Clinically proven two-step scalp system. The 2-Step Thickening System for fuller-looking hair, from root to end. The Stem Cell Scalp Serum™ fortifies the follicle environment to lessen the first signs of visible shedding. The Stem Cell Thickening Foam™ styles and lifts, waking up inactive-looking follicles and delivering instant lift from the first application. The Results: + 56% less visible hair fall-out in 12 weeks with Stem Cell Scalp Serum. 85.7% saw more scalp coverage.** + 94% noticed more volume + lift at the root from first application.* + Trichologist-formulated, Cold Processed® below 40°C + Vegan, no rinse, leave-on — both products Valued at: $138 Stem Cell Thickening Foam™ | Full Size | 4 oz Stem Cell Scalp Serum™ | Full Size | 2.2 oz