Sodium Hypochlorite

Sodium hypochlorite is a chemical compound commonly recognised as the active ingredient in household bleach. In skincare formulations, it functions as an oxidising and disinfecting agent, though its use in cosmetics remains relatively uncommon compared to other actives.The ingredient works by releasing hypochlorous acid, which has antimicrobial properties. Historically, it has been investigated for wound cleaning and infection control in clinical settings, where its ability to reduce bacterial load is established.

Sodium hypochlorite works through oxidation, a chemical process in which it releases hypochlorous acid. This acid penetrates microbial cell membranes and disrupts their cellular function, leading to inactivation of bacteria and other microorganisms.In wound care settings, this antimicrobial effect has been documented to support the removal of necrotic (dead) tissue and reduce infection risk, though research suggests its efficacy in promoting healing itself is limited or unproven.

If using a product containing sodium hypochlorite, follow the manufacturer's instructions carefully regarding concentration and frequency of use. Given its disinfectant nature and limited cosmetic evidence, products containing this ingredient are typically reserved for specific clinical applications such as wound cleansing rather than routine skincare. Always perform a patch test first, particularly if you have sensitive skin or existing skin barrier compromise.

Sodium hypochlorite can be irritating and caustic, particularly at higher concentrations. It is toxic if ingested and should never be used undiluted on skin. If you experience burning, redness, or persistent irritation, discontinue use and seek professional advice.