Just like your skin, the scalp has its own unique microbiome that's key to strong, healthy hair. A comprehensive understanding of this is at the heart of haircare specialist Flora Lab Paris; the brand takes a holistic approach to caring for your locks, with its collection of products backed by years of scientific research as well as proprietary complexes. With the Serum N° 4 Densite formula, hair growth and density are stimulated, giving you fuller, thicker and healthier hair with continued use.