The lemon juice made by juicer should be peeled, and the lemon juice made by mask should be stored in cold storage because Vc is easy to oxidize. The best storage period is about three days.

In addition, you can also soak fresh lemons in water without peeling, and put the rest in the refrigerator. The advantage of this is that the storage period can be extended to about one week, and the effect will not be bad!