IGK Low Key Cleansing Walnut Scalp Scrub This salt-free IGK Low Key Cleansing Walnut Scalp Scrub ($36) uses sugar and walnut shell powder to exfoliate the scalp and strengthen follicles in the process. Product buildup and dirt are removed, and hair is left soothed and shiny thanks to apple cider vinegar and walnut oil. Image Source: sephora.com IGK Low Key Cleansing Walnut Scalp Scrub $36 from sephora.com Buy Now