Nioxin DiaBoost Xtrafusion Treatment is a leave-in hair care treatment designed to strengthen and thicken fine, thinning hair. This treatment works to increase the thickness of each hair strand, providing a fuller and more resilient result with reduced breakage. It is a silky, non-sticky formula that leaves hair looking lustrous and full of vitality. Utilizing breakthrough HTX Technology, Nioxin Diaboost penetrates the hair shaft to strengthen resilience and reduce hair loss. The blend of Niacinamide, Caffeine, and Panthenol contributes to visibly thicker, healthier, and fuller hair with improved manageability. Simply spray 2-3 sprays onto your scalp and massage into wet or dry hair daily, either in the morning or evening. It can be used in conjunction with your regular styling products.