Once a fragrance candle has burnt down it's wick, I can't bear to throw away the beautiful glass containers remaining. So it gets cleaned out and recycled as containers for my makeup brushes and lip glosses. As you can see, I only have 4 right now. That is because untempered glass breaks when the wick is too long and the flame gets too big. That usually happens when you try to burn a candle down to it's last centimetre.