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What are UV Stabilizers?
All epoxies yellow over time. To combat this, we add UV stabilizers to some of our products, especially those that are used as transparent or translucent systems. UV stabilizers absorb UV light to prevent damage to the polymer but are consumed in the process. Over longer periods of time, the absorbers lose their effectiveness. Discoloration will happen over extended periods of UV exposure even if you pigment your epoxy, though it will be less noticeable.