing Agent. It is classified as a cosmetic ingredient in our database. CAS number: 147-93-3.

What is the Margin of Safety for Thiosalicylic Acid?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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