Moderate Cosmetic Ingredient NOAEL Data

Glyceryl Thioglycolate

INCI: GLYCERYL THIOGLYCOLATE

CAS Number
30618-84-9
Function
Hair waving/straightening agent (thioglycolic acid ester)
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted โ€” no specific CFR restriction; FDA monitors under MoCRA general provisions

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

3 study endpoints found for Glyceryl Thioglycolate. NOAEL (No Observed Adverse Effect Level) values are used to calculate the Margin of Safety per SCCS methodology.

Endpoint Value Route Species Study Type Source
NOAEL 2 other dermal code:3484 dermal REACH
NOAEL 50 mg/kg bw/day oral rat oral REACH
LOAEL 60 mg/kg bw/day oral rat oral REACH

Expert Verdict

Prohibited in EU since July 2013 on eyelashes; permitted in US with monitoring. Mandatory professional-use labeling at >8%; sensitization and irritation risk increase with prolonged contact and alkaline pH. Patch testing recommended.

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Concern Level: High

Regulatory Flags

potential-allergen

Frequently Asked Questions

Is Glyceryl Thioglycolate safe in cosmetics?

Prohibited in EU since July 2013 on eyelashes; permitted in US with monitoring. Mandatory professional-use labeling at >8%; sensitization and irritation risk increase with prolonged contact and alkaline pH. Patch testing recommended. The EU classifies Glyceryl Thioglycolate as "prohibited". Safety rating: MODERATE. 3 toxicological study endpoint(s) are available in our database.

Is Glyceryl Thioglycolate allowed in the EU?

Glyceryl Thioglycolate EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.

What does Glyceryl Thioglycolate do in cosmetics?

Glyceryl Thioglycolate functions as: Hair waving/straightening agent (thioglycolic acid ester). It is classified as a cosmetic ingredient in our database. CAS number: 30618-84-9.

What is the Margin of Safety for Glyceryl Thioglycolate?

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.

What is the NOAEL for Glyceryl Thioglycolate?

The NOAEL (No Observed Adverse Effect Level) for Glyceryl Thioglycolate is 2 other based on a dermal study via dermal route in code:3484. A total of 3 study endpoints are available. Source: REACH.

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