An ester of isostearyl alcohol and lactic acid used as an emollient.
What it is
Isostearyl lactate is the ester of isostearyl alcohol (a branched C18 alcohol) and lactic acid. CosIng lists it as an emollient and skin-conditioning ingredient.
Where it is used
Found in lipsticks, lip balms, creams and foundations.
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.
Isostearyl alcohol is a mixture of branched isomers, so the raw material is not a single compound.
Functions
- Skin conditioning – emollient
- Acting as lubricants on the skin surface providing the skin with a soft and smooth appearance.
- 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.

