Syoss Intense Plex Leave-in Serum 100ml - Professional performance hair care serum for heavily damaged hair The Syoss hair care serum contains an expertly crafted high-performance formula, designed for heavily damaged hair repair and inspired by Japanese beauty principles. The Intense Plex technology used in the damaged hair serum formula repairs millions of broken hair bonds which strengthens the hair from within to reveal a luminous shine. This leave-in hair bonding serum immediately sinks into and smooths individual hair fibres, and deeply cares for hair breakage. Its formula is made from 92% naturally derived ingredients*. How to use: Apply evenly through the lengths and ends of wet or dry hair. For optimal results use also Intense Plex shampoo and deep conditioner. The product benefits at a glance: Repairs millions of broken hair bonds Cares for heavily damaged hair For up to 25x more strength* Leaves behind smooth and shiny hair 92% naturally derived ingredients* 100ml *Compared to prior untreated hair **Including 84% of water.