Coconut Soy vs Paraffin Wax: What Actually Makes a Difference

The wax a candle is poured with affects three things you will actually notice: how long it burns, how well it carries fragrance, and how evenly it melts. Coconut and soy waxes burn more slowly and at a lower temperature than paraffin, which generally means longer burn times and a gentler scent release. Paraffin holds a very high fragrance load and throws strongly and quickly, but burns faster. Neither is universally better, and a lot of what gets said about wax online is marketing rather than chemistry.

What paraffin wax is

Paraffin is a by-product of petroleum refining and has been the dominant candle wax since the nineteenth century. It is inexpensive, consistent from batch to batch, holds colour and fragrance oil extremely well, and has a relatively high melting point.

Practically, that means a paraffin candle tends to fill a room quickly and forcefully. The trade-off is speed: the higher melting point means the wax is consumed faster, so a paraffin candle of a given weight will generally burn for fewer hours than a natural wax equivalent.

What soy wax is

Soy wax is made by hydrogenating soybean oil into a solid. It has a noticeably lower melting point than paraffin, which is why soy candles typically burn longer and cooler.

Pure soy has two well-known quirks. It is prone to frosting, the white crystalline bloom that appears on the surface as the wax cools, which is purely cosmetic. And it can be temperamental about adhesion, sometimes pulling away from the glass in patches, known as wet spots. Neither affects performance, but both are why very few premium candles use soy entirely on its own.

What coconut wax adds

Coconut wax is made from the oil of the coconut kernel. It is softer and creamier than soy, has an even lower melting point, and is generally regarded as the best natural wax for holding and releasing fragrance oil.

It also produces a smoother, more uniform surface, without the frosting soy is prone to. On its own it is too soft to hold a candle's shape reliably in a jar, and it is considerably more expensive, which is why it is almost always blended.

Why most good candles use a blend

A coconut and soy blend takes the fragrance-carrying capacity and smooth finish of coconut wax and gives it the structural stability and lower cost of soy. The result burns slowly and evenly, holds a high fragrance load, sets to a clean flat surface and adheres properly to the glass.

This is the blend we use for every Mallow and Moo candle, and it is the reason our gourmand fragrances carry across a room without ever becoming sharp. A lower burn temperature releases fragrance more gradually, which suits complex scents built from layers of notes rather than a single dominant one.

On soot and clean burning

You will read a great deal online about natural waxes being clean and paraffin being harmful. It is worth being careful here, because the evidence is more nuanced than the marketing suggests. All candles produce some soot when burned, regardless of wax.

What genuinely reduces soot is not the wax type so much as how the candle is made and used. A correctly sized wick, a well-formulated wax, an untrimmed wick trimmed back to 5mm, and a spot away from draughts will do far more for a clean burn than the label on the tin. Natural waxes burn cooler, which helps, but any candle with an overlong wick in a draughty hallway will mark the glass.

What to look for when you are buying

Check the wax is actually stated. Vague terms like natural wax blend or premium wax can mean almost anything, including a majority-paraffin mix with a little soy added.

Check the weight rather than the jar. A wide, shallow jar can look generous and hold considerably less wax than a narrower one.

And be a little sceptical of enormous claimed burn times. Burn time depends on how the candle is used as much as what it is made of. A candle burned in four-hour sessions with a trimmed wick will last far longer than the same candle burned all day.

All Mallow and Moo candles are hand-poured in England using a coconut and soy blend, and every product we make is vegan and cruelty free.