A tonic is a liquid that can either be hydrating or have exfoliating properties. Historically tonics were used to maintain the pH balance of the skin after cleansing with soap but over the years, skincare innovation in active ingredients have resulted in tonics with greater benefits. SKIN functional offers you a range of hydrating and exfoliating tonics using the best skincare ingredients to manage a variety of skin concerns. If you are unsure which tonic is best suited for you, schedule a FREE telephonic skin consultation with our skin experts who will guide you through every step of your skincare routine.