Squamo-reducing anti-recurrence treatment shampoo.this shampoo gives long-lasting relief from dandruff and rapidly soothes the scalp. its complete formula is made from purifying complementary actives and it acts on all the factors involved in severe dandruff conditions. kelual ds shampoo prevents recurrence. * 1 application per week as maintenance can prevent dandruff from reappearing for a long time.directions for use apply, lather and massage into the scalp, rinse reapply and leave on for 3 minutes, rinse intensive treatment phase: 3 times per week. 2 weeks maintenance phase: once per week.