Kerium Ds Anti-Dandruff by La Roche-Posay is an intensive micro-exfoliating shampoo against dandruff and persistent dandruff accompanied by an intense itching sensation. Intensive micro-exfoliating shampoo-gel against dandruff and its recurrence that lasts up to 4 weeks. The extremely thin texture allows for a more targeted and uniform application. Enriched with LHA™ and Salicylic acid for a targeted micro-exfoliating action. Use 2 times a week for 4 weeks.