Can I Use Acrylic Paint or Food Dyes in Resin?

Why Not Use Standard Paints or Food Colouring?

Standard acrylic paints and liquid food colouring are not recommended for resin work. These products often contain water, gums, or sugars that can disrupt polyester resin’s chemical process. The inclusion of the wrong additive may prevent curing, lead to a sticky or cloudy finish, or even cause the resin to separate.

To achieve the finish and durability you want, always opt for colourants specifically designed for use with resin systems—these are formulated to be fully compatible with the curing process.

Best Colourant Options for Polyester Resin

Choose specialist pigments that are labelled as suitable for polyester resin. These include powders, pastes, and effect additives covering a wide range of colours and finishes. For example, phosphorescent pigments can create glowing effects, while additives like Resi-Blast offer unique cell and pattern designs. These options blend uniformly, preserve clarity, and allow the resin to cure as intended.

• Always check the manufacturer’s usage instructions for pigment-to-resin ratios
• Test small batches first, especially when working with new effects
• Store pigments carefully to keep moisture away

When This Matters

Using the correct pigment is crucial for casting, repairs, or decorative projects where you need a strong, even finish. It’s especially important in applications such as waterproof structural repairs or glow-in-the-dark details, where performance relies on proper curing and colour stability.