Hypochlorous acid (HOCl) is a weak acid but an amazingly potent bactericide, virucide, and fungicide. It has been used in hospitals for decades to decontaminate wounds and prevent infection. In recent years, it has made its way into dermatology and skin care, particularly due to its gentle, non-toxic, and non-irritating nature.

In contrast to other strong acids in skincare products, such as glycolic or salicylic acid, HOCl is gentle enough to be used close to the eyes and on delicate skin, making it ideal for individuals prone to irritation or redness.

One of the most hyped advantages of HOCl is its antimicrobial activity. It eliminates Cutibacterium acnes, the acne-causing bacteria, without the dryness or peeling associated with benzoyl peroxide or alcohol products. In a 2023 Journal of Clinical and Aesthetic Dermatology review, HOCl-infused sprays significantly decreased inflammation and redness of acne in patients in just a few weeks of use.

HOCl not only destroys bacteria but also calms the skin. It can reduce inflammation in contact dermatitis, eczema, and rosacea. A 2020 study found that even low-concentration HOCl treatments are effective and non-irritating on sensitive skin.

Since your body naturally uses hypochlorous acid to repair wounds, using it externally provides your skin with an additional push. It aids in tissue repair stimulation, promotes wound cleansing, and reduces the risks of infection. This is why it's often used following cosmetic treatments, such as microneedling, laser, or chemical peels.

Most acne and anti-ageing products are accompanied by the risk of side effects, such as dryness, stinging, or peeling. HOCl, by contrast, is pH balanced and extremely mild, even in babies or eczema sufferers. It has no alcohol, fragrance, or preservative, which makes it a holy grail for lover-of-miminalist-skincare fans.

In spray form, HOCl is simple to add to your regimen. Apply after washing, before moisturising, or as a mid-day pick-me-up. It's also commonly used to sanitise makeup brushes, gym equipment, or even small cuts and scrapes.

Are There Any Side Effects?

HOCl is generally well tolerated, even by people with ultra-sensitive skin. Just make sure you’re using a product formulated for cosmetic use, not industrial-grade or unregulated versions. Always check the ingredients label, and go for dermatologically tested brands.

Hypochlorous acid may lack the flash of a high-end serum or the buzz of trendy actives, but when it comes to skin-soothing benefits, it gets the job done quietly. Its soft, multi-tasking formula makes it ideal for anyone struggling with acne or sensitivity, or just wanting to maintain balanced, healthy skin. 

[ This article contains information is for informational purposes only. Hence, we advise you to consult your professional if you are dealing with any health issue to avoid complications.]