Cysteinyl Tripeptide‑35

INCI: CYSTEINYL TRIPEPTIDE-35

CAS Number
Not publicly standardized; proprietary cosmetic peptide, typically supplied under trade name with internal CAS‑like identifier
Function
Chelating agent, skin protectant, anti-sebum, antioxidant
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes No specific FDA restriction; treated as cosmetic peptide; claims such as wrinkle reduction remain cosmetic if confined to appearance.

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Quality and purity (residual solvents, TFA, counter-ions) must be tightly controlled; avoid drug-like mechanistic claims such as alters gene expression in labeling.

⚠️
Concern Level: Low

Frequently Asked Questions

Is Cysteinyl Tripeptide‑35 safe in cosmetics?

Quality and purity (residual solvents, TFA, counter-ions) must be tightly controlled; avoid drug-like mechanistic claims such as alters gene expression in labeling. The EU classifies Cysteinyl Tripeptide‑35 as "permitted". Safety rating: GOOD.

Is Cysteinyl Tripeptide‑35 allowed in the EU?

Cysteinyl Tripeptide‑35 EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Cysteinyl Tripeptide‑35 do in cosmetics?

Cysteinyl Tripeptide‑35 functions as: Chelating agent, skin protectant, anti-sebum, antioxidant. It is classified as a cosmetic ingredient in our database. CAS number: Not publicly standardized; proprietary cosmetic peptide, typically supplied under trade name with internal CAS‑like identifier.

What is the Margin of Safety for Cysteinyl Tripeptide‑35?

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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