Benzene is a harmful chemical that can show up in skincare products through contamination or chemical reactions during manufacturing and storage.
Skincare items like sunscreens, lotions, and face creams often contain preservatives such as sodium benzoate to keep them fresh and free from bacteria. When sodium benzoate mixes with ascorbic acid, which is vitamin C used for its antioxidant benefits, they can react to form benzene under certain conditions like heat, light, or specific pH levels. This combination is common in products aiming to brighten skin or fight aging.
Another source comes from benzoyl peroxide, or BPO, found in acne treatments. BPO breaks down over time and can release benzene as a byproduct, especially if the product is not stored properly or if it degrades during use.
Contamination during production is a bigger issue in sunscreens and after-sun sprays. Independent tests have detected benzene in sprays from brands like Neutrogena, Aveeno, and Coppertone, even though it is not an intentional ingredient. This likely happens from impurities in raw materials or equipment used in factories. Levels in some products exceeded safe limits set by health regulators, leading to recalls.
Dry shampoos and deodorants, which sometimes overlap with body care, have faced similar problems, but the pattern holds for liquid skincare too. Benzene forms more easily in spray formulas because propellants or solvents can carry trace amounts.
Health experts note benzene as a known cancer risk, linked to leukemia and lymphoma with long-term exposure. It absorbs through the skin, so repeated use of contaminated products raises concerns. Regulators recommend zero benzene in cosmetics since it serves no purpose.
To lower risks, check labels for sodium benzoate paired with vitamin C, or BPO in acne items. Opt for products tested by third parties and avoid sprays if possible. Manufacturers now reformulate to prevent these issues after public alerts.
Sources
https://gimmethegoodstuff.org/blogs/guides-and-product-reviews/safe-face-cream-guide
https://www.aboutlawsuits.com/sunscreen-recall-cancer-lawsuit/
https://www.consumerlab.com/answers/cancer-causing-compounds-benzene-benzophenone-in-sunscreen/carcinogens-sunscreen/
https://pmc.ncbi.nlm.nih.gov/articles/PMC12727622/
