We’ve all had bad hair days, whether our roots are overgrown, our edges won’t lay flat or our curls refuse to hold. While many of these issues can be solved with different styling tools or products, there are other hair woes that start specifically at the scalp. A healthy scalp is the key to flake-free, grease-free hair that grows long and strong — consider it the foundation of your next good hair day. If you’re wondering how to improve the health of your scalp, keep reading for a roundup of our all-time favorite scalp care products 
