Jamaican Mango and Lime Transition Natural No More Relaxer Thermo Control Serum. New Growth transition from relaxer to natural for maintaining relaxer free hair. Is a styling system that is designed to help soften, condition, loosen and manage your new growth. As you transition from relaxed hair to natural, the No More Relaxer Thermo Control Serum will help you maintain the new growth while you grow out your relaxer.