Poo-Free Shampoo Recipe Sulfate-Free - NaturallyCurly.com Ok, very skeptical but I'll try it! Baking Soda seems to work for just about everything else ;) Baking Soda Shampoo. pinner said : "I just mixed it in with my regular shampoo. My hair feels so light and has crazy volume. It removes all the product build up." Also use baking soda and water as a face mask for 15 minutes to dry up oil in your pores.