How to Choose the Right Candle Wick: The Complete Guide for Any Wax or Fragrance Oil
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⭐ THE COMPLETE GUIDE TO CHOOSING THE RIGHT CANDLE WICK
Introduction: Why Wick Selection Matters More Than Anything Else
Every time someone walks through our door and says, “I need a candle wick,” I can’t help but smile.
For non–candle makers, it seems simple: stick a wick in wax and poof — you have a candle.
If only.
Yes, you might get lucky and the wick will burn.
But more often:
- the wick drowns itself
- or it becomes a tiny torch
- or it produces black soot
- or it burns for a few minutes and then dies
Hobby shops and YouTube videos don’t help.
“Just stick some string in wax!” they say.
Sure — if you want a candle that kind of burns. So yes, anyone can make a candle but it takes testing and preparation to make a great candle!
The truth is simple:
⭐ Wick selection is the single most important part of candle making.
And with dozens of wick families available, it’s very easy to choose one that simply won’t work.
This guide will walk you through everything you need to know — from wax type to fragrance oil behavior — and show you how to choose the right wick every time.
⭐ Table of Contents
- Why Wick Selection Is So Complicated
- The Four Things We MUST Know Before Recommending a Wick
- Why Fragrance Oils Change Wick Size
- How to Use Candle Cocoon’s FO‑Specific Wick Chart
- How to Test Burn a Candle Correctly
- Common Wicking Mistakes
- Wick Families and When to Use Them
- Troubleshooting: What Your Flame Is Telling You
- Wick FAQ
- Final Thoughts
⭐ 1. Why Wick Selection Is So Complicated
A candle wick isn’t just a piece of string.
It’s a fuel delivery system, and every candle variable and wick attribute affects how it performs:
Wick factors
Wick material - cotton, hemp, paper, zinc, wood
Wick tension
wick size
Other candle factors
- wax type
- fragrance load
- fragrance chemistry
- dye
- container diameter
- container shape
- ambient temperature
- cooling conditions
This is why “small, medium, large” wick packs from hobby stores rarely work.
And why two candles that look identical can burn completely differently.
⭐ 2. The Four Things We MUST Know Before Recommending a Wick
1. What kind of wax are you using?
Different waxes burn differently.
This affects wick size, wick family, and overall performance.
- Beeswax – dense, slow‑burning, needs hotter wicks
- Soy wax – cooler burn, often needs larger wicks
- Coconut wax – cooler burn, smaller wicks in many cases
- Container paraffin – hotter burn, smaller wicks
- Pillar paraffin – needs stability and heat control
Knowing your wax helps us narrow down the wick families that will actually work.
2. What is the exact diameter of your candle?
This is critical.
Every ¼ inch can change the wick size in many wick families.
When measuring a container, measure the inside diameter, not the outside.
The outside can add up to an inch — which will absolutely throw off your wick choice.
3. What is the height of the container?
Height is the least important factor, but it still matters.
Height only becomes a major issue when the container is under 2 inches.
Short containers trap heat differently, which affects how the wick burns.
For more information on "Trapped Heat"
4. And most importantly… what fragrance oil are you using?
Fragrance oils have a huge impact on wick performance.
Some thin the wax.
Some thicken it.
Some burn hot.
Some burn cool.
Some clog wicks.
Some accelerate melt pools.
Some make the the candle system more basic. Some make the candle system more acidic. Either of which can deteriorate wicks if the wicks are not treated properly. For more information read the difference between CD and CDN wicks.
If you’re using our fragrance oils, we’ve already tested every single one and created a fragrance‑specific wick chart to help you choose the right wick.
👉 Candle Cocoon fragrance oils collection here.
👉 fragrance‑specific wick chart
If you’re using another supplier’s fragrance oil, run a "base wick" test using your main wax. That can give you a starting point. Our base wick in a 3" diameter 3" tall glass container using Golden Brands 464 is a CDN14 and using Blended Wax 917 is it a CD8. From this point we know that we can test more closely to this size.
⭐ 3. Why Fragrance Oils Change Wick Size
Fragrance oils contain:
- solvents
- fixatives
- aromachemicals
- natural extracts
- resins
- essential oil components
Each one interacts with wax differently.
This is why:
- one FO may need a CD‑12
- another FO in the same wax and jar may need a CDN-18
Even if everything else is identical.
This is also why your FO‑specific wick chart is such a powerful tool.
⭐ 4. How to Use Candle Cocoon’s FO‑Specific Wick Chart
Your chart helps makers:
- skip guesswork
- skip wasted wax
- skip wasted wicks
- skip frustration
- get a safe, clean burn faster
But even with the chart, variables like:
- pouring temperature
- fragrance load
- wick placement
- cooling environment
- wax blend
- dye usage
…can still affect the final burn.
So always test.
👉 Candle Cocoon Fragrance Oil Specific Wick Chart.
⭐ 5. How to Test Burn a Candle Correctly
A proper test burn includes:
- trimming the wick to ¼ inch to start
- correct burning time
- checking melt pool depth
- checking flame height
- checking soot
- checking mushrooming
- checking jar temperature
- repeating over multiple burns
👉 How to TEST
👉 Link to a full “How to Test Burn” article.
⭐ 6. Common Wicking Mistakes
- Using outside diameter instead of inside
- Ignoring fragrance oil behavior
- Using hobby‑store wick packs
- Testing only one burn
- Not trimming the wick
- Using too much dye
- Overloading fragrance
- Pouring too hot or too cold
Each of these can make a good wick look like a bad one.
⭐ 7. Wick Families and When to Use Them
You can expand this section with your own wick families. Here’s a template:
CD Wicks
- Great for coconut wax (BW917) and paraffin
- Strong curl
- Good for basic or neutral candle systems
CDN Wicks
- Great for soy
- Self trimming
- Good for acidic candle systems
ECO Wicks
- Flat braid
- Good for paraffin and blends
- Cleaner burn
HTP Wicks
- Paper thread = hotter burn
- Good for containers
LX Wicks
- Low mushrooming
- Good for paraffin
⭐ 8. Troubleshooting: What Your Flame Is Telling You
Tiny flame
Wick too small or wrong wick family.
Huge flame
Wick too large or wrong wick family.
Sooting
Wick too large or FO clogging. May need a different wick family.
Tunneling
Wick too small or wrong wick family.
Mushrooming
FO chemistry or wick too large or wrong wick family.
Overheating jar
Wick too large.
⭐ 9. Wick FAQ
How do I know if my wick is too small?
You’ll see tunneling, a tiny flame, or a shallow melt pool.
How do I know if my wick is too big?
High flame, soot, or an overheated jar.
Do fragrance oils really change wick size?
Yes — dramatically.
Can I use the same wick for all my candles?
Yes and No. Every FO behaves differently. If you only want to use a specific wick you need to test each FO to ensure that it works with that wick. This can be very limiting and time consuming to find FOs that work with only that one wick. On the other hand, wicks are fairly inexpensive and having a wide assortment on hand can help with just about every candle system need.
Do I need to test burn every candle?
Yes — even with a chart, variables matter.
⭐ 10. Final Thoughts
Wick selection isn’t guesswork — it’s science, testing, and experience.
But with the right information, you can skip the frustration and get straight to making beautiful, clean‑burning candles.
Happy Candle Making!
About the Author — Lyschel Bersch, Founder of Candle Cocoon
For more than two decades, Lyschel has been studying the chemistry of candles — not just how they burn, but why they burn the way they do. As the owner of Candle Cocoon, she has personally tested thousands of wick, wax, and fragrance oil combinations, building one of the most accurate fragrance‑specific wick charts in the industry. Her work blends science, safety, and artistry, helping makers understand the “why” behind candle behavior so they can create cleaner, safer, more reliable candles. When she’s not testing wicks, she’s developing high‑purity fragrance oils and teaching makers how to elevate their craft through knowledge, not guesswork.