Cosmetic ingredient

TRIS(TETRAMETHYLHYDROXYPIPERIDINOL) CITRATE

TRIS(TETRAMETHYLHYDROXYPIPERIDINOL) CITRATE is a synthetic substance made by combining citric acid with three tetramethylhydroxypiperidinol units. The result is an organic salt, rather than an oil, a plant extract, or citric acid used on its own.

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CAS number
220410-74-2
EC number
429-370-5
Chemical name
4-Piperidinol, 1-Hydroxy-2,2,6,6-Tetramethyl -, 2-Hydroxy-1,2,3-Propanetricarboxylate (3:1) (salt)

TRIS(TETRAMETHYLHYDROXYPIPERIDINOL) CITRATE: what it is

TRIS(TETRAMETHYLHYDROXYPIPERIDINOL) CITRATE is a synthetic substance made by combining citric acid with three tetramethylhydroxypiperidinol units. The result is an organic salt, rather than an oil, a plant extract, or citric acid used on its own.

The “citrate” part of the name refers to the citric-acid portion of that salt, while the piperidinol units give the ingredient a structure very different from an ordinary fruit-derived citrate. For that reason, a name that sounds citrus-related does not by itself explain its role in a cosmetic product.

TRIS(TETRAMETHYLHYDROXYPIPERIDINOL) CITRATE: what it does in cosmetics

In cosmetics, TRIS(TETRAMETHYLHYDROXYPIPERIDINOL) CITRATE is used as a UV absorber. In practical terms, it absorbs some of the ultraviolet radiation reaching the product itself, helping reduce light-driven changes in a formula over its period of use.

That purpose relates to the cosmetic product’s stability, not to a claim of treating skin or hair. The plausible benefit is helping preserve characteristics of a formula exposed to light; by itself, this role is not the same as a sun-protection claim for the person using the product.

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