This is a breakthrough Exfoliating Toner that is able to penetrate the skin [howto tab]Each morning and evening, take some tonic onto a clean cotton pad and swipe across face and neck, avoiding the eye area. For sensitive skin, use once daily for the first week, then increase to twice daily. A tingling sensation may occur and is normal. Always follow with an appropriate skincare routine that includes a moisturiser as exfoliating toners can be drying. For sensitive skin we recommend using once in 2 days and adding more times as the skin responds[/howto tab]