On the first burn, make sure you burn your soy candle until the entire surface has turned into liquid wax. This will ensure consistent melt on subsequent burns and prolong the life of your candle.
To ensure an even and smoke-free burn, trim cotton wicks to 7mm prior to each lighting and remove any 'bloom' from the previous burn.
Keep wax pool clear of wick trimmings, matches, water, debris/foreign objects.
Burn no less than 1 hour and no more than 4 hours at a time.
Discontinue use when 10mm of wax remains. It is time for a new candle and upcycle your glass vessel.