Can Resins Be Painted or Coloured?

Resin castings are not just strong and versatile—they also offer plenty of creative freedom. Whether you’re making art, jewellery, or decorative objects, most resins can be coloured or painted to customise your project.

Ways to Add Colour to Resin

Colour can be introduced into many resins, such as polyurethane or mineral-based varieties, at two stages: during mixing or post-curing. Blending pigments or dyes into the liquid resin before it sets ensures an even, all-over colour. For water-based mineral systems like NatuResin, dry pigment powders work exceptionally well, offering vibrant, customisable shades at the time of casting.

Painting Resin Castings After Curing

If you choose to colour your project after it has set, cured resin surfaces—including those made from epoxy, polyurethane, or mineral resin—can often be painted. Acrylic paints and sprays typically adhere well, especially if the surface is lightly sanded to help the paint bond. For fine details or artistic finishes, this method is ideal—simply make sure your piece is clean and dry before painting.

Choosing the Right Resin for Colouring

When selecting a resin for a coloured project, consider both its compatibility and your end goal. Polyurethane products like IWhite make colouring part of the casting process easy. Mineral-based resins offer an eco-friendly solution and can be painted or pigmented for custom finishes. If clarity or a glossy finish is key, transparent epoxies such as Icrystal can be tinted or left clear for striking effects.

When This Matters

Custom colouring is particularly important when your resin project will be on show, used as jewellery, or incorporated into bespoke craft items. It allows for truly unique and eye-catching results that suit your vision or match a client’s brief.

Related guides

Whether you want subtle hues or bold colour, adding pigments or paints to resin unlocks new possibilities for creative personalisation. To explore more about resin types and their properties, return to our main guide on what causes resin.