Moderate Cosmetic Ingredient NOAEL Data

Thioglycerin

INCI: THIOGLYCERIN

CAS Number
96-27-5
Function
Depilatory, Hair Waving/Straightening, Keratolytic, Reducing Agent
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
๐Ÿ‡บ๐Ÿ‡ธ US Status restricted
US Notes Permitted; not specifically restricted; subject to general safety requirements

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.

Toxicological Studies

10 study endpoints found for Thioglycerin. 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 >=360 mg/kg bw/day dermal code:3543 dermal REACH
NOAEL >=180 mg/kg bw/day dermal rat dermal REACH
NOAEL 50 mg/kg bw/day oral rat oral REACH
LOAEL 200 mg/kg bw/day oral rat oral REACH
NOEL 1000 ppm oral rat oral REACH
NOAEL 3 other oral rat oral REACH
NOAEL 1000 mg/kg bw/day oral rat oral REACH
LOAEL 60 mg/kg bw/day oral rat oral REACH
LOAEL 80 mg/kg bw/day oral rat oral REACH
NOEL 20 mg/kg bw/day oral rat oral REACH

Expert Verdict

Skin/eye irritant at high concentrations; strong thiol odor; must comply with Annex III restrictions including mandatory label warnings

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Concern Level: Moderate

Frequently Asked Questions

Is Thioglycerin safe in cosmetics?

Skin/eye irritant at high concentrations; strong thiol odor; must comply with Annex III restrictions including mandatory label warnings The EU classifies Thioglycerin as "restricted". Safety rating: MODERATE. 10 toxicological study endpoint(s) are available in our database.

Is Thioglycerin allowed in the EU?

Thioglycerin EU regulatory status: restricted. This is based on EU Regulation 1223/2009 and its amendments.

What does Thioglycerin do in cosmetics?

Thioglycerin functions as: Depilatory, Hair Waving/Straightening, Keratolytic, Reducing Agent. It is classified as a cosmetic ingredient in our database. CAS number: 96-27-5.

What is the Margin of Safety for Thioglycerin?

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 Thioglycerin?

The NOAEL (No Observed Adverse Effect Level) for Thioglycerin is >=360 mg/kg bw/day based on a dermal study via dermal route in code:3543. A total of 10 study endpoints are available. Source: REACH.

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