How to Make Colour Last on White Resin

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How do I make coloured finishes last on white resin?

Adding a splash of colour to white resin opens endless creative possibilities, but ensuring those vibrant finishes last requires proper care. Here’s how to keep your coloured designs bold and beautiful on cured white resin.

The Key to Long-Lasting Colour: Sealing

Once you’ve painted or pigmented your cured white resin, the most effective way to protect the colour is with a clear sealing layer. A transparent acrylic varnish provides a physical barrier against scratches and minor abrasions. For even tougher protection, consider applying a thin resin topcoat, which not only locks in colour but also enhances gloss and depth. Work in a dust-free area, and let each layer cure fully before handling.

Choosing Colourants That Adhere

Use paints or pigments specifically compatible with cured resin. Acrylic paints adhere well to polyurethane resin, like the “IWhite” Polyurethane Casting Resin. For subtle shading and shimmer, try specialised colourants such as Colourfun liquid epoxy colourants or mica powders like Sahara metallic pigment. Clean and lightly sand the surface before applying colour for improved adhesion.

When This Matters Most

Sealing your coloured finish is especially important on items that will be handled regularly or exposed to light and moisture, such as jewellery, keepsakes, or functional art. Thorough sealing keeps colours fresh and your hard work protected from wear.

Related guides

How To Colour White Resin After It Has Dried

Consistent sealing and the right materials will ensure your coloured resin pieces retain their beauty for years. For more advice on enhancing and colouring white resin, explore our full colouring white resin guide.