I'm one of those slightly unfortunate people that always has to use medicated shampoo to keep my scalp healthy. It annoys me, because it limits my shampoo choices. I also have hair that requires washing every single day, or it looks terribly greasy! My mum bought Jason Dandruff Relief Shampoo, so I decided to try it. She prefers to buy toiletries that are 'natural'; not in the way that brands like Timotei or Herbal Essences attempt to convey by their inclusion of herbs and plant extracts, but ones that avoid certain substances, such as sodium laureth sulphate. SLS is used as a foaming agent in shampoos, toothpastes and shower gels. It has been associated with ...  Read the complete review