Our best-selling Shampoo needed a conditioner that could match it, and CD1 does just that. Packed with PATRICKS Recovery Compound (PRC) – scientifically engineered to block the conversion of testosterone to DHT, which causes the hair cycle to shorten and hair follicles to shrink. It also improves ECM proteins in the dermal papilla surrounding hair - causing better anchoring in the scalp. These ingredients combine to directly address hair loss, promote hair growth and replenish scalp and hair health.Best Suited to thin to normal hair. Those concerned with or beginning to experience hair loss. Use in conjunction with SH1 Daily Thickening Shampoo. CD1 200ML