Gulff UV Ambulance Fly Resin adds high-visibility fluorescence and glow to your flies, helping trout, steelhead, and salmon key in on impact points during low-light and stained water conditions. This 100% covering colored UV resin delivers strong fluorescence that absorbs available UV light under water and reflects it back from key trigger zones, increasing visibility and creating a reaction bite when fish track your presentation. Apply light coats to heads, collars, wing cases, hot spots, and other impact points; the high pigment content performs best in thin layers. The formula cures in seconds under UV light and reaches a tack-free hardness, allowing tiers to build durable finishes quickly at the bench. Gulff formulated this 15 ml resin with user safety and the environment in mind, using a biodegradable main raw component, making it a responsible option for modern fly tying. Use it to build new patterns or refresh older flies with added glow and contrast for night sessions, deep runs, and off-color water.

• 100% covering fluorescent UV resin for general fly tying use
• Reflects and glows under water to increase visibility on impact points
• Cures in seconds with tack-free hardness
• 15ml bottle