Types of Candle Wicks Explained (and How to Choose)
If you've ever stood in front of a candle supply listing wondering why there are so many wick options — ECO, CD, HTP, wooden, flat braid, square braid — you're not alone. Choosing the wrong wick is one of the most common reasons beginner candles tunnel, produce a weak flame, or leave a sooty mess on the jar. Before you pour a single drop of wax, it's worth understanding what each wick type actually does.
As we covered in our guide to the best candle making kits for beginners, the wick is often the most overlooked part of a candle supply list — and yet it controls almost everything about how your candle burns. The wick determines how big the melt pool gets, how much fragrance is thrown into the room, and whether you end up with a clean, even burn or a smoky, flickering disappointment.
This guide breaks down every major type of candle wick, explains when to use each one, and walks you through how to size a candle wick for your specific wax and container. By the end, you'll know exactly which wick to reach for on your next pour.
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The Main Types of Candle Wicks
Before you can choose the right wick, you need to understand what's actually available. Candle wicks are not one-size-fits-all — they differ in material, construction, and intended wax type. Here's a breakdown of every major wick type you'll encounter as a beginner.
Cotton Wicks
Cotton wicks are the most common type of candle wick, and for good reason: they're versatile, easy to work with, and widely available. Most beginner-friendly wick series — including the ECO series, CD series, and HTP series — are built on a cotton or cotton-blend core.
Within cotton wicks, there are several constructions:
- Flat braid wicks — The most traditional style. The flat braid curls as it burns, which helps the wick self-trim by keeping the tip in the flame. These are common in taper candles and some pillar candles.
- Square braid wicks — A thicker, more rigid braid that holds up well in beeswax and harder waxes. Less common for soy beginners but worth knowing about.
- Cored wicks — These have a paper, cotton, or zinc core inside the braid that keeps the wick stiff and upright. Common in jar candles and votives. Most pre-tabbed wicks you buy for container candles are cored.
ECO Series Wicks
ECO wicks are a specific brand of pre-waxed cotton wicks with a paper core. They're engineered to curl slightly as they burn — which makes them naturally self-trimming — and they're particularly well-suited to soy and coconut wax blends. The ECO numbering system (ECO 2, ECO 4, ECO 6, etc.) corresponds to increasing wick sizes, with larger numbers for larger container diameters. Check out our best candle wicks for soy guide for a deeper comparison of ECO wicks versus other cotton options.
CD Series Wicks
CD wicks are flat-braided cotton wicks with a paper core. The CD designation stands for "coreless double-coated" — they have a light wax coating that helps them ignite easily and burn cleanly. They're popular in soy container candles because they perform well in highly fragranced blends without mushrooming as badly as some other wick types.
HTP Series Wicks
HTP wicks (Hemp, Thin Poly) are woven with a stiffer braid that keeps the wick standing straight throughout the burn. This rigid construction reduces the need for manual trimming between burns and produces a very consistent flame height. HTP wicks are among the most versatile — they work across soy, paraffin, gel, and vegetable waxes.
Wooden Wicks
Wooden wicks are flat strips of wood (usually cherry or birch) that produce a wide, low flame with a distinctive crackling sound. They've grown in popularity as the "luxury candle" aesthetic has spread, and they're a genuinely beautiful option — but they come with a more demanding sizing and testing process than cotton wicks. Wooden wicks also work best in soy, coconut, and softer wax blends; they can struggle in harder waxes without generating enough heat to maintain a full melt pool.
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How to Size a Candle Wick
Learning how to size a candle wick is arguably more important than picking the right wick series. Even the best wick in the world will perform poorly if it's the wrong size for your container.
Here's how to approach wick sizing as a beginner:
Step 1: Measure Your Container Diameter
Measure the inside diameter of your container at its widest point. This is your starting reference number. Most wick series publish charts that map container diameters to recommended wick sizes.
Step 2: Factor in Your Wax Type
Different waxes have different melt points and densities, which affects how much heat the wick needs to generate. As a general rule:
- Soy wax — burns cooler, so you may need a slightly larger wick than you'd expect for the jar size.
- Paraffin — burns hotter and more efficiently, so a smaller wick often works fine.
- Beeswax — very dense; typically needs a thicker wick (square braid or large ECO size).
- Coconut wax — similar to soy; often pairs well with ECO or CD wicks.
Step 3: Account for Fragrance Load
Fragrance oils affect wick performance. A heavily fragranced soy candle (10–12% fragrance load) will often require a slightly larger wick than an unscented version of the same candle, because the oil thickens the wax and makes it harder to draw up through the wick.
Step 4: Burn Test — This Is Non-Negotiable
No wick chart is a substitute for a proper burn test. After pouring your test candle, let it cure for at least 24–48 hours, then burn it for one hour per inch of container diameter. A correctly sized wick should produce:
- A melt pool that reaches the edges of the container within 2–4 hours
- A flame that's steady, upright, and between ½ inch and 1 inch tall
- Minimal mushrooming or carbon buildup at the wick tip
- No excessive smoke or soot on the jar walls
If the melt pool doesn't reach the edges, your wick is too small. If the flame is too large, flickering, or producing a lot of soot, your wick is too big. Adjust by one wick size up or down and test again.
Step 5: Test Multiple Wicks Side by Side
Experienced candle makers always test at least 3 wick sizes simultaneously — one they think is right, one size up, and one size down. This saves time and gives you a clear comparison. This is exactly why wick packs of 100 are so useful; you'll go through more wicks than you'd expect during the testing phase.
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Which Wick Type Should You Start With?
If you're making your first batch of soy container candles, the ECO or CD series is the safest starting point. Both are widely supported, with wick charts available from most wax suppliers, and both perform cleanly in standard soy wax blends.
If you're working with paraffin or a mixed wax blend, the HTP series is worth testing — its versatility across wax types makes it easier to work with if you're not yet committed to a single wax.
Wooden wicks are best saved for once you're comfortable with the basics. They're rewarding to work with, but the extra troubleshooting involved can be frustrating when you're still learning the fundamentals.
Whatever wick type you choose, always buy a variety pack or a large pack of a single size so you have enough for proper burn testing. Rushing to production before you've completed at least three test burns is one of the most common beginner mistakes — and the one most likely to result in a batch of candles that don't perform the way you hoped.
Frequently asked questions
- Cotton wicks — particularly the ECO series and CD series — are the most beginner-friendly options. They're widely available, come pre-tabbed with metal bases, and are supported by wick sizing charts from most major wax suppliers. If you're making soy container candles for the first time, start with an ECO 4 or CD10 and adjust based on your burn test results.
- Both ECO and CD wicks are pre-waxed cotton wicks designed for soy container candles, but they're constructed differently. ECO wicks have a paper core and are engineered to curl slightly as they burn, which helps them self-trim. CD wicks are flat-braided with a paper core and are known for minimizing mushrooming in heavily fragranced soy blends. Both are good choices — many candle makers test both to see which performs better with their specific wax and fragrance combination.
- Wooden wicks are more challenging than cotton wicks because they're harder to size correctly and can be difficult to relight if the initial melt pool doesn't form properly. They also require careful wax selection — they work best in soy and coconut waxes. If you're just starting out, we recommend learning the basics with cotton wicks first and then experimenting with wooden wicks once you're comfortable with burn testing and wick sizing.
- A correctly sized wick will produce a melt pool that reaches the edges of the container within 2–4 hours of burning, a steady flame between ½ and 1 inch tall, and minimal mushrooming or soot. If the melt pool stays in the center and doesn't reach the edges (tunneling), your wick is too small. If the flame is very large, flickering, or producing black soot on the jar, your wick is too big. Adjust by one wick size and retest.
- Not always. Wick series like HTP are designed to work across multiple wax types (paraffin, soy, gel, vegetable wax), but most wick series are optimized for a specific wax. ECO and CD wicks, for example, are designed for soy and natural waxes and may not generate enough heat for denser waxes like beeswax. Always check the manufacturer's recommendations and conduct a burn test whenever you change your wax type, even if you keep the same wick series.
- Yes. Wooden wicks should be trimmed to about ¼ inch before each burn to prevent an overly large flame and ensure a clean, crackling burn. If you don't trim a wooden wick, the excess charred wood at the tip can create a wide, uncontrolled flame or cause the wick to struggle to stay lit. Use sharp scissors or a wick trimmer and remove any loose charred debris from the wax surface before relighting.
What is the most common type of candle wick for beginners?
What's the difference between ECO and CD wicks?
Are wooden wicks hard to use for beginners?
How do I know if my candle wick is the right size?
Can I use the same wick for different wax types?
Do I need to trim wooden wicks before every burn?
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Types of Candle Wicks Explained (and How to Choose)
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