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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)
Save with Sets

The Kosasport Hot Body Team Set
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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I used to bounce from Dove Clinical and Dove Spray and heard so much about all the bad chemicals.. switched to Native and other “natural” options but they all just masked the smell. Now THIS product was life changing. It actually treated my BO and now my sweat smells like Maple Syrup!!!!! like what?????!! so great 10/10 and it lasts so long !!
Was this helpful? - LLyndsayVerified BuyerAge Range 25 - 34Astrology Earth — Taurus; Virgo; CapricornHair Color BrownSkin Tone FairSkin Type NormalRecommend Yes -1000%3 months agoAge Range 25 - 34Astrology Earth — Taurus; Virgo; CapricornHair Color BrownSkin Tone FairSkin Type NormalRecommend Yes -1000%Rated 5 starsLiterally a life saver
Since having my daughter a year and a half ago, I’ve been dealing with excessive pit sweat and BO. I’m sensitive to so many deodorants, and the ones that didn’t cause a rash weren’t cutting it anymore. It was embarrassing and affecting my day to day life. Literally within DAYS of using this product i am not sweaty or stinky. Like, I’m in shock. I still use my old deodorant during the day for now, but honestly i think i could skip it. BRB buying 100 tubes.
Was this helpful? - EDEvie D.Verified BuyerAge Range 35 - 44Astrology Earth — Taurus; Virgo; CapricornSkin Type CombinationRecommend Yes -1000%51 minutes agoAge Range 35 - 44Astrology Earth — Taurus; Virgo; CapricornSkin Type CombinationRecommend Yes -1000%Rated 5 starsI AM CRYING.
I have been trying countless aluminum free deodorants for the past THREE years trying to find a formulation that would work for me. Charcoal detox, nope, baking soda, nope, even spent a lot of money on Lume products, nope! FINALLY! Kosas came through with a winner. It actually freaking works. I could kiss your formulation team. It slides on wet, but dries quickly. Some may complain about texture, but honestly who cares. This product works!
Was this helpful? - MWMs. W.Verified BuyerAge Range 45 - 54Astrology Earth — Taurus; Virgo; CapricornHair Color BrownSkin Tone MediumSkin Type NormalRecommend Yes -1000%2 hours agoAge Range 45 - 54Astrology Earth — Taurus; Virgo; CapricornHair Color BrownSkin Tone MediumSkin Type NormalRecommend Yes -1000%Rated 5 starsPerfect
I really appreciate a great deodorant without the bad stuff. And this one is perfect. I have tried dozens of in search of the one. And I can say I have found the right fit for me. I love it.
Was this helpful? - CBCarina B.Verified ReviewerAge Range 35 - 44Astrology Earth — Taurus; Virgo; CapricornHair Color BrownSkin Tone MediumSkin Type NormalRecommend Yes -1000%3 days agoAge Range 35 - 44Astrology Earth — Taurus; Virgo; CapricornHair Color BrownSkin Tone MediumSkin Type NormalRecommend Yes -1000%Rated 5 starsUnbelievable
Since having Covid my b.o has been unbearable. I don’t know what changed but I’ve literally tried every deodorant out there and none work. Until I bought this. I could actually cry because I had lost hope and figured I’d just be stinky forever. This deodorant is a godsend. I’ve been using a glycolic toner at night and this in the morning and there is ZERO smell. Nothing. Thank you!!
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