Not all hair types are created equal, which is why we can't believe there haven't been more customizable options up to this point. Beginning in March, personalized hair-care brand Prose will add a hair oil to their offerings. Fill out the digital survey (if you don't already have an account), and a bespoke hair oil will arrive at your door that's made specifically your hair type, texture, and needs, using a blend of 30 different oils.