Cysteamine HCl

INCI: CYSTEAMINE HCL

CAS Number
156-57-0
Function
Skin Brightening
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Status permitted

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

Cysteamine HCl has a good safety profile within approved limits, with restricted use in the EU subject to Annex III concentration limits.

โš ๏ธ
Concern Level: Moderate

Regulatory Flags

EU Restricted

Frequently Asked Questions

Is Cysteamine HCl safe in cosmetics?

Cysteamine HCl has a good safety profile within approved limits, with restricted use in the EU subject to Annex III concentration limits. The EU classifies Cysteamine HCl as "restricted". Safety rating: GOOD.

Is Cysteamine HCl allowed in the EU?

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

What does Cysteamine HCl do in cosmetics?

Cysteamine HCl functions as: Skin Brightening. It is classified as a Cosmetic Ingredient in our database. CAS number: 156-57-0.

What is the Margin of Safety for Cysteamine HCl?

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.

๐Ÿ“ฑ

Is Cysteamine HCl in Your Products?

Scan any product label with Piro โ€” our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.

Try Piro Free โ†’

Analyze Your Full Ingredient List

Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for Cysteamine HCl in your formulation.