How do candle wicks “keep up” with the decreasing wax depth in a candle?

Question

How do candle wicks “keep up” with the decreasing wax depth in a candle?

In: Other

Answer 1

If the wick is too long for the wax to reach the top, the wick itself burns. Once the wick is short enough that the melting wax can climb up it (via capillary action), then the wax will burn instead of the wick.