Why is the flame of a candle pointed?

The flame of a candle is produced when the wax of the candle melts due to heat and the molten wax rises in the wick. It gets vapourised at its tip, and the vapour starts burning. The chemical reactions that occur are quite complex, giving rise to various colours and different zones of the flame. As the heated gas rises above from the base of the flame, it moves faster and faster, as the pressure decreases from the base to the top. As the rate at which the gas is released from the base is more or less constant, the flame becomes thinner and thinner from its base to the end, assuming a pointed tip and acquires the shape of a teardrop.