Your pits need an AHA moment
A clean stain-free serum deodorant with a unique blend of AHAs for the ultimate BO-fighting treatment. Bonus points: soothes skin, visibly brightens, and helps with ingrown hairs. No aluminum. No baking soda. Only pit-nourishing ingredients allowed.
- Shikimic Acid
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Natural deodorizer
- Mandelic Acid
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Helps address dullness and discoloration
- Lactic Acid
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Exfoliates and holds in moisture
- Pure Aloe Vera Juice
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Moisturizes + soothes
- Hyaluronic Acid
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Hydrates, softens + smoothes skin
- Highly Bioactive Peptide
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skin-conditioning + firming
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Use it everyday - just shake, roll, and go. Gently squeeze for more serum.
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Maximum benefits kick in after one week of use.
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Pair it with super hydrating Lipfuel, also made for the made-for-action Kosasport collection.
LipFuel Lip Balm Hyaluronic Acid Lip Balm
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TotalBeauty Awards (2022)
Into the Gloss Top 25 list (2022)
Into the Gloss Top 25 list (2021)
ELLE Future of Beauty Awards (2020)
Refinery29 Beauty Innovator Awards (2020)
Different Approach To BO
We want to treat BO where it starts. Our blend of AHAs (Alpha Hydroxy Acids) helps lower the pH in your pit so it’s harder for odor-causing bacteria to live there. Less bacteria = less smell.
Deodorant For Skincare Freaks
The AHA blend also brightens and exfoliates to help prevent uncomfy ingrown hairs. Additional skincare ingredients work to moisturize and soothe the sensitive skin of your pit too.
Clean Deodorant That Isn’t Annoying
The lightweight serum dries quickly and doesn’t leave a residue or stain on your clothes. The cooling roller ball is also super easy and feels sooo good going on your skin.
Kosas Clean
Vegan, cruelty-free, and gluten-free. Formulated without: aluminum, baking soda, mineral oil, talc, silicones, fragrance, parabens, sulfates, and phthalates.
Check out our Kosas Clean page for the full list.
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Frequently Asked Questions
You've got questions, we've got answers
What is Chemistry?
Chemistry is a clean, aluminum-free serum deodorant powered by a unique AHA (alpha hydroxy acid) blend that targets odor at the source. It helps neutralize odor-causing bacteria, visibly brightens the underarm area, and helps prevent ingrown hairs—all while keeping skin soft, calm, and smooth.
What does it do?
Instead of masking odor with fragrance, Chemistry treats body odor where it starts. The AHA blend works by creating a low-pH environment where odor-causing bacteria can’t thrive—leaving you fresh, clean, and confident all day long.
How does it act like skincare?
It’s skincare for your underarms. The gentle AHA blend not only fights odor but also brightens uneven tone and prevents ingrown hairs for visibly smoother, healthier-looking skin. Plus, it’s free from aluminum, baking soda, and synthetic fragrance, making it ideal for sensitive skin.
What makes Chemistry different from other clean deodorants?
Chemistry’s lightweight, serum texture is a total game-changer. It glides on easily with a cooling rollerball, dries down quickly, and never feels sticky or tacky. It won’t stain clothing or leave residue—just smooth, fresh skin that actually stays odor-free.
How do I apply?
Shake, roll, and go! Apply to clean, dry underarms using the rollerball applicator. Gently squeeze for more serum if needed. Let it absorb for a few seconds before dressing.
How long is the wear?
It provides 24-hour odor protection—from shower to shower—without clogging pores or interfering with your body’s natural processes.
Will chemistry help with dark underarms?
Yes! The AHA blend helps visibly brighten discoloration and even out skin tone over time by gently exfoliating and renewing the surface of the skin.
