Arginine. 1. Nourishes root to tip. 2. Reinforces strands. 3. Resists breakage. Fragile, breaking, falling hair (hair fall due to breakage). Clinically tested (system of shampoo and conditioner tested for instant results + lasting transformation) for instant results, lasting transformation. Instantly helps reinforce hair from root to core to tip leaving hair stronger and more resistant to hair fall due to breakage. Advanced formula with concentrated arginine-k complex. Up to 3X stronger, more resistant hair (instrument test using system of shampoo, conditioner and treatment vs. non-conditioning shampoo). www.lorealparis.com. Made in USA.