Tris(Tetramethylhydroxypiperidinol) Citrate

INCI: TRIS(TETRAMETHYLHYDROXYPIPERIDINOL) CITRATE

CAS Number
220410-74-2
Function
Light Stabilizer (HALS – Hindered Amine Light Stabilizer); protects formulations from photodegradation
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Permitted; 388 formulations in 2020 VCRP data; CIR safety-assessed

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Used near eye area at up to 0.005%; does NOT function as a sunscreen active – it protects formula stability from UV, not skin

⚠️
Concern Level: Low

Regulatory Flags

ifra_fragrance

Frequently Asked Questions

Is Tris(Tetramethylhydroxypiperidinol) Citrate safe in cosmetics?

Used near eye area at up to 0.005%; does NOT function as a sunscreen active – it protects formula stability from UV, not skin The EU classifies Tris(Tetramethylhydroxypiperidinol) Citrate as "permitted". Safety rating: GOOD.

Is Tris(Tetramethylhydroxypiperidinol) Citrate allowed in the EU?

Tris(Tetramethylhydroxypiperidinol) Citrate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Tris(Tetramethylhydroxypiperidinol) Citrate do in cosmetics?

Tris(Tetramethylhydroxypiperidinol) Citrate functions as: Light Stabilizer (HALS – Hindered Amine Light Stabilizer); protects formulations from photodegradation. It is classified as a cosmetic ingredient in our database. CAS number: 220410-74-2.

What is the Margin of Safety for Tris(Tetramethylhydroxypiperidinol) Citrate?

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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