Hypochlorous acid (HOCl) is widely considered safe for use around the eyes when formulated specifically for eyelid and lash hygiene. At concentrations of 0.01% – 0.02%, HOCl mirrors a molecule your own immune system produces naturally, making it gentle enough for daily use. Products like the Bloome Hypochlorous Eyelid & Lash Solution are specifically designed for gentle eyelid and lash hygiene and are supported by clinical research on hypochlorous acid (HOCl).
The skin around the eyes is delicate and can be more sensitive to irritation, making a gentle eyelid and lash hygiene routine especially important. Bloome, a brand dedicated to eyelid and lash wellness, has built its flagship product around a molecule that has been studied and used in eye-care hygiene for years: hypochlorous acid.
You may have seen HOCl trending in skincare circles, but its roots in eye care run deep. Optometrists have used it to manage conditions like blepharitis and dry eye for over a decade, and the clinical literature on its safety and efficacy continues to grow. This post breaks down exactly what HOCl is, what the science says about using it around the eyes, and how Bloome's formulation delivers on the promise of gentle, effective eyelid care.
What Is Hypochlorous Acid?
Hypochlorous acid (HOCl) is a naturally occurring molecule that your own white blood cells produce. During what immunologists call the "oxidative burst," neutrophils release HOCl to kill pathogens and neutralise toxins when the body detects infection or injury. This biological origin is what separates HOCl from conventional antiseptics. It's not a foreign chemical applied to the skin; it's a molecule the body already recognises and rapidly metabolises. HOCl also has a completely different chemical structure from bleach, despite sharing a parent compound. HOCl is chemically distinct from household bleach and should not be confused with sodium hypochlorite solutions used for household cleaning. Eyelid-specific HOCl products are formulated at much lower concentrations and are intended specifically for the delicate eye area.
Is HOCl Safe to Use Around the Eyes?
HOCl can be suitable for use around the eyes when it is specifically formulated and labeled for eyelid and lash hygiene. Follow the product’s directions and avoid spraying directly into open eyes unless the product specifically states that it is intended for ocular use. General facial mists containing HOCl are made for the skin of the face, not for the delicate periocular area. The distinction matters. Products developed for eyelid hygiene, like the Bloome Hypochlorous Acid Eyelid and Lash Solution, are formulated with the unique requirements of the eye area in mind.
A prospective randomised study published in BMJ Open Ophthalmology (2023) found that HOCl hygiene solutions can be safely used in patients with blepharitis, reporting satisfying clinical outcomes. A separate randomised clinical trial published in the Journal of Clinical Medicine (2023) found that 0.01% HOCl delivered via ultrasonic atomization was both effective and safe in treating blepharitis after just two weeks of use.
Product formulation also plays a meaningful role in safety. pH, purity, and packaging all affect how an HOCl solution performs and whether it remains stable after opening. pH can affect the stability and activity of HOCl. Product formulation, packaging, and storage conditions should therefore be considered when choosing an HOCl product for eyelid and lash hygiene. an important reason to look closely at a product's formulation.
Important formulation considerations include:
- Purity: Long-term use calls for products free of bleach byproducts, fragrances, alcohol, sulfates, and parabens
- pH: Directly affects HOCl stability and efficacy
- Preservation: Once opened, unstabilized HOCl begins to degrade; packaging and preservation methods determine shelf life
- Intended use: Eye-area-specific formulations differ meaningfully from general cosmetic HOCl sprays
Can HOCl be used around the eyes?
HOCl products formulated specifically for eyelid and lash hygiene can be used around the eyes as directed. Apply according to the product instructions and avoid direct contact with open eyes unless the product is specifically labeled for ocular use.
Blepharitis
Blepharitis is a common inflammatory condition affecting the eyelids and can involve bacterial overgrowth and other contributing factors. Research cited in Review of Optometry (Stroman DW et al., Clin Ophthalmol., 2017) found that blepharitis patients harbour a bacterial load more than 14 times greater than controls. The same study showed that HOCl reduced the bacterial load by more than 90% without significantly altering the diversity of bacterial species. That last point matters: broad elimination of microbial diversity can disrupt the natural protective microbiome of the eye.
Dry Eye & MGD
Dry eye frequently intersects with eyelid inflammation. The meibomian glands—tiny oil glands lining the inner eyelid—can become blocked or infected when bacteria accumulate at the lid margin. By helping reduce bacterial burden around the eyelids, HOCl may support eyelid hygiene in people who also experience symptoms associated with blepharitis or dry eye. Dr Louis P. Bahoshy, OD, of Stoney Creek Eye Care, notes that HOCl "works by significantly reducing the amount of bacteria around the eyelids and eyelashes" and that the resulting reduction in inflammation improves dry eye symptoms.
Styes & General Lid Hygiene
Styes—infected oil glands on the eyelid—and general eyelid irritation also respond well to regular HOCl application. Used as part of a daily eyelid hygiene routine, HOCl can be used as part of a regular eyelid hygiene routine to help keep the eyelid area clean. At 0.02% concentration, HOCl has been described as safe for long-term daily use—not a periodic treatment, but an ongoing maintenance strategy.
Bloome Eyelid & Lash Solution
The Bloome Hypochlorous Eyelid & Lash Solution (.02%, 1.7 oz) is built around the principles that clinical research consistently identifies as important: appropriate concentration, a formulation free of unnecessary additives, and thoughtful packaging.
Bloome’s formula has a pH of 5.7 and uses metal-free packaging designed to support product stability. These formulation and packaging choices are intended to help maintain the solution during regular use.
The 0.02% HOCl concentration places Bloome within the range most commonly cited in clinical literature for long-term eyelid hygiene. The 0.02% HOCl concentration is formulated for eyelid and lash hygiene. Its gentle formulation is designed for regular use while supporting a clean, comfortable eyelid area.
For those with sensitive eyes—often the people who struggle most to find an eyelid hygiene product that doesn't sting, irritate, or leave uncomfortable residue—Bloome was designed with exactly those concerns in mind.
"As someone with sensitive eyes, finding the right eyelid and lash solution is crucial. Bloome has exceeded my expectations!"
⭐ Free shipping on orders $40+ • Use code BLOOM10 for 10% off
Bloome backs the product with a 30-day satisfaction guarantee. See the current guarantee terms on the product page for details.
Frequently Asked Questions
The Bottom Line on HOCl and Eye Safety
Research suggests that properly formulated hypochlorous acid products can be a gentle option for eyelid and lash hygiene when used as directed. From blepharitis management to general daily hygiene, HOCl offers what the eye area needs—broad antimicrobial activity, gentle tolerability, and compatibility with the delicate skin and tissues around the eye.
Bloome's Eyelid and Lash Solution brings that clinical science into a simple daily ritual. Whether you're managing a specific condition or simply want a cleaner, healthier lash line, choosing a product specifically formulated for eyelid and lash hygiene can be a practical addition to a gentle daily routine.
Explore the Bloome Hypochlorous Eyelid & Lash Solution and follow the product directions for use.
