Does Clear Resin Yellow Over Time? How to Prevent Discolouration

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Clarity is one of the main attractions of clear resin, but many crafters and makers wonder if that perfect transparency can last. Understanding what affects resin over time helps you choose and care for your finishes with confidence.

Why Clear Resin May Yellow

Most clear epoxy resins are now manufactured with advanced UV filters. These help guard against discolouration caused by light exposure, which was once a common issue. However, prolonged exposure to direct sunlight or intense UV can still lead to gradual yellowing, especially with older or improperly cured resins. Other factors, such as contact with heat or certain chemicals, may also contribute over the years.

How to Preserve Resin’s Clarity

Caring for your resin projects starts with the right resin. Products like “Icrystal” Clear Epoxy Resin are formulated for long-term clarity and contain integrated UV protection. Regardless of the product, mixing ratios and thorough curing are crucial—follow the manufacturer’s instructions closely, as incorrect preparation can shorten the resin’s lifespan and increase the risk of yellowing.

Store artworks and surfaces out of direct sunlight where possible.
Use coasters or mats to limit heat exposure.
Clean resin with gentle products and soft cloths.

When This Matters Most

If you create jewellery, castings, or finishes for decorative tables and homeware, clarity and colour are especially important. Projects intended for display under natural light or serving food (such as those using EpoxyFood) should be chosen and cared for with extra attention.

Related guides

With today’s improved formulas and simple care steps, it’s easy to keep your clear resin looking beautifully transparent. For more advice on choosing high-quality resin for every project, explore our full guide on where to buy clear resin.