I would either purchase this product at a Natural Food Store or from an online store such as Evitamins if I'm in a pinch. But this product is the best dandruff shampoo I've ever used. Other shampoos I've tried would either leave my scalp flaky or leave a medicine-like smell to it. This shampoo does not. Probably because of the blend of ingredients (Tea Tree Oil, Pine Tar) that you don't find in some non-natural hair care products that work well together and keeps my hair looking good.