Hydrolysed silk protein acylated with isostearic acid, listed as a skin-conditioning ingredient.
What it is
Isostearoyl hydrolyzed silk is the condensation product of isostearic acid chloride and hydrolysed silk, giving silk protein fragments bound to a branched C18 fatty acid chain. CosIng lists it as a skin-conditioning ingredient.
Where it is used
Appears on the ingredient lists of a small number of 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 show the average size of the protein fragments.
Functions
- 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.