I wanted to try this relaxer to see if it was gentle, and was very surprised to find out that just like with regular relaxers, I couldn't leave it on for more than 9 minutes. My hair was extremely straight. I liked the results I got. It also had a pre-relaxer treatment inside that you add to the hair before relaxing to keep from over processing it. After using this kit and neutralizing, I used Joico Cuticle Sealer which made my hair very silky and soft.