Experts suggest that many people, after buying lychees, often peel and eat them directly, believing that the flesh can be eaten without deliberate washing. In fact, lychees are often picked in bunches, and their skins can be covered in dust and bacteria. Additionally, some growers may use chemicals to treat the fruit to extend its shelf life, so the lychee skin may also contain sulfides. It is particularly important not to bite directly into the skin without washing it. Before eating, they must be thoroughly washed under running water. You can wash them in the bunch, or use scissors to snip them off with the stem and then wash them.
Scientific Storage: If you cannot finish the lychees immediately after buying them, they should be washed, placed in a fresh-keeping bag, and then refrigerated. They should be stored separately from raw meat and other foods to prevent them from absorbing odors. If refrigeration is not available, they should also be kept in a cool place and consumed within two to three days. If you find the lychees have darkened in color and the flesh has turned dark brown, it means they have been stored for too long and are no longer edible.