To provide strength and vitality to the hair, Klorane Laboratories created the KERATINcaps nutritional supplement, which has an optimal composition based on Quinine extract, Vitamins B3, B6, B8, E, Zinc, Selenium and Keratin. Participating in maintaining good hair health *, trace elements act internally to care for dull hair **. To benefit from all these beneficial actions, we advise a treatment of 3 months, taking one capsule a day.