I have a very sensative scalp and since moving to Germany, had been battling dandruff. The water here is so hard and bad for your hair and skin. I had tried everyother store bought dandruff shampoo and nothing working. Anyhow, my hairdresser suggested Nexxus Danderrest. I have been using it since and it got rid of my dandruff from the very first use!! You can only purchase it in salons or online. It is a bit more expensive than store bought shampoos, but it is totally worth it! I get the 300 ml bottle for $7.20 from Spiral HairCase Online! . I have recommended this shampoo to everyone who has complained about dandruff and dry scalp!