Introducing Luster’s PCJ Smooth RootsTM No-Lye Conditioning New Growth Relaxers with Shea Butter & Sunflower Oil. Luster’s PCJ Smooth RootsTM is the only children’s new growth relaxer kit. PCJ Smooth Roots is compatible with any relaxer used in the past. Luster’s PCJ Smooth RootsTM is designed to save mom’s money and touch-up her little girl’s new growth. When her new growth gets 1⁄2 to 3⁄4 inch long, its time for a touch-up. Look and feel beautiful with the NEW Smooth Roots relaxer