Why Is My Coloured Resin Cloudy or Streaky?

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If your coloured resin is turning out cloudy or streaky, you’re not alone. Achieving perfect, clear, and even colour can be a challenge, but there are reliable ways to avoid these common pitfalls.

What Causes Cloudiness or Streaks in Coloured Resin?

The most frequent reasons for cloudy or streaky resin are incomplete mixing and using colourants not designed for resin. Not blending your resin mixture thoroughly leaves unincorporated pigment particles that either sink or float, leading to uneven appearance and loss of clarity. Additionally, unsuitable colourants may not disperse properly, causing streaks and milky effects rather than the vibrant, uniform look you expect.

Choosing and Using the Right Colourants

To achieve a flawless finish, always select colourants specifically made for resin. Dedicated epoxy dyes, such as the Colourfun Liquid Epoxy Resin Colourant, blend smoothly and maintain the resin’s transparency or opacity as needed. Be sure to add the colourant gradually and mix for several minutes, scraping the sides and bottom of your mixing container to ensure even distribution. For vivid, streak-free colour effects, consider a set like the Colourfun Set for pastes, or Magic Crystal for beautiful transparent finishes.

When Attention to Mixing Really Matters

For detailed artwork and jewellery, where clarity highlights the design, thorough mixing is crucial.
When layering colours in one piece, incomplete blending can result in visible, unwanted lines.
Projects with high transparency demands—such as river tables—rely on proper mixing to avoid cloudy sections.

Related guides

How Do You Colour Liquid Resin

Consistently clear, vibrant resin starts with the right products and careful technique. For more tips on achieving perfect colour, explore the full guide on how to colour liquid resin.