Thanks to a follower, today I'm plugging Weleda Rosemary and Ginger shampoo. This is made with essential oils and plant-based cleansers and cleans your hair without causing a build up of chemicals. I love the strong ginger smell. It also contains grapefruit extract, which has antioxidants and minerals that can supply nutrients to both the hair and scalp. It's £7.95 at amazon.co.uk.