S-Allylcysteine

INCI: S-ALLYLCYSTEINE

CAS Number
21593-77-1
Function
Bleaching (skin lightening), Antioxidant
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes GRAS as food substance (FEMA No. 4322); FDA UNII: 81R3X99M15; cosmetic use under general safety

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

ℹ️ Light sensitive — formulations require appropriate packaging/stabilization . NF-κB suppression activity relevant for anti-inflammatory claims

⚠️
Concern Level: Low

Regulatory Flags

fda_food_additive

Frequently Asked Questions

Is S-Allylcysteine safe in cosmetics?

ℹ️ Light sensitive — formulations require appropriate packaging/stabilization . NF-κB suppression activity relevant for anti-inflammatory claims The EU classifies S-Allylcysteine as "permitted". Safety rating: GOOD.

Is S-Allylcysteine allowed in the EU?

S-Allylcysteine EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does S-Allylcysteine do in cosmetics?

S-Allylcysteine functions as: Bleaching (skin lightening), Antioxidant. It is classified as a cosmetic ingredient in our database. CAS number: 21593-77-1.

What is the Margin of Safety for S-Allylcysteine?

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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