COSRX Propolis Synergy Toner: The Ultimate Hydration for Glowing, Dewy Skin The COSRX Propolis Synergy Toner is a powerhouse hydrating toner designed to give your skin a radiant and healthy glow. Enriched with 72.6% Black Bee Propolis extract and 10% Honey extract, this toner delivers intense nourishment while soothing and plumping the skin. Perfect for dry, sensitive, or dull skin, the COSRX Propolis Toner is your first step to achieving a dewy, youthful complexion. What is COSRX Propolis Synergy Toner? The COSRX Full Fit Propolis Synergy Toner is formulated with propolis, a natural ingredient known for its anti-inflammatory and antioxidant properties.