Citric acid is a weak organic acid that occurs naturally in produce, such as citrus fruits. It is used in food, cosmetics, and cleaning products. Share on Pinterest vkbhat/Getty Images Citric acid is ...

The list of skin-care products formulated with alpha-hydroxy acids (AHAs) is pretty lengthy. Differentiating each acid can be quite confusing, especially when you're simply looking for one product ...

Paola Velez shares her tips for working with this game-changing ingredient. Citric acid is a weak organic acid found in citrus fruits, as well as other produce. It has a sour flavor — which is why ...