One of the most common frustrations for epoxy resin artists is watching beautiful glitter sink to the bottom of a project instead of staying nicely suspended throughout your resin. Whether you’re creating jewelry, coasters, keychains, tumblers, or decorative art, uneven glitter distribution can significantly affect the final appearance of your piece.
Fortunately, glitter sinking is a problem that can be prevented with the right techniques and materials. In this blog, we’ll explain why glitter sinks in epoxy resin and share proven methods to keep it suspended for a professional-looking finish.
Why Does Glitter Sink in Epoxy Resin?
Glitter sinks because of gravity and differences in density between the glitter particles and the liquid resin.
Freshly mixed epoxy resin is relatively thin and fluid (unless you’re using a thick top coat resin that is). As the resin cures, glitter particles can move freely through the liquid. Heavier glitter particles eventually settle at the bottom before the resin becomes thick enough to hold them in place.
Several factors influence how quickly glitter sinks:
- Resin viscosity
- Glitter size and weight
- Amount of glitter added
- Room temperature
- Resin curing speed
- Project thickness
- Time lapsed from mixing your resin
- The working time of your resin
Understanding these factors can help you choose the best solution for your project.
1. Wait Until the Resin Thickens
One of the most effective ways to prevent glitter from sinking is to allow the resin to reach a thicker consistency before adding the glitter.
After mixing your epoxy resin, let it sit for a short period according to the manufacturer’s guidelines. As the resin begins to cure, it becomes more viscous and better able to support suspended particles.
Once the resin reaches a honey-like consistency, stir in the glitter and pour into your mold.
Benefits
- Helps suspend glitter evenly
- Reduces settling during curing
- Works well for most resin projects
Important Tip
Do not wait too long, as the resin may become difficult to pour or trap excessive air bubbles. Check the working time of your resin (the time you have before it begins to set).
2. Use a High-Viscosity Resin
Not all epoxy resins have the same thickness. Some formulas are designed to be thinner for deep pours, while others are thicker for coatings and crafts.
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High-viscosity resin naturally provides better support for glitter particles and decorative inclusions.
Best Applications
- Resin jewelry
- Coasters
- Keychains
- Decorative art
- Doming projects
If glitter suspension is important, choose a resin specifically designed for craft applications rather than deep-pour projects.
3. Apply Glitter in Layers
Layering is one of the most reliable techniques for achieving even glitter distribution.
Step-by-Step
- Pour a thin layer of clear resin.
- Allow it to partially cure until tacky.
- Sprinkle or place glitter where desired.
- Add another resin layer.
- Repeat as needed.
This method prevents glitter from traveling long distances through the resin and creates beautiful dimensional effects.
Benefits
- Excellent glitter control
- Creates depth and sparkle
- Ideal for larger projects
4. Use Fine Glitter Instead of Chunky Glitter
The size and weight of glitter particles play a major role in suspension.
Fine Glitter
- Lighter weight
- Better suspension
- More even appearance
Chunky Glitter
- Heavier particles
- More likely to sink
- May require layering techniques
For projects where uniform glitter distribution is essential, fine cosmetic-grade glitter is often the best choice.
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5. Mix Glitter Thoroughly
Proper mixing ensures glitter is distributed evenly before pouring.
When adding glitter:
- Stir slowly and consistently
- Scrape the sides of the mixing cup
- Avoid creating excessive air bubbles
A thorough mix reduces clumping and helps maintain a consistent appearance throughout the project.
6. Pour in Shallow Layers
The deeper the resin pour, the more time glitter has to sink.
For thick projects, consider pouring multiple thinner layers instead of one deep pour.
Advantages
- Better glitter suspension
- Improved curing consistency
- Reduced heat buildup
- Fewer bubbles
This technique is especially useful for resin trays, river tables, and larger decorative pieces.
7. Use Glitter as a Surface Accent
Sometimes the goal is not to suspend glitter throughout the resin but to create sparkle near the surface.
After pouring the resin:
- Sprinkle glitter onto the top layer
- Allow it to settle slightly
- Cure as normal
This creates a concentrated shimmer effect and prevents glitter from sinking completely.
8. Use PVA Glue
Some resin artists use additives PVA glue to increase resin thickness and improve particle suspension.
You only need a tiny dot of glue to start thickening. Use a toothpick and add a small drop at a time. Mix in thoroughly. As it dries, the resin will become clear again.
Common Mistakes That Cause Glitter to Sink
Adding Glitter Immediately After Mixing
Fresh resin is often too thin to hold glitter in place.
Using Deep-Pour Resin
Deep-pour formulas are intentionally low in viscosity, making glitter suspension more difficult.
Overheating the Resin
Warm resin becomes thinner, which can increase glitter movement and settling.
Using Excessively Heavy Glitter
Large metallic or chunky glitter particles are more likely to sink regardless of the resin used.
Best Glitter Types for Epoxy Resin
For maximum suspension, consider using:
- Fine polyester glitter
- Cosmetic-grade glitter
- Iridescent glitter flakes
- Holographic micro glitter
- Mica powder for shimmer effects
These products tend to remain suspended more effectively than larger decorative glitter shapes.