Magnesium Thioglycolate

INCI: MAGNESIUM THIOGLYCOLATE (SYNONYM: MAGNESIUM MERCAPTOACETATE)

CAS Number
63592-16-5
Function
Depilatory, hair waving or straightening, reducing agent
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
EU Max Conc. 5%
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Allowed - permitted in hair-waving, straightening, and depilatory products; CIR assessed

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Skin and eye irritation/sensitization; strong reducing agent that breaks disulfide bonds; allergic contact dermatitis possible; strict pH and concentration compliance essential; professional-use products require higher safety precautions. Synthetic origin; the magnesium salt of thioglycolic acid (mercaptoacetic acid); breaks keratin disulfide bonds for hair restructuring or removal

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Concern Level: Moderate

Regulatory Flags

potential-allergen

Frequently Asked Questions

Is Magnesium Thioglycolate safe in cosmetics?

Skin and eye irritation/sensitization; strong reducing agent that breaks disulfide bonds; allergic contact dermatitis possible; strict pH and concentration compliance essential; professional-use products require higher safety precautions. Synthetic origin; the magnesium salt of thioglycolic acid (mercaptoacetic acid); breaks keratin disulfide bonds for hair restructuring or removal The EU classifies Magnesium Thioglycolate as "restricted". Safety rating: MODERATE.

Is Magnesium Thioglycolate allowed in the EU?

Magnesium Thioglycolate EU regulatory status: restricted. Maximum allowed concentration: 5%. This is based on EU Regulation 1223/2009 and its amendments.

What does Magnesium Thioglycolate do in cosmetics?

Magnesium Thioglycolate functions as: Depilatory, hair waving or straightening, reducing agent. It is classified as a cosmetic ingredient in our database. CAS number: 63592-16-5.

What is the Margin of Safety for Magnesium 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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