A rich and luxurious shampoo, one of the primary keys to prolonging the lifespan of treated hair is to keep the shaft from drying out. Many treatments damage the hair, allowing a drying process to be accelerated. An excellent moisturizing barrier will prolong the look and health of the hair. The best moisture for hair is water. To function correctly, a well-hydrated body means sufficient moisture for hair function. Externally, it means that the hair can maintain elasticity and suppleness. For moisturizing hair, water is the king. However, hair is porous and keeping this moisture in hair is next to impossible without sealing it. The best way to trap moisture in hair is to use an oil or a “fatty alcohol” based product designed to coat and seal. Fats are made of large molecules. These molecules are too large to be absorbed by the hair strand. Instead, it covers the strands and seals the moisture in the hair. So, the key to avoiding dry hair is to hydrate and seal.