The first burn matters most
Let the wax melt all the way to the edge the first time, about 2–3 hours. Otherwise it tunnels and you lose wax down the sides.
Trim the wick
Trim to about ¼ inch before every burn. A long wick smokes and blackens the jar.
Don’t burn more than 4 hours
Blow it out, let it cool for two hours, then relight.
When to stop
Stop when there’s about ½ inch of wax left. Then send the jar back for our refill program.