If you struggle with dry or sensitive skin, an acid is probably the last ingredient you would include in your skincare routine. Many exfoliating acids can be harsh on sensitive skin and even more reactions.
However, no hypochlorous acid.
This hero ingredient was originally used in the medical field for its powerful disinfectant properties, but has found its way into mainstream skin care products in recent years as manufacturers have discovered its ability to dramatically relieve a variety of skin conditions. These product experts say it can reduce the inflammation of eczema, psoriasis and rosacea, to name a few.
What exactly Is But what about hypochlorous acid? And how does it fit into your skincare routine? Here’s everything you need to know about this anti-inflammatory MVP, with insight from board-certified dermatologists.
Meet the experts: Pooja RambhiaMD, is a board-certified cosmetic dermatologist at UnionDerm in NYC. Robert FinneyMD, FAAD, is a board-certified dermatologist and founder of Soho Skin and Hair Restoration in NYC. Marisa Garshick, MD, FAAD, is a board-certified dermatologist at MDCS Dermatology: Medical Dermatology & Cosmetic Surgery in NYC.
What is hypochlorous acid?
Hypochlorous acid is a naturally occurring compound that is formed when chlorine dissolves in water. (Interesting, isn’t it?) It has powerful antimicrobial properties, meaning it can effectively neutralize bacteria, viruses, and fungi. In the body, hypochlorous acid is produced by white blood cells as part of the immune response to fight off infection.
When applied topically, hypochlorous acid helps maintain a clean and balanced environment on the skin, which can support both overall skin health and healing. For this reason, dermatologists recommend using hypochlorous acid to treat wounds after surgery. “Its gentle yet effective action makes it an indispensable tool for promoting skin health and treating various dermatological conditions,” says New York-based dermatologist Pooja RambhiaMD.
Speaking of which, it can be particularly beneficial for people with inflammatory skin conditions. “For conditions like acne or rosacea, where there may be more pro-inflammatory bacteria and other microbes, it can be helpful,” adds the New York-based dermatologist Robert FinneyMD.
Is it safe to use hypochlorous acid on the skin?
Yes! As Dr. Rambhia explains, “Hypochlorous acid is an effective yet mild antimicrobial agent that is well tolerated by most skin types, including sensitive skin.” It is extremely gentle and has a similar pH to human skin, which minimizes the risk of irritation. “It is commonly used for wound care, acne treatment, and as an effective disinfectant to prep skin before procedures,” she adds. However, as with any skin care product, it is always best to do a patch test before applying it to a large area in case you experience an adverse reaction.
Our most popular hypochlorous acid products
Hydrinity Hyacyn Active
Prequel Universal Skin Solution
SkinSmart Facial Cleanser
BrioTech Topical Skin Spray
Tower 28 SOS rescue spray
Benefits of using hypochlorous acid
Hypochlorous acid has many different benefits for the skin, from soothing irritation to speeding up wound healing. Read more below:
- It has antimicrobial properties: Helps cleanse the skin by reducing bacteria, viruses and fungi, which can prevent acne and other infections.
- It supports wound healing: Accelerates the healing process of minor cuts, scratches and other skin injuries.
- It reduces inflammation: Soothes irritated skin and reduces redness, therefore helpful for conditions such as eczema and rosacea.
- It balances the pH of the skin: Maintains the skin’s natural pH balance, which can improve overall skin health and resilience.
- It moisturizes the skin: Provides a mild moisturizing effect and helps to hydrate the skin without leaving it feeling greasy.
Are there any side effects when using hypochlorous acid?
Hypochlorous acid is well tolerated by most people and serious side effects are rare. However, mild irritation – especially with excessive use – is not uncommon. To minimize potential side effects, it is best to follow the product directions and use the product as directed. If unusual redness, itching, or discomfort occurs, be sure to discontinue use and consult a dermatologist if necessary.
“As with anything, too much of a good thing can be bad, and even hypochlorous acid can be irritating if you overdo it,” says Dr. Finney. “In theory, it kills microbes that some of them should be there, so you have to hope that the microbiome repopulates with healthy bacteria.”
Application of hypochlorous acid
“It can be used in a variety of ways and I often recommend it as an alternative to traditional toners, which can contain irritating fragrances, are expensive and lack active ingredients. After cleansing, I recommend patients use a hypochlorous acid spray instead of the ‘toning’ step. This helps eliminate microbes and has an anti-inflammatory effect. Once the solution dries, patients should apply a moisturizer,” says Dr. Rambhia. “Plus, it’s an excellent choice for use after a workout, especially if you’re not showering right away, as it helps reduce bacterial load and prevent breakouts.”
New York-based dermatologist Dr. Marisa Garshick says you can use hypochlorous acid as needed throughout the day, up to three times a day, “depending on the condition being treated.” If you’re using a liquid solution that doesn’t come in a spray bottle, Dr. Garshick recommends applying it by gently dabbing it onto the skin with a cotton pad.
Kaleigh Fasanella is a beauty and wellness writer with ten years’ experience in the digital media industry. As someone who has a rare genetic skin condition, skincare and promoting skin acceptance are particularly close to her heart. When she’s not typing furiously on her laptop, you can find her binge-watching British crime series, trying out TikTok recipes, and singing (badly) in the shower. If you like, you can follow her at @kaleighfaz.
Brian Underwood is Beauty Director at Women’s Health. He is an award-winning journalist with more than 15 years of experience covering beauty and lifestyle for several national media outlets and was previously Beauty and Wellness Director at Oprah Daily. His work has been published in Woman’s Day, Life & Style Weekly, Good Housekeeping and many others. He is also a member of the Skin Cancer Foundation Gala Committee and lives in New York City with his daughter.
