Acne varies from mild to severe. Mild forms include blackheads and whiteheads, categorised as mild inflammatory acne.
The FDA tested 95 products containing benzoyl peroxide, an ingredient widely used to treat acne that can form benzene as a byproduct. It found that six products could have more benzene than usual.
Parent company La Roche-Posay has pulled the Effaclar Duo Acne Spot Treatment from L'Oreal's lineup, due to a cancer-causing carcinogen contamination.