Sodium bicarbonate (also known as baking soda) is a refined, soluble, white powder used as a leavening agent and a key ingredient of baking powder. As an ingredient, it is soothing, neutralising and versatile: noted for its cleansing, protective effects on the gums and teeth. When mixed with saliva, sodium bicarbonate helps to neutralise acids in the mouth, sweeten the breath and keep your gums healthy.
As well as a popular baking ingredient, sodium bicarbonate has many versatile uses in cosmetics. It can be used to soften bathwater and boost circulation, and combined with citric acid and hot water to create bubbles. When added to a shampoo bar base, this silky powder forms a soapy paste which gently cleanses the hair and skin.