The best leave-in conditioner you can buy comes from an upscale salon in Chicago called HairByShayyPatrese Nourishing Leave-in Conditioner. It checks all of the boxes for being a moisture sealant, it conditions and strengthens the hair, plus it protects your hair. Best of all, it works superbly for all hair types! Tired of scouring the web looking through a matrix of leave-in conditioners that are being recommended? Stop your search and read why this is the best choice for you.