It’s still a few more weeks before the hair salons will be opening. In the mean time, you can add volume to your hair that has been robbed by sweat and oil buildup with baking soda. Simply sprinkle 2 teaspoons of baking soda on your scalp and rub in with your fingertips. This will absorb moisture while its texture props up roots off the scalp. Your hair will have pizzazz.