Hypochlorous acid is slowly but surely becoming a standout ingredient in skin care, with a number of beauty brands investing in the ingredient and adding products centred around the bacteria-fighting acid to their offering.
The gentle molecule, produced by white blood cells naturally to help defend against bacteria and support the skin's healing process, is becoming a firm favourite among consumers looking to tackle skin concerns, with many turning to spray formats for easy top-ups throughout the day.
“It is commonly used to help reduce bacteria on the skin, calm visible redness, and support a healthy skin barrier without being harsh or drying,” says Michelle Ventresca, Aesthetician and founder of Live by Skin, a clinic in Massachusetts, US.
“I often recommend it to acne-prone clients because it can complement an acne treatment routine without adding irritation.”
Board-certified dermatologist Shamsa Kanwal, M.D. notes that “hypochlorous acid is not new”.
She adds: “It has been used in wound care and medical cleansing for years.
“Its recent popularity reflects improved stabilisation and packaging, alongside growing interest in simple, sensitive-skin-friendly products that can be used after exercise, travel, mask wearing or minor irritation.
“Social media has also turned this previously clinical-looking ingredient into an everyday skin care step.”
One of the appeals of the wonder ingredient is its versatility, as Ventresca explains: “Hypochlorous acid is one of the easiest products to incorporate because it layers well with nearly any routine.
“I typically recommend using it after cleansing and allowing it to dry for 60 seconds before applying serums and moisturiser.
“It can also be sprayed after workouts, on hot or sweaty days, after wearing a face mask, or anytime skin feels irritated and needs a quick refresh.”
Part of its popularity stems from growing consumer interest in the science behind skin care and barrier health.
“Consumers are becoming much mo
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