The ammonium salt of polyacrylic acid, used as a film former.
What it is
Ammonium polyacrylate is the ammonium salt of polyacrylic acid, a synthetic homopolymer of acrylic acid. CosIng lists it as a film-forming ingredient, light stabiliser and cleansing surfactant.
Where it is used
Found in a small number of products, such as skin care and makeup 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 molecular weight of the polymer.
Functions
- Film forming
- Producing (upon application) a continuous film on the skin, hair or nails.
- Light stabilizer
- Protecting the cosmetic product from deterioration effects of light.
- 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.