Melting Beeswax Without Ruining It

Beeswax isn’t hard to melt. It’s hard to melt badly enough to notice, which is a different problem. The wax comes out a shade darker and smelling of nothing, and unless you’ve melted a batch properly before, you don’t know that’s what happened. So here’s how to melt beeswax without doing that to it.

Two numbers cover most of it. Everything else on this page hangs off them.

The two numbers

Beeswax melts between about 143 and 145 degrees Fahrenheit. Above 185 it discolors, and that change is permanent.

Both figures come from the Mid-Atlantic Apiculture Research and Extension Consortium at the University of Delaware, which has been publishing on wax for decades and is worth reading if you work with a lot of it.

The gap between those numbers is your working window, and it’s forty degrees wide. That sounds like plenty. It isn’t, once you know where the heat actually goes.

Never over a direct flame

Beeswax is flammable. It will catch, and a wax fire behaves like a grease fire, so water makes it worse.

A pot of wax straight on a burner has flame touching metal on one side and wax touching metal on the other. The wax at the bottom is hundreds of degrees hotter than the wax on top. It’s scorching long before your thermometer notices, and if you walk away it will smoke and then light.

This is the one rule on this page with no exceptions. Water goes between the heat and the wax, every time.

The double boiler

A double boiler is a pan of simmering water with a second pot sitting in it. Water boils at 212 and can’t go higher at normal pressure, so the wax can’t pass that either. That puts a ceiling on how wrong things can go.

You don’t need a purpose-made one. A stainless bowl over a saucepan works. So does a glass jar or a clean tin can standing in a pan of water. The can is what I’d suggest for anyone melting wax for the first time, because you can throw it away instead of cleaning it.

Two things to watch. Don’t let the water boil dry, which is easy to do over an hour and turns your double boiler into a direct flame. And keep water out of the wax, because a drop of water in hot wax spits.

A slow cooker on low is good for this too. It holds the right range without you standing over it.

The thermometer is reading the middle

A pot reading 160 in the middle can be past 185 against the wall and the bottom. That difference is where nearly all mystery discoloration comes from.

Stirring fixes it, and it isn’t optional. It moves the hot wax off the metal and into the middle before it has time to cook. Cut the wax into smaller pieces before it goes in too, because a solid slab means the metal is heating wax that isn’t moving yet.

If you have a thermometer, put the probe near the side instead of dead center, since the side is where trouble starts. If you don’t have one, watch the wax instead of the clock. It should look like clear oil and sit still. Any wisp of smoke means you’re already too hot.

What overheating does

Color goes first. Gold shifts toward brown, and it doesn’t come back.

Smell goes next, and for a candle that’s the one that matters. Most of what you’re buying beeswax for is that faint honey smell when it burns, and it comes from aromatics that boil off. Some start leaving as low as 170. Cook a batch to 200 and you’ve made an expensive unscented candle.

Past that it smokes, and past that it catches.

None of this makes the wax dangerous or useless. An overheated batch will still burn and still make a decent polish. It just isn’t the thing you paid for anymore.

Cleaning up

Wipe the pot while it’s still warm. A paper towel takes almost all of it off in one pass. The same pot cold takes twenty minutes and steel wool.

Never pour wax down a drain. It sets in the trap, and it sets on the way there, so you get a blockage in the least reachable part of the pipe. Pour leftovers into a paper cup or an old tin and let them set, then keep the disc for next time.

Keep one pot for wax and use it only for wax. It’s easier than cleaning, and the pot gets better at the job every time.

If it catches fire

Turn the heat off. Cover the pan with a lid or a baking sheet to cut off the air. Don’t throw water at it and don’t move it.

Baking soda smothers a small one. A fire extinguisher rated for grease handles a bigger one. If it’s beyond a lid and a box of soda, get out and call the fire department, because a wax fire spreads along whatever it splashes onto.

This section is short on purpose. It almost never happens to people who use a water bath, and it happens fairly often to people who don’t.

Mixing it with oils and butters

Most of what people melt wax for isn’t pure wax, and the order you combine things in matters more than the recipe usually says.

Wax melts higher than everything else you’re likely to add. Oils, butters, tallow and coconut oil all go liquid well below 145 degrees, so the wax goes in first and on its own. Everything else joins it once the wax is fully clear.

Add the oils to the wax, not the wax to the oils. Cold oil poured into hot wax seizes lumps of it instantly, and you spend the next ten minutes trying to remelt bits that are now sitting in a mixture too cool to do it.

Take anything delicate off the heat before it goes in. Vitamin E, and anything you’re adding for what it does rather than for texture, wants the lowest temperature you can get away with.

If a mixture sets too soft, add wax. Too hard, add oil. Test it before you pour the batch. Put a teaspoon on a cold plate, wait two minutes, and feel it. That one test has saved more batches than any recipe.

Keep notes of the ratios by weight. A recipe you liked and can’t reproduce is worse than one that didn’t work.

One more thing about your wax

If you buy wax that was already overheated by whoever processed it, none of this will save you. It arrives dark and smelling of very little.

Ours is poured into slabs off the comb and it’s never been near a direct flame. It’s sold in two grades, and if you’re melting it for candles you want the filtered one. The reasons are in Filtered or Unfiltered Beeswax?. If you’re still working out how many pounds to buy, How Much Beeswax Do You Need? has the tables.