Glyoxyloyl Cysteine

CAS Number
Not individually assigned in major registries
Function
Hair waving or straightening
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted โ€” no specific restrictions

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Glyoxyloyl cysteine shares class concerns with glyoxyloyl carbocysteine, with potential thermal release of formaldehyde and glyoxylic acid; no independent SCCS or CIR safety opinion available; ANSES derivative warning applies.

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Concern Level: Moderate

Frequently Asked Questions

Is Glyoxyloyl Cysteine safe in cosmetics?

Glyoxyloyl cysteine shares class concerns with glyoxyloyl carbocysteine, with potential thermal release of formaldehyde and glyoxylic acid; no independent SCCS or CIR safety opinion available; ANSES derivative warning applies. The EU classifies Glyoxyloyl Cysteine as "prohibited". Safety rating: MODERATE.

Is Glyoxyloyl Cysteine allowed in the EU?

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

What does Glyoxyloyl Cysteine do in cosmetics?

Glyoxyloyl Cysteine functions as: Hair waving or straightening. It is classified as a cosmetic ingredient in our database. CAS number: Not individually assigned in major registries.

What is the Margin of Safety for Glyoxyloyl Cysteine?

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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