Summer sun may do wonders for your skin and your spirit, but has your hair seen better days? If your strands are allergic to humidity, we've got you covered. From hair oil treatments to de-frizzing creams, we rounded up our favorite products for combating the elements and keeping your locks lush and shiny. One of our top picks: Bumble and Bumble’s Straight Shampoo and Conditioner ($29 and $32 at bumbleandbumble.com). Its patented gemstone-infused formula leaves strands smooth and manageable. Click through for more ways to fight frizz!