I used this school, phase 2 approximately four sessions. They have totally destroyed and fried my hair beyond repair. Damaged my hair to the point of it breaking off. my hair is now approximately 5 to 6 inches shorter than it was when I started going here. **The instructor had the nerve to blame it on me! funny thing about it,the only thing I changed in my routine is using them!!! (I am completely distraught and depressed about my hair.) Just saying buyer beware. if you're color is blonde I would not go here!!!