The summer months can be rough on your hair—chlorine, saltwater, and sun can dry it out and styling products can weigh it down. Give your tresses a boost with this easy-to-make rinse. Mix 1/2 cup of apple cider vinegar, 1 1/2 cups water, and a few drops of your favorite essential oil in a spray bottle. Spray the mix on your roots and let it sit for about 5 minutes. Then rinse it clean. Repeat once per week for super-shiny locks.