A common misconception is that Relaxed Hair will "revert" back to natural hair. This is incorrect. Nothing will make hair that has been chemically relaxed go back to its natural state. You have two choices, you can transition to natural by leaving the relaxed hair on the ends as long as possible, or you can cut the relaxed hair off. If you decide to transition, be prepared for some breakage. The place where the natural hair and the relaxed hair meet is a very weak point. Many people experience a lot of breakage when growing out a relaxer. There are a few things you can do to MINIMIZE this breakage.
1. You must keep your hair moisturized
2. Minimize brushing and combing during the transition period
3. Find a protective hairstyle that works well for you. (braids, flat twists etc...)