Hey Jonyd, Im not saying im some kinda scientist, BUT I put in the hair fiber like always, I notice it dries my hair out a little (a good static base). then patted it down a little (barely touched it), then a mist of hair spry (not much at all)....Ok this is where I may have discovered something for me.....after the hair spry was completely dry (1/2 hour), I brushed my hair and then it seems like the fibers left in my hair help bond the new fibers I just put in! I pulled my hair to one side and blew dry the part in my hair....it looks perfect? LOL