Peaches are next in the line of thinly skinned fruits, which consequently become a fruit that ought to be bought organic. The pesticides, fungicides, etc., actually sink into the fruit, which are hard to remove through washing. Peeling the fruit won't help, and at the same time, removes all the nutrients from it. Watermelon, grapefruit, tangerines, and oranges are the best options if you are unable to find organic peaches.