Apple skin is the outer layer of an apple, a popular fruit known for its crisp texture and sweet or tart flavor. This skin serves several important functions, including protecting the fruit from pests and diseases, as well as helping to retain moisture. The color of apple skin can vary widely, ranging from red to green to yellow, depending on the variety. In addition to its protective role, apple skin is rich in nutrients. It contains dietary fiber, which aids in digestion, and is also a source of antioxidants, which can help combat oxidative stress in the body. Eating the skin can enhance the overall health benefits of consuming apples.