Although a bar of soap is classed as a surfactant, it is fine for your body (see our soap bars page for those details) but with a pH of 8-10, it is far too alkaline for hair. This means the hair cuticle doesn’t lay down and it can lead to hair abrasion and damage. Therefore, we use mild, creamy, plant-derived biodegradable cleansing agents with a pH of 6-6.5, which is a perfect acidity level for hair.Our biggest shampoo ingredient, ‘Sodium Cocoyl Isethionate’ (SCI) is one of the gentlest surfactants available, being exceptionally mild with great lather and suitable for all skin and hair types. With that, we use sulfate-free and palm oil-free sodium lauroyl sarcosinate (Easyfoam), extremely foaming in hard water and a very mild, hydrophilic (so excellent rinse ability) with large molecules that don’t penetrate the skin and irritate.To these, we add other gentle, liquid surfactants for mildness and viscosity, as well as pro-vitamin B5 and hydrolyzed protein.