What fruit is malic acid derived from?

Malic acid is a naturally occurring organic acid that is predominantly found in apples, which is why the correct answer is apples. This acid contributes to the sour flavor of the fruit and is also present in various other fruits, including pears, though in smaller amounts. Malic acid plays a significant role in the fruit's metabolism and is widely utilized in various food products and cosmetic formulations for its beneficial properties, such as exfoliation in skincare. Understanding the sources of malic acid, particularly its abundant presence in apples, is crucial for estheticians and professionals working with skin care formulations, as it can inform ingredient selection for treatments that benefit from its properties.