The Davines Essential Haircare Shampoo Bars (£14 each), which launch at the end of May on Cult Beauty and Liberty London, were created with both the health of your hair and the health of the planet in mind. Available in four of the brand's existing formulations — the Dede Shampoo Bar for frequent cleansing, the Love Shampoo for frizzy hair, the Momo Shampoo for dry, dehydrated hair, and the Volu Shampoo for fine, limp hair — each bar is packaged in 100 percent recyclable paper, whilst the CO2 generated from manufacturing the bars is offset via the EthioTrees reforestation project. As for the formula, the bars are all sulphate and preservative free, and contain a blend of light surfactants and conditioning agents that leave hair feeling clean but not stripped.