Ethique Eco-Friendly Dandruff Shampoo Bar I'll admit: the overall concept of a shampoo bar used to confuse the hell out of me for some reason, but the Ethique Eco-Friendly Dandruff Shampoo Bar ($16) is such an easy to use product that it completely changed my mind. It's supposedly the equivalent of three bottles of shampoo and it features plant-based ingredients that were able to clean my very flaky scalp after just one use. Image Source: amazon.com Ethique Eco-Friendly Dandruff Shampoo Bar $16 from amazon.com Buy Now