A synthetic acrylic copolymer used as a film former and binder.
What it is
Polyacrylate-21 is, according to CosIng, a copolymer of 2-ethylhexyl acrylate, butyl methacrylate, methacrylic acid, methyl methacrylate, hydroxypropyl methacrylate and styrene. CosIng lists it as a binding, film-forming and hair-fixing ingredient.
Where it is used
Found in a small number of products, such as makeup and hair styling 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 or the ratio of the monomers.
Functions
- Binding
- Providing adhesive properties during and after compression in cosmetic tablets and/or cakes.
- Film forming
- Producing (upon application) a continuous film on the skin, hair or nails.
- Hair fixing
- Permitting physical control of hair style.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.