"Unwash" appears to be a legitimate brand offering hair care products. The Unwash Bio-Cleansing Conditioner has received mixed reviews, with some users finding it effective and others not as satisfied. It's been rated 3.86 out of 5 based on 76 reviews. The conditioner is said to be one step better than the basic two-in-one shampoo and conditioners available at drugstores. It's also been listed as the best overall choice among cleansing conditioners by Byrdie, a beauty and wellness website. The product is suitable for all hair types and is safe for color- and/or chemically-treated hair. However, some users have reported that it might make hair look dull. As with any product, results may vary based on individual hair types and needs. It's always recommended to do a patch test or consult with a professional before trying new hair care products.