summer hair care tip Ingredients for summer hair repair: 1 cup water 1 tablespoon baking soda 2 tablespoons apple-cider vinegar Add vinegar into the water, add the baking soda, mix, and you’re done. That’s it. Can you believe it? Pour the solution over your hair. Let it simmer on your head for about 10 minutes. Rinse. Wash. You’re done. The solution will pull the impurities from your hair, leaving it healthy and shiny as new.