Fruit acids, also known as alpha-hydroxy acids (AHAs), are natural acids found in various fruits. Common examples include citric acid from citrus fruits, malic acid from apples, and lactic acid from milk. These acids are often used in skincare products for their exfoliating properties, helping to remove dead skin cells and promote a smoother complexion. In addition to their cosmetic benefits, fruit acids can also enhance the flavor of foods and beverages. They contribute to the tartness of fruits and are often used in cooking and food preservation. Overall, fruit acids play a significant role in both beauty and culinary applications.