Bioderma Node DS+ Shampoo is the formula which offers increased efficacy against severe and persistent dandruff. Persistent dandruff is usually thick, greasy and yellowish, sticks to the scalp and is usually accompanied by itching. Nodé DS+ formula limits the proliferation of Malassezia yeasts responsible for dandruff. Malassezia is a yeast naturally found on the surface of the skin. Excess sebum secretion by the scalp promotes its overgrowth, which triggers the occurrence of dandruff, scales and itching. DSactive™ patented complex minimises sebum secretion and also limits the proliferation of Malassezia. The DSactive™ patented complex guarantees dual efficacy thanks to its biological action on the cause of scales. Powerful kerato-regulating agents clear severe dandruff and facilitate its elimination. Enriched with soothing agents, Nodé DS+ instantly and lastingly relieves itchy scalps. The D.A.F patented natural complex increases the tolerance threshold of sensitised scalps. All BIODERMA products are formulated according to the ecobiology principles, which is at the heart of NAOS' approach to respect the skin's ecosystem and preserve its health in a lasting way.