Protect against thinning hair with BosDefense 30-Day Kit featuring a simple, 3-step system including a Nourishing Shampoo, Volumizing Conditioner and Leave-In Thickening Treatment. Bosley MD BosDefense Starter Pack For Color-Treated Hair is an all-in-one starter kit. It combines a nourishing shampoo, volumizing conditioner, and thickening treatment all in one pack.Vegan, Cruelty-Free, Sulfate-Free, Paraben-Free, Color Safe