But to keep hair healthy, shiny, and vibrant, it is important to take proper care of it. Starting with regular hair washing. The Bumble and bumble Bb. Sunday Shampoo helps to effectively remove all dirt, oil, and styling or other cosmetic product residues from the hair and scalp. It gives a feeling of freshness and cleanliness and ideally prepares the hair and scalp to receive further care and to support the effects of the active ingredients contained.