Zinc Peroxide

Zinc peroxide is an inorganic compound that acts as an oxidising agent in skincare formulations. It releases oxygen when in contact with skin, which forms the basis of its proposed antimicrobial action. The ingredient has a history of use in topical treatments, though modern formulations tend to favour other zinc derivatives and acne-fighting actives.In skincare, zinc peroxide is primarily used for its potential to address acne and scalp conditions. However, the evidence base for this specific ingredient is limited compared to other acne treatments, and it remains less common in contemporar…

Zinc peroxide works by releasing oxygen when applied to the skin surface. This oxidising effect creates an environment less favourable for bacterial growth, particularly organisms associated with acne and scalp conditions. The mechanism is straightforward chemistry rather than a complex biological interaction.It is worth noting that whilst zinc itself has demonstrated benefits for acne (particularly in inflammatory presentations), zinc peroxide as a delivery form has received less clinical attention than other zinc compounds or well-established acne actives.

Zinc peroxide formulations are generally used as directed on product packaging, often as a spot treatment or scalp rinse. If used in acne-prone or sensitive formulations, introduce slowly to assess tolerance. Avoid contact with eyes, and do not combine with other potentially irritating actives without professional guidance, particularly if you have compromised skin barrier function or active inflammation.

Zinc peroxide is generally considered safe for topical use at appropriate concentrations. However, avoid use on severely compromised or inflamed skin, as zinc accumulation may theoretically interfere with wound healing processes.