Yes, you can use chapstick as a candle. If it doesn't burn too quickly, you can use a string or a matchstick as a wick. Stick it in the balm, lip gloss, or lipstick after coating the wick with chapstick wax. Ensure the wick is planted slightly off-center and that it is kept short. The flames will melt the plastic lip of the container, so you can only use the chapstick candle for a short time.