UV Resistance and Yellowing Protection

How Epoxy Resin Fights UV Yellowing

Epoxy resins naturally react to ultraviolet rays, which can cause yellowing over time. To reduce this risk, leading products, such as Icrystal and others, are formulated with built-in UV filters. These additives actively slow down yellowing, helping your projects maintain their clarity and finish longer—even when exposed to moderate sunlight.

Choosing the Right UV-Resistant Resin

Look for products that clearly state the inclusion of UV filters and provide a warranty against yellowing. For example, One-2-One and “Trasparente” kits each offer UV filtering with a 10-year colour stability warranty. This makes them suitable for items regularly displayed in daylight, like jewellery, coasters, or table surfaces. Always follow manufacturer mixing instructions and apply recommended thicknesses to maximise UV protection.

When This Matters Most

• Projects placed on windowsills or outdoors
• Resin-coated tables exposed to ambient light
• Wearable pieces (jewellery or keyrings) that experience daily light

For furnishings or décor that see regular sun, prioritising UV resistance can mean the difference between lasting clarity and early discolouration.