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Backed by science.
Built around hypochlorous acid (HOCl), the same molecule your immune system makes to calm and protect skin.

One-step skin reset · Face + body
A gentle, pH-balanced hypochlorous acid spray for breakouts, redness, irritation, and every little “what now” moment. Simple enough for every day, strong enough that you’ll actually reach for it.
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Built around hypochlorous acid (HOCl), the same molecule your immune system makes to calm and protect skin.
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One fine-mist spray for breakouts, redness, shaving irritation, post-sweat refresh — face and body.
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pH-balanced, fragrance-free, and safe for sensitive skin. No alcohol, no stripping, no drama.
The formula
Hypochlorous acid (HOCl) is what your white blood cells make to calm, protect, and heal. We bottle it pH-balanced and fragrance-free — no alcohol, no stripping, no weird tingle. Just a fine mist that works with the skin you already have.
Active
Pure HOCl
Format
Fine-mist spray
Where
Face + body
Size
3.4 oz

What’s inside
No fragrance, no alcohol, no preservatives, no fillers. Just pure water, pharma-grade salt, and the hypochlorous acid your own immune system already makes.
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Ultra-pure H₂O
The base. Clean, filtered, and nothing else.
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NaCl · pharma-grade salt
Electrolyzed with water to produce HOCl — the same reaction your body already runs.
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HOCl · your skin’s defense
The active. Calms, protects, and resets reactive skin on contact.

A quiet minute
Three ingredients. One spray. The kind of skincare that asks for a second of your attention, and gives the rest of the day back.
How it works
No routine to rebuild. Spritz, let it settle, move on with your day. Use it first thing, post-shave, after the gym, over makeup — whenever skin needs a quick reset.
Step 01
Shake, mist, let it settle. No rubbing, no rinsing.
Step 02
HOCl calms visible redness and helps reset reactive, overheated, or freshly shaved skin on contact.
Step 03
Dries in seconds. Layers under — or over — anything else you're using.
Made for
Clo is made for the in-between — the post-gym flush, the freshly shaved neck, the bug bite you picked up on the trail. One gentle mist, many small reasons to reach for it.

On location
Post-swim. Pre-meeting. After the gym, before the flight. Clo slips into the small gaps of your day — pH-balanced, fragrance-free, and gentle enough to reach for whenever skin needs a reset.
A brand moment
Heat, salt, sweat, sun, sand. Clo resets skin without a routine, in the exact moments you’d rather not think about it.
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FAQ
Still not sure? Email hello@clotheory.com and we’ll answer in plain language.
Yes. Clo is pH-balanced, fragrance-free, and alcohol-free. It’s modeled on the hypochlorous acid your own immune system produces, so it works with sensitive, reactive skin instead of stripping it.
HOCl is widely used in eye care and wound care because it’s gentle and non-stinging. Clo is safe for the face (including around the eye area), all over the body, and for kids and pets. Avoid spraying directly into open eyes.
Three things: ultra-pure water, pharma-grade sodium chloride, and hypochlorous acid. No fragrance, no alcohol, no preservatives, no fillers.
Shake, mist, let it settle. No rubbing, no rinsing. Use it first thing in the morning, after shaving, post-workout, over makeup, or anytime skin needs a reset. It dries in seconds and layers under or over anything else in your routine.
Used 2–3 times a day, a 3.4 oz bottle typically lasts 6–8 weeks. For peak potency, use within six months of opening.
Keep it out of direct sunlight and away from high heat. A bathroom shelf, nightstand, or gym bag is fine. No refrigeration needed.
Toners are usually water plus actives to hydrate or exfoliate. Alcohol sprays kill bacteria but strip the skin. Clo is neither — it’s the same molecule your white blood cells make, delivered pH-balanced so it calms, protects, and supports healing without drying out your skin.
Yes. The 3.4 oz (100 ml) size is the maximum liquid volume allowed in a carry-on under TSA rules.