20 candle problems, and exactly how to fix each one
Learn why the most common candle problems happen, how to fix them correctly and what to change to prevent them from coming back.
Most candle problems can be fixed once you know what is causing them
A candle can look perfect when poured and still develop sinkholes, frosting, rough tops, cracks, tunneling or wick problems once it cools or burns.
The difficult part is knowing what actually caused the problem, the wax, wick, fragrance, temperature, container or technique.
This guide helps you identify the issue, understand the cause and make the right correction instead of changing everything at once.
What You’ll Learn from This Guide
- Why sinkholes, frosting, cracks and rough tops happen - and how to prevent them
- Why candles tunnel, burn unevenly or the wick goes out - and what to change
- Why a candle smells strong before lighting but weak while burning - and how to improve it
- How to know if your wick is too small or too large - and choose the right size
- Which problems can be fixed now - and what to change in your next batch
- How to burn test correctly - and what to check before selling or gifting
20 Candle Problems in 4 Sections
Wax & Surface Problems
Sinkholes, frosting, rough tops, cracks, air bubbles and oily surfaces - why they happen, how to fix them and prevent them.
Wick & Burning Problems
Tunneling, drowning wicks, soot, mushrooming, flame problems and uneven burns - what is wrong and what to change.
Scent Throw Problems
Weak cold throw, weak hot throw and scent that disappears while burning - why it happens and how to improve it.
Molds, Containers & Burn Testing
Mold sticking, wet spots, container cracks, wick sizing and burn testing - how to avoid these problems and test correctly.
Who This Guide Is For
- Beginners who want to understand common candle problems before wasting wax and materials
- Candle makers with recurring issues who need clear causes, fixes and prevention in one place
- Makers improving their technique who want more consistent results, better burning and stronger scent throw
- Anyone making candles who wants to know how to test them properly before selling or giving them away
What Readers Say
My candles kept tunneling and I was about to give up on soy wax. Your guide helped me see it was my wick size, not the wax. One test burn later, problem solved!
Your guide is organised so well! I just look up what my candle is doing, read the causes and try your fix. The burn test checklist alone made my candles so much more consistent.
I had sinkholes in almost every pillar candle and couldn’t figure out why. You explained exactly what causes them, and my last batch came out with perfectly flat tops. Thank you so much!
Frequently Asked Questions
The guide covers 20 common candle-making problems, including issues with wax and surfaces, wicks and burning, scent throw, molds and containers.
For every problem, I explain what it looks like, the possible causes, how to fix it, how to prevent it next time and a practical tip to help you troubleshoot it more easily.
Yes. Wick selection is covered, including the differences between cotton, wooden and booster wicks, plus the basics of choosing the correct wick for your candle.
Yes. Both cold and hot scent throw are covered, including the common reasons a candle may smell weak and what you can check or change.
Yes. It includes problems such as candles sticking to molds, visible mold seams, unsuitable containers and wick/container mismatches.
Yes. The guide includes a burn-test checklist so you know what to look for when testing a candle and can identify problems before selling or gifting it.
Yes. It is written so beginners can understand what is happening with their candles, but it is also useful for experienced candle makers who want a practical troubleshooting reference they can return to quickly.
No. The Troubleshooting Guide can be purchased and used completely independently from the video course.
About Me
Hi, I’m Zoriana, founder of Ronaja.Home.
For the past 4+ years, I’ve been making, testing and selling candles and handmade decor. During that time, I’ve dealt with the same problems candle makers face every day - tunneling, sinkholes, frosting, wick issues, weak scent throw, rough surfaces and candles that simply do not burn the way they should.
I created this guide to bring the solutions I’ve learned through real testing into one practical place, so you can understand why a problem happened, how to fix it and what to change next time.
Know Exactly What Went Wrong With Your Candle
20 common candle problems, their causes, fixes and prevention - all in one guide you can return to whenever something goes wrong.
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