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BO-Fighting AHA Serum
Free Shipping on US Orders $40+ & Free Returns
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
Aqua, Aloe Barbadensis Leaf Juice, Glycerin, Mandelic Acid, Polyglyceryl-4 Cocoate, Sodium Hydroxide, Shikimic Acid, Lactic Acid, Palmitoyl Tripeptide-5, Hyaluronic Acid, Citric Acid, Tartaric Acid, Xanthan Gum, Potassium Sorbate, Sodium Benzoate, Cananga Odorata Flower (Ylang Ylang) Oil, Citrus Aurantium Amara (Bitter Orange) Flower Oil, Citrus Paradisi Peel Oil, Simmondsia Chinensis Seed (Jojoba) Oil, Benzyl Benzoate, Limonene, Linalool
Size: 70 ml/ 2.4 fl oz
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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.
97% of consumers said the product made them feel fresh
94% of consumers said their body odor was neutralized
92% of consumers said the product lasted through workouts
*based on a consumer study of 33 women after 1 day of use
Clinically Tested. Allergy Tested.
Non-irritating. Safe for sensitive skin.
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)
Pairs Best With
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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Was this helpful?KCKosas Cosmetics3 weeks agoHi Stephanie! We're so sorry to read about your experience with Chemistry. We've reached out for more information!
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Was this helpful?KCKosas Cosmetics1 month agoHi Paige, we take your experience extremely seriously and have sent you an email to help.
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