Ac
Acetyl Methionine
Acetyl Methionine
The amino acid methionine with an acetyl group added, used as a skin conditioner.
What it does
It’s methionine, an amino acid, with an acetyl group added. The EU lists it as a skin conditioner.
The EU’s ingredient database lists it as a skin conditioner, its general term for an ingredient that keeps skin in good condition.European Commission, CosIng (© European Union, CC BY 4.0) · uses put in plain words by Drop ↗
The evidence, graded
expert consensusUS safety reviewers (2017) looked at 115 related ingredients made from amino acids. They mainly condition skin and hair and act as cleansers. The reviewers judged them safe at the amounts and in the ways cosmetics use them, as long as the product is made not to irritate. Their list or their index names this one among them.Burnett 2017 · International Journal of Toxicology ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
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