Be careful not to take the pH of a product below 3.5 as that is a peeling level acidity on the skin. Citric Acid will sting if it gets into cuts or scratches on your skin and will also be very irritating to the eyes. This is relevant if you are making and moulding bath bombs or if working with children who may rub their eyes.
Click on the links below to be directed to great recipes featuring Citric Acid: