Citric acid exfoliates the skin, thereby unclogging pores and removing dead skin cells from the surface. This, in turn, promotes new skin growth that can remove age spots, pimple scars, and blemishes. It also prevents the build-up of dead cells that lead to blackheads and dry patches.
Manufactured citric acid is one of the most common food additives in the world. It's used to boost acidity, enhance flavor, and preserve ingredients (5). Sodas, juices, powdered beverages, candies, frozen foods, and some dairy products often contain manufactured citric acid.