A chitosan derivative made with propylene oxide, used as a film former.
What it is
Hydroxypropyl chitosan is the product of the reaction of chitosan with propylene oxide (methyloxirane), which adds hydroxypropyl groups. Chitosan is a polysaccharide obtained from chitin. CosIng lists it as a film-forming 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 reveal whether the chitosan comes from crustacean shells or from fungi, or the degree of substitution.
Functions
- Film forming
- Producing (upon application) a continuous film on the skin, hair or nails.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.