INCI name

ACETYL HYDROXYPROLINE

Acetyl hydroxyproline

An acetylated derivative of the amino acid hydroxyproline, used as a conditioning and humectant ingredient.

What it is

Acetyl hydroxyproline is N-acetyl-4-hydroxy-L-proline, a derivative of hydroxyproline, an amino acid that is abundant in collagen. CosIng lists it as an emollient, hair-conditioning, humectant, skin-conditioning and skin-protecting ingredient.

Where it is used

Found in creams, serums, lotions and some hair 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 conditioning – emollient
Acting as lubricants on the skin surface providing the skin with a soft and smooth appearance.
Hair conditioning
Enhancing the appearance and feel of hair. Leaving the hair easy to comb, supple, soft and shiny and/or imparting volume, lightness, gloss, texture, etc.
Humectant
Retaining and/or preserving the moisture in a product during use.
Skin conditioning
Maintaining the skin in good condition.
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.

Products with this ingredient (11)

Check a full ingredient list