About ARO
Underarm care, unapologetically different.
ARO is a skincare-first underarm spray powered by glycolic acid — made for people who'd rather treat the underarm like skin than cover it up.
Why ARO exists
The underarm got left out of skincare.
We spend years choosing cleansers, acids and moisturisers for our faces, then reach for whatever deodorant is nearest and never think about it again. The underarm is skin too — and it has been treated as a problem to mask rather than an area to care for.
ARO was created to rethink that. Rather than blocking sweat or covering odor with perfume, it approaches the underarm the way skincare approaches the face: work with the skin, and change the conditions instead of hiding the result.
That's the whole philosophy. Fewer ingredients doing more, no fragrance to hide behind, and a formula built around glycolic acid — an ingredient people already trust on their skin.
A little
pH 101
How an acid-based approach to underarm care actually works.
01
Sweat isn't the problem
Sweat itself isn't what creates odor. Odor develops when bacteria on the skin interact with sweat.
02
Glycolic acid helps lower skin pH
ARO uses glycolic acid as part of its skincare-first approach to underarm care.
03
Lower pH changes the environment
A more acidic skin environment makes it harder for odor-causing bacteria to thrive.
04
The result
Freshness without relying on fragrance to simply cover odor.
Why mask odor when you can change the conditions that cause it?
What's inside
Ingredients, and why they're there.
Powered by glycolic acid
Glycolic acid is central to ARO's skincare-first approach. It helps lower skin pH and gently exfoliates. See how it works →
Witch hazel extract
A botanical extract that supports a fresh, clean skin feel.
Panthenol — Vitamin B5
Helps condition and support comfortable-feeling skin.
Green tea extract
Antioxidant-rich botanical support for underarm skin.
Calendula
A soothing botanical long used in skincare.
Allantoin
Helps support soft, comfortable-feeling skin.
Vitamin E — Tocopheryl acetate
Antioxidant skincare support.
Vitamin C — Ascorbic acid
Antioxidant support within the formula.
Glycerin + Propanediol
Humectants that help skin hold onto moisture.
View full ingredient list
Aqua, Glycolic Acid, Hamamelis Virginiana (Witch Hazel) Extract, Sodium Hydroxide, Polysorbate 20, Panthenol, Propanediol, Eucalyptus Globulus Leaf Oil, Camellia Sinensis Leaf Extract, Glycerin, Calendula Officinalis Flower Extract, Allantoin, Tocopheryl Acetate, Ascorbic Acid, Potassium Sorbate, Iodopropynyl Butylcarbamate.
Getting started
How to use ARO
01
Spray
Spray 2–3 times onto clean, dry underarms.
02
Pat dry
Gently pat dry or remove excess.
03
Start slow
Begin 3–4 times per week.
04
Adjust
Increase or decrease frequency based on what works for your skin.
New to acid-based deodorant? Less is more at first. Acid-based underarm care can feel different from traditional deodorant, so give your routine a little time to settle in. If your skin feels sensitive, use ARO less frequently and give your skin a day off.
Patch test before use. Avoid broken or irritated skin. Do not use immediately after shaving. For external use only.
