The Truth About Soot

Many people are taught that paraffin wax is the only wax that will soot. Of course, that's wrong. Many things can cause sooting, and some have nothing to do with the candle. As a candlemaker, I have tested products to make sure they meet my standards. I also want to educate customers about candle care and why it's so important.

Sooting can happen for many reasons. When a wick is too big, it will cause sooting as it pulls wax too fast, causing it to burn quicker and unevenly. The type of wax also matters. Yes, paraffin has a higher chance of sooting than other waxes, such as soy and beeswax, but natural waxes wick too.

But, why would there be black around the rim? Well, here are some ways to prevent that.

1. Candle burning time: Burning a candle for more than 4 hours will create that black rim we can't get off our fingers. Many candlemakers always set a 4-hour time limit to prevent soot.

2. Not trimming the wick: The wick has a lot to do with candle burning as it's the main source of creating the smell. Wicks are supposed to be 1/4 inch tall. Any taller and the flame will be too big creating a chance for soot.

3. Drafts: Drafts are another cause of sooting.It seems like a good idea to put a candle next to a fan or vent, but it will have negative effects. The fire burning and dancing can cause sooting on the rim.