Citric acid is best known as an effective chemical exfoliant for removing dead cells. Getting rid of these cells unclogs pores and improves your complexion for a fresh and regenerated look. It can help to dry out excess oil for oily skin types, while still being less harsh on your skin than other acids.
As the name suggests, citric acid is a plentiful ingredient found in citrus fruits like oranges, lemons, and grapefruit. It's an alpha hydroxy acid which are plant and animal-derived acids mainly used for exfoliating.
Citric acid works well with many skin types but is especially good for oily skin. Those with extremely sensitive skin or anyone using a retinoid should avoid it as it may cause undesirable irritation.