How long can Shunxing candles last?

I think you mean scented candles. Here are some suggestions.

Aromatherapy candles generally burn for three to four hours, and aromatherapy candles can burn for three to four hours at a time, which is enough to make aromatherapy candles form a beautiful wax pool and make the fragrance rich enough. Aromatherapy candles burn for too long, the fragrance will get stronger and stronger, and it is not good to smell too much.

First burning time of aromatherapy candle

When incense sticks are used for the first time, they must be burned for at least one hour, and then a flat wax pool is burned out. In this way, the candle will burn smoothly and there will be no ugly tunnel phenomenon. The aromatherapy candle of tunnel phenomenon is also a waste to some extent.