A cationically modified keratin hydrolysate used for hair and skin conditioning.
What it is
Steardimonium hydroxypropyl hydrolyzed keratin is hydrolysed keratin bound to a quaternary ammonium group carrying a stearyl (C18) chain and two methyl groups, with chloride as the counter-ion. Keratin is the structural protein of hair, wool, feathers and horn. CosIng lists it as an antistatic, hair-conditioning and skin-conditioning ingredient.
Where it is used
Found in a small number of 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 INCI name does not reveal the source of the keratin.
Functions
- Antistatic
- Preventing and/or reducing static electricity by neutralising electrical charge on surfaces.
- 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.
- Skin conditioning
- Maintaining the skin in good condition.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.

