In cosmetics, skin toner or simply toner refers to a lotion, tonic or wash designed to cleanse the skin and shrink the appearance of pores, usually used on the face. It also moisturizes, protects and refreshes the skin. Toners can be applied to the skin in different ways:
On a cotton round. (This is the most frequently used method.)
Spraying onto the face.
By applying a tonic gauze facial mask—a piece of gauze is covered with toner and left on the face for a few minutes.Some toners may cause some irritation to the skin if never used before. Users often apply serum and moisturizer after the toner has dried.