Wella System Professional Deep Cleanser Shampoo. Effectively eliminate overloaded and stressed hair from residue with Wella SP Deep Cleanser Shampoo, an intensive pre treatment cleanser. Gently freeing the scalp of residue, Wella SP Deep Cleanser Shampoo provides an optimal base for chemical treatments. An essential pre colour and perm cleanser, it helps ensure you get the best results from your chemical treatment.Benefits -Gentle on scalp and hair structure.Detox from products and residue.Optimal preparation for care, colour or perm treatments.For all hair types Beauty born from science.