Overview Clinically proven to remove the build-up of sebum and product residue that can clog pores and affect healthy hair, this shampoo cleanses, exfoliates and renews the scalp with wintergreen-derived salicylic acid. It also nourishes dry, tight scalps with extracts from millet seed and milk thistle, equalising the lipid balance. One of seven ground-breaking products honoured with gold-level Cradle to Cradle certification – a standard that honours products that positively impact people and the environment.