A few notes on toning.
a. A hydrating toner can help keep prevent moisture loss after cleansing.
b. Toners can help enhance the results of products that follow. Skin is more permeable when it is moist, so the application of a serum or moisturizer while the skin is moist will assist in the efficacy of the product.
c. Depending on the formulation, a toner can help control oil, soothe, calm, provide antioxidants, stimulate blood circulation or destroy acne-causing bacteria.
d. A hydrating toner can be a great way to hydrate oily skin without feeling heavy.