An ester of propylene glycol and isostearic acid, used as a skin-conditioning ingredient and cleansing surfactant.
What it is
Propylene glycol isostearate is the monoester of propylene glycol and isostearic acid, a branched fatty acid with 18 carbon atoms. CosIng lists it as a skin-conditioning ingredient and cleansing surfactant.
Where it is used
Found in a small number of creams, makeup and other products containing oils.
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 commercial material can contain different isomers, which is why more than one CAS number is listed.
Functions
- Skin conditioning
- Maintaining the skin in good condition.
- Surfactant – cleansing
- Wetting body surfaces, emulsifying or solubilizing oils, and suspending soil (generally, such ingredients contribute to the foaming and lathering properties of cleansing products).
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.