Federal Color Tonic Watercolor Medium, 60mL

Tonic Watercolor Medium is a clear, colorless medium made with premium acacia senegal gum for superior transparency, flexibility, and flow. It enhances handling and can be mixed with any watercolor paint. A plant-based plasticizer adds flexibility, while a gentle, cosmetic-safe preservative keeps it shelf-stable. Use it to add gloss, body, and brushstroke retention to your paint—great for bold shapes and clean lines. Like all Tonic products, it's vegan and free of animal-derived ingredients like ox gall.