Trim your wick
Keep wick(s) trimmed to the length of 0.5cm. Light the wicks (if more than one) all at the same time.
Before you light a candle, you should always trim the wick to around 0.5cm long. You can use a wick trimmer, scissors, but remember to do it every time you burn your candle. Properly trimmed wicks burn brighter and cleaner with less smoke and won’t leave black soot stains on the inside of the vessel.
Let the wax melt almost completely
When burning the first time, allow the liquid layer on top, reach the very edges of the vessel to prevent candle tunneling.
Now that your candle is burning, don’t put it out until the wax has melted and pooled to the edges of the vessel. In other words, most of the top layer of the candle should be liquid wax. This might take 3-4 hours, depending on your candle. Letting the top pool helps keep the wax from tunneling and melting unevenly.
Do not let the candle burn too long
Burn your candle not longer than 4 hours at a time.
You don’t want to burn a candle for longer than four to six hours. Burning a candle for too long can cause the candle to get too hot and for safety reasons it is better to not let that happen.
Do not blow it out
Extinguish your candle carefully, always using a candle snuffer to prevent the trim sticking in.
When you blow out a candle, it sends black ash particles flying into the melted wax. Instead, use a candle snuffer or replace the cover of the candle on top to gently extinguish the flame.
Choose the right spot
Always burn your candles within sight. Keep candles away from direct sunlight, high temperature, things that catch fire and away from children and pets.
Place your candle on a level, non-flammable surface that’s away from curtains or any other type of fabric. You should also keep your candle away from moving air caused by fans, open windows, or people walking back and forth frequently—this helps the candle burn evenly.
Never burn your candle till the very end, leave 2cm of wax
Prevent potential heat damage by discontinuing use, when 2cm of wax remains at the bottom of the vessel.
Never burn your candle when it has two centimeters of wax left. Lighting your candle without sufficient wax can cause the glass to overheat and burst.