Wet spots and frosting are among the most common aesthetic challenges in container candle making, especially when working with natural soy wax. While these effects don’t impact the safety or performance of a candle, they can affect its visual appeal. Choosing a high-quality wax such as Kerasoy Container 4130, produced by Kerax, can significantly reduce these issues when used correctly.

What Causes Wet Spots?

Wet spots appear as patches where wax pulls slightly away from the glass, creating a “wet” or oily look. Typical causes include:

• Rapid cooling after pouring
• Cold containers at pouring time
• Temperature fluctuations during curing
• Improper pouring temperature

How to minimize them:

• Preheat containers to about 30–40°C before pouring
• Pour wax around 60–65°C (depending on fragrance load)
• Allow candles to cool slowly at room temperature
• Avoid drafts, cold surfaces, or refrigeration

Note: Natural soy wax expands and contracts more than paraffin, so occasional wet spotting is normal.

Understanding Frosting

Frosting appears as white crystalline patterns on the surface or sides of soy candles. This is a natural characteristic of vegetable waxes caused by crystal formation during cooling. To reduce frosting:

• Melt wax gently and avoid overheating
• Mix fragrance oils thoroughly but calmly
• Maintain consistent pouring and cooling temperatures
• Store finished candles in stable conditions

Even premium soy wax can frost slightly — it’s often considered proof of natural composition rather than a defect.

Is Heating Wax in the Microwave a Problem?

It can work, but it’s generally not recommended for professional results because of:

1. Uneven heating which increases frosting risk
2. Harder temperature control
3. Greater chance of overheating the wax

A controlled double boiler or wax melter typically gives more consistent outcomes.

Why Choose Kerasoy Container 4130?

This soy container wax is specifically formulated for glass candles and offers:

• Excellent glass adhesion when handled properly
• Smooth tops and stable burn performance
• Good fragrance throw
• Reliable results for professional candle makers

Practical Tips for Best Results

• ✅ Melt wax gradually (around 70–75°C maximum)
• ✅ Add fragrance at recommended temperature (~65°C)
• ✅ Pour steadily without agitation
• ✅ Let candles cure at least 48 hours before evaluation
• ✅ Maintain workspace temperature (around 20–25°C)