i'm doing my nail course at last and we've been set home work to explain the process of polymerization, does the following sound right.. i've read the manually and bits on the net and this is what i have come up with... Process of Polymerization Polymerisation is the chemical reaction which fuses polymer (powder) and monomer (liquid). Benzoyle Peroxide is the catalyst which starts this process. By adding sulphur bonds the molecules within the acrylic link together to form multiple chains by cross linking. This process hardens the acrylic in around 40seconds.