I power burn only when I`m home all day. I light mine in the morning and let it go untill bedtime. I used to let mine go all night but stopped after a person I know lost thier home to a fire caused by a candle left burning all night( not one of mine).
I`ve ran into that problem. It`s not the heat it is a bad product. Try and get your money back, If you can`t try mixing with white M&P for a little more lather( this is how I used up a small batch of mine).