Proflavine & Alcohol. An excellent product for the treatment of raised scales, abrasions, ulcers etc. this formulation is a high penetration topical preparation. (not for pond wide use) Mercurachrome has been around for many years and is till used in many parts of the world as a human medication. In a pond water based products wash off giving little benefit. Our special penetrating formulation will be absorbed into the surface layers of tissue killing bad Bacteria in the ulcer aiding the healing process. For use at any temperature. Absorption through the skin is possible: Always wear protective gloves! Proflavine is being used for the early treatment of opened scales,scrapes and small infections. Do not swallow or breath in. Use only in well vented rooms or outside. Store in original container. Keep out of reach from children and pets. Keep in a cool and dark place. Always wear protecting gloves when using medicines. Is irritating for skin/eyes. In case of an emergency during usage, contact a doctor immediately and take the original container with you. In case of contact with skin/eyes, rinse with a a lot of water and ask medical advice. R: 34-20/21/22 S: 45-26-36/37/39.