A synthetic acrylic copolymer, used as a film former and hair fixative.
What it is
Acrylates/t-butylacrylamide copolymer is a synthetic polymer of tert-butyl acrylamide and one or more monomers of acrylic acid, methacrylic acid or their simple esters. CosIng lists it as a film-forming and hair-fixing ingredient.
Where it is used
Found in hair styling products such as hairsprays and gels, and in sun care 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 exact monomer composition.
Functions
- 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.

