Which hair type is it good for?? Straight ? Wavy ? Curly ? Coiled ? Tightly Coiled What it is:A deep, weekly cleanser that lifts away product residue and built-up pollutants for more vibrant, healthy-looking hair. Key benefits:- Deep cleanses - Removes buildup - Promotes detoxification If you want to know more?Sunday Shampoo was developed as a clarifying cleanser to rid the hair of product and pollutant buildup, hard water minerals, and other residues that can cause lifeless, dull-looking locks. Introducing a new shampoo once a week to deviate from your normal regimen awakens the scalp and the look of hair, preventing what Bumble and bumble calls shampoo boredom. Especially powerful for beauties who use multiple products a day or week, this cleanser promotes the scalp?s natural detoxification process. What else you need to know:This product is not suitable for color-treated hair. Bumble and bumble is a cruelty-free brand, meaning they don't test on animals. Bb. products are free from parabens, phthalates, mineral oils, and formaldehyde.