As for application, you'll want to soak a cotton ball with the toner and gently sweep it across your skin after cleansing every morning and before you go to bed at night. This should be your second step so it preps the skin to absorb your moisturizer (third step) and skin treatments (fourth step).
Who should use Face Toner?
Everyone should must use Toner because Toner helps absorb products into the skin.