Disease analysis: not suitable for wiping face. It is generally recommended to rub cucumber slices or watermelon skins outside to replenish water, but the high concentration of pitaya should not be applied to the face as much as possible.

Suggestion: Pitaya is rich in nutrition. If you think it's wasteful, you can scrape off the purple peel with a knife-they can be eaten raw, cold, or squeezed with sugar, which will taste better after refrigeration.