Painting Resin vs Using Colourants: What’s the Real Difference?

← Back to Which paints can be used to paint resin?

What is the Difference Between Painting Resin and Using Colourants?

Choosing how to add colour to resin can transform your creative possibilities. Should you paint on the surface or mix in colourants? Each approach offers unique results, and understanding their difference helps you pick the best method for your project.

Painting Resin: Surface Colour, Maximum Flexibility

Painting resin involves applying colour directly onto the cured surface. This technique allows you to decorate, highlight, or finish your project after the resin has hardened. You’re free to use a wide range of paints once the surface is fully cured and properly prepared – gentle sanding and cleaning help paint adhere better and last longer. Acrylics are a popular choice thanks to their vibrant finish and easy application.

If you’d like to combine smoothing with paint-friendly results, a dedicated product like the “3D Finish” – Fast Coating Epoxy Resin for 3D Prints provides a glossy, polishable surface ideal for further painting.

Using Colourants: All-Over, Even Colour Effects

Colourants are added directly into uncured resin before pouring or casting. This method gives you full-depth colour throughout the piece, resulting in a vibrant, consistent effect. Paste and liquid colourants, such as the Colourfun Set, are specifically designed to blend easily and offer excellent coverage, from translucent tints to solid shades depending on your dose.

Mixing colourants into resin not only ensures even distribution, but also creates custom hues by blending different pigments. Always be sure to follow guidance on compatible resin and pigment ratios to avoid over-saturating the mix.

When Each Method Matters

Choose painting if you want detailed designs, highlights, or wish to decorate the outside of an already cured piece.
Choose colourants for an overall, uniform look or when you want colour to withstand handling and wear without chipping.

Related guides

Which Paints Can Be Used To Paint Resin

Understanding whether to paint resin or use colourants will help you achieve your ideal finish and durability. For more creative advice on resin colouring and techniques, visit our main guide on paints suitable for resin.