The hair is structurally equivalent to the face and body, yet it possesses its own very unique features. The epidermis on the scalp is thicker than that on the body and has “hair bulbs” which generously secrete sebum, the hair’s natural protecting agent. Not only is the hair subjected to environmental aggressions daily, but it is also damaged by the abrasive, tension-active agents contained in shampoos, hair dyes and asphyxiating hair gels, as well as by heat from hair dryers, hair straightners, etc. Most hair problems are the result of an imbalance of the scalp’s pH, which nourishes the hair bulb. Biologique Recherche has applied its know-how of skin care to hair care to produce a cutting edge range of products, which help to restore (Initialisation Stage) and recondition (Treatment Stage) the scalp. The result is a full, shiny head of healthy hair.