I have my hair thinned (Ouidad-style carve/slice) about once a year and then only in some places like the back. I've become very conservative about doing it. It doesn't frizz my hair at all.
My blog - http://suburbanbushbabe.wordpress.com/
My FOTKI - http://whatsnew.fotki.com/suburbanbushbabe/

Playing with my hair is a hobby. Fluffy, fine natural 4a. Goal= Healthy, beautiful hair that retains its length.
Hear that crash? It's me falling off the CG wagon.