Product Overview Get the professional solution that gently cleans & soothes sensitive scalps. Wella System Professional Balance Scalp Shampoo. The formula cares for your hair whilst providing a soft, clean, balanced finish that helps locks look & feel their best. Benefits This shampoo contains a skin-friendly p H value that is kind to your sensitive scalp. An effective cleanser, this product is also ideal for preparing the scalp for hair-loss treatments.