Its pretty much the same as most other treatments. look at
www.verticalsinhair.com even thought it doesn't talk about opti-smooth it describes a similar process (and the before and after photos on this site totally convinced me to get my hair done)Its been about a week or so now and I cannot believe I still have this hair. Every time I have a shower I'm sure my frizzy hair will come back, but today not only did i not wash my hair, I even went out in the rain and my hair is still straight and there is no frizz at all!