All of our candles are hand-poured into their custom vessels as liquid wax, so when they are first poured the wax fully sticks to the interior of the vessel. When temperatures change, the wax and glass expand and contract at different rates, causing the illusion that there are areas of missing wax. This is common to all candles and is known as ‘pull away’, as the wax contracts (pulls away) from the vessel ever so slightly. We can assure you it does not affect the candle, or the burn time in any way. When you burn the candle, the wax will warm up and naturally overcome this issue.