A hydrogenated synthetic rubber-like polymer, used as a film former and viscosity-controlling ingredient.
What it is
Hydrogenated styrene/butadiene copolymer is a copolymer of styrene and 1,3-butadiene that has been hydrogenated. CosIng lists it as a film-forming and viscosity-controlling 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 show the proportions of the monomers or the molecular weight.
Functions
- Film forming
- Producing (upon application) a continuous film on the skin, hair or nails.
- Viscosity controlling
- Increasing or decreasing the viscosity (thickness) of cosmetics.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.