Hair relaxer lasts between six and eight weeks. This is a lotion that makes the hair softer and a lot easier to manage; this is an ideal solution to reduce unwanted curling in hair. Because this is not a permanent straightening method, some touch-ups are required from time to time.
Hair relaxer is chemically changing the structure of the hair. The two types of hair relaxers are Lye and No-Lye. For faster results, the Lye solution is best. However, for a sensitive scalp, the No-lye solution is better. Use a decalcifying shampoo with the No-lye relaxer. This reduces the calcium build-up.