Apple's antioxidant property prevents cell and tissue damage. Studies by nutritionists have shown that apples contain abundant amounts of elastin and collagen that help keep the skin young. Applying a mixture of mashed apple, honey, rose water and oatmeal can act as a great exfoliating mask on your face. [source]
Apples not only hydrate but also cleanse the skin. Cover your face with apple slices (the apple needs to be cut fresh, just before you want to use it) and leave them on until slices are dry, for at least about 15 to 20 minutes. The vitamin E in the apple will keep the skin soft and hydrated.[source]