There are a couple ways you could introduce baking soda to your hair care routine:

1. Clean your brushes and combs:

“Hairbrushes and combs pick up not only loose hair, but they also get oily. Clean yours once a month by soaking them in a solution of warm water and a teaspoon or two of baking soda. Scrub them with a soft brush, if needed, then rinse them with clean water and let them air dry.”

2. Rinse product build-up out of your hair:

“Is your hair dull and dingy? Maybe you have a build-up of shampoo, spray, mousse, and other products in your hair. Mix a teaspoon of baking soda in with your shampoo the next time you wash your hair. The soda will remove any build up and leave your hair soft.”

Photo CC 2.0, The Infatuated