Some of the more common fruits used in face packs are papaya, peach, and banana. As someone else has mentioned good hydration is very important to healthy skin, so drinking lots of water will help with dry skin.
The single greatest factor affecting dry skin is hydration, so eating watermelon makes good sense, since the vast majority of that fruit is water. Same goes for pineapple and oranges, and anything with Vitamin-E.
Some people believe that putting a mask of mashed up fruit on your face is good for dry skin. They claim that kiwi fruit is good for this. They also talk about papayas and bananas being used in this way. Other people argue that mangosteens are good for dry skin (but they are supposed to be eaten, not applied to the skin).
Apples are also recommended for those who have dry skin. Apple juice packs, applied to your face, has the effect of lifting .
Peaches nourish the skin and regenerate. To obtain a shiny skin, apply the juice of a peach on your face and let it act for 10 minutes.
Avocado nourishes and tones the skin. A nourishing mask can be made from avocado pulp, a bit of lemon juice and a teaspoon of honey. Apply the mask on your face and leave it for 15 minutes, then rinse it with warm water.