HOW IT WORKS:Concentrated cosmetic formula with “CoZyme-10 Vitamin Complex”. Especially researched technology for areas with low-density capillarity and weak hair.INSTRUCTIONS:This product has 3 phases. Use twice a day. Apply Hair Booster on hair from roots to ends before applying Nioxin Scalp Treatment. After the application, this concentrated and vitamin-full formula can provoke a temporary scalp reddening.