Chemical sulphates (such as sodium lauryl sulphate and sodium laureth sulphate) are what make shampoo foam into a frothy lather. While good at cleaning, they can strip the scalp and hair of natural oils, especially when used every day, as well as taking out the pigment of coloured hair. Great for coloured hair, Color Wow Color Security Shampoo (£16.50, colorwowhair.com) is free from both sulphates and silicons, which can build up on the scalp. Rejuvenate dry, damaged hair with Aldo Coppola Soothing Shampoo (£29, aldocoppola.co.uk), which contains eucalyptus and Scots pine to nourish. In Odylique Gentle Herb Shampoo (£12, odylique.co.uk), aloe and coconut oil leave hair so silky you might be able to forgo conditioner. Liz Earle Botanical Shine Shampoo (£10, uk.lizearle.com) contains naturally derived cleansers plus apple extract for really shiny hair.