A substituted derivative of the amino acid methionine, used as a skin-protecting ingredient.
What it is
Methylthiopropylamido acetyl methionine is, according to CosIng, a substituted amino acid: N-acetylmethionine in which the carboxyl group forms an amide with a methylthiopropylamine group. CosIng lists it as a skin-protecting ingredient.
Where it is used
Appears on the ingredient lists of a small number of hair care and skin care products.
Limits of interpretation
The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.
The label does not show the amount used.
Functions
- Skin protecting
- Helping to avoid harmful effects to the skin from external factors.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.