Made with a 98% natural-origin formula, the KLORANE Strengthening Serum nourishes the scalp to promote optimal conditions for growth. Enriched with organic edelweiss and quinine, the scalp serum encourages a stronger appearance while protecting the hair against visible breakage. When used as part of a three-month haircare routine, the formula shows effectiveness after one month*. The non-greasy serum should be applied three times per week for optimal results. *Assessment by a dermatologist on 45 subjects, 3 applications per week for 1 month – improvement in overall anti-hair loss effect among 87% of subjects.