Subject: What is the best way to slow/stop the flame from burning on a candle?

Is it the wax that slows up/ down the burning process on a candle? If 
so, what would have to be used to make the candle burn incredibly 
slow(eg.different kind of wax/what kind of compound;thicker/thinner 
wick). Does the wick have anything to do with it? I have always wanted 
to know.
Thank you for your time.
Sincerely,

Karolyn Smith

Re: What is the best way to slow/stop the flame from burning on a candle?