Keep Hair Luscious, Thick and Beautiful! Reduce hair loss for up to 2X less breakage when used as a system of shampoo and conditioner. Hair feels fuller and thicker on two levels at the scalp: To cleanse scalp of excess sebum and plump hair at the roots. At the fever: To improve resilience and strength. Densifying Spray Treatment instantly expands diameter of existing strands by 9%. For the look and feel of instant thickening.