Butyl Thioglycolate

INCI: BUTYL THIOGLYCOLATE

CAS Number
1190-69-0
Function
Depilatory agent; hair waving/straightening agent
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
EU Max Conc. 8%
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Adequate when used within Annex III limits; SCCS opinion supports current restrictions

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
high
Sensitization
high

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Restricted use with mandatory label warnings including alkali content, eye contact avoidance, blindness risk, and child safety precautions; strong thiol odor with significant eye irritation risk; unsuitable for consumer eyelash applications; pH monitoring required in finished product.

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Concern Level: High

Frequently Asked Questions

Is Butyl Thioglycolate safe in cosmetics?

Restricted use with mandatory label warnings including alkali content, eye contact avoidance, blindness risk, and child safety precautions; strong thiol odor with significant eye irritation risk; unsuitable for consumer eyelash applications; pH monitoring required in finished product. The EU classifies Butyl Thioglycolate as "restricted". Safety rating: MODERATE.

Is Butyl Thioglycolate allowed in the EU?

Butyl Thioglycolate EU regulatory status: restricted. Maximum allowed concentration: 8%. This is based on EU Regulation 1223/2009 and its amendments.

What does Butyl Thioglycolate do in cosmetics?

Butyl Thioglycolate functions as: Depilatory agent; hair waving/straightening agent. It is classified as a cosmetic ingredient in our database. CAS number: 1190-69-0.

What is the Margin of Safety for Butyl Thioglycolate?

not established 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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