Loreal Expert Scalp Advanced Serioxil Shampoo 300 ml This lightweight gel gently purifies and helps to give the feeling of renewed density. The hair is denser and more radiant. Enriched with magnesium, it helps to purge hair roots of product residues that can affect healthy hair growth. Created in collaboration with hair professionals, tested by dermatologists. A fresh composition wrapped in a refreshing breeze with a clean-feeling heart and a professional, caring base.