Glycerol & coconut oil Constructed with glycerol and coconut oil, the Serie Expert Nutrifier shampoo offers just the right dose of nourishment to dry hair. Glycerol helps to hydrate and nourish, while coconut oil brings shine to the hair. This silicone-free shampoo cleanses and leaves the hair softer, more supple and shinier. Apply evenly to wet hair. Lather. Rinse. In case of contact with eyes, rinse them immediately. The signs of dry hair include a raised hair cuticle, hair that lacks shine, feels rough and tangles easily. Hair can be dry for different reasons, from genetics to natural aggressions such as humidity, sun, and pollution. If left untreated, hair becomes more fragile and prone to breakage.