A polyurethane polymer used as a binding agent.
What it is
Polyurethane-33 is, according to CosIng, a complex polymer made by reacting dimethylolpropionic acid and a polyester of adipic acid, hexylene glycol and neopentyl glycol with methylene dicyclohexyl diisocyanate, then neutralising with triethylamine and chain-extending with hydrazine. CosIng lists it as a binding agent.
Where it is used
Found in hair styling products and some makeup.
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
- Binding
- Providing adhesive properties during and after compression in cosmetic tablets and/or cakes.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.