Here’s the cool thing about shampoo: You don’t need to spend a ton of money to get one that really, truly works. I’m not kidding — some of the best shampoos out there (including the one I love and use right now in my shower) can be found at the drugstore. That being said, “you do want to make sure the shampoo you’re using, regardless of the price, is tailored to your hair’s specific needs, so you’re not wasting your money or hurting your hair, “says Giovanni Vaccaro, an NYC-based hairstylist and founding member of Glamsquad. And to help you get on the right path, I rounded up the 15 best drugstore shampoos — all under $ 20 (!!) – that are formulated for specific hair types and textures to make your hair look and feel freaking amazing.