Sulfonated Keratin

INCI: SULFONATED KERATIN

CAS Number
68238-35-7
Function
Hair conditioning, Hair fixative, Skin conditioning
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted for cosmetic use; no specific restrictions

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Animal-derived (typically wool/feather keratin) โ€” not eligible for vegan claims; BSE/TSE assessment required if bovine-sourced; CIR has reviewed hydrolyzed keratins generally as safe at reported concentrations; sulfonation process should be verified for residual sulfonate levels

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Concern Level: Low

Frequently Asked Questions

Is Sulfonated Keratin safe in cosmetics?

Animal-derived (typically wool/feather keratin) โ€” not eligible for vegan claims; BSE/TSE assessment required if bovine-sourced; CIR has reviewed hydrolyzed keratins generally as safe at reported concentrations; sulfonation process should be verified for residual sulfonate levels The EU classifies Sulfonated Keratin as "permitted". Safety rating: GOOD.

Is Sulfonated Keratin allowed in the EU?

Sulfonated Keratin EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Sulfonated Keratin do in cosmetics?

Sulfonated Keratin functions as: Hair conditioning, Hair fixative, Skin conditioning. It is classified as a cosmetic ingredient in our database. CAS number: 68238-35-7.

What is the Margin of Safety for Sulfonated Keratin?

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.

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