KosasChemistry AHA Serum Deodorant 70ml
Highlights
A clean, stain-free serum deodorant that features a unique AHA blend for the ultimate odor-fighting treatment. Bonus: Soothes skin, visibly brightens, and helps with ingrown hairs.
Available in Fragrance Free, Serene Clean and Beachy Clean.
Different approach to BO: We don’t just want to mask smell, we want to treat it where it starts. Our specific AHA blend helps create a pH environment where it’s harder for odor-causing bacteria to survive—leaving you feeling fresh, clean, and ready for anything.
Deodorant for skincare freaks: Our deodorant does more: The AHA blend keeps you from smelling, but it also visibly brightens the darker under arm area and helps with ingrown hairs. No aluminum. No baking soda. Only skin-nourishing ingredients allowed.
Clean deodorant that isn’t annoying: The thin, non-sticky serum dries quickly and doesn’t leave a residue or stain on your clothing. The cooling roller ball is so easy and it actually feels good going on your skin.
Directions
Shake, roll, apply liberally. Gently squeeze for more serum.
Precautions:
- Apply under arms only.
- Do not apply to broken skin.
- If irritation occurs, discontinue use.
Ingredients
AQUA, ALOE BARBADENSIS LEAF JUICE, GLYCERIN, MANDELIC ACID, SODIUM HYDROXIDE, SHIKIMIC ACID, LACTIC ACID, PALMITOYL TRIPEPTIDE-5, HYALURONIC ACID, CITRIC ACID, TARTARIC ACID, XANTHAN GUM, POTASSIUM SORBATE, SODIUM BENZOATE.
This list of ingredients may be subject to change, please consult the packaging of the product purchased.
+Offer
FREE Hotliner In Supreme 0.05g when you spend £40 on Kosas.*
Satiny, long-wearing color glides on smoothly and evenly without pressing or tugging.
*One free gift per order. Valid until the 15th of May or whilst stock lasts. Your free gift will automatically add to the shopping bag page. Total at order summary must be £40 or more worth of Kosas products, after any Promotion Code, Brands You Love discount and before delivery charges are applied. Cannot be used in conjunction with any other Promotion and this offer is not applicable to previously made or pending purchases
+Offer
UK EXCLUSIVE. FREE Boarding Now Beauty Bag worth over £125, when you spend £125 on anything.*
Curated, carry-on friendly and cute. You make the itinerary, we’ll pack the holiday beauty essentials.
*One free gift per order. Valid until the 30th of April or whilst stock lasts. Your free gift will automatically add to the shopping bag page. Total value at order summary must be £125 or more worth of products, after any Promotion Code, Brands You Love discount and before delivery charges are applied. Excludes Sephora Advent Calendar Gift Voucher and Fragrance Gift Box purchases. Cannot be used in conjunction with any other Promotion and this offer is not applicable to previously made or pending purchases. This offer is available online at Sephora.co.uk to UK Mainland customers only.
See more...
Rated 4 out of
5
by
Iona from
Positive Experience so far!
I have used this every day since I got it and I honestly think it has helped decrease my underarm sweat/odour. While it isn't an antiperspirant, I have struggled to find good deodorants/anti-perspirants to help with my sweat and this has given me a great experience. I also have sensitive underarm skin and this hasn't given me any rashes or pain. Quite pleased!
Date published: 2026-04-20
Rated 5 out of
5
by
NATALIE from
Great deo
Love this deodorant for the the gym. Received as part of a beauty edit and have repurchased as I loved it so much.
Date published: 2026-02-02
Rated 2 out of
5
by
Katherine from
Didn’t work for me
I really wanted to like this! I’ve been using aluminium free deodorant for 6 years now and have used a lot of different brands, Wild and salt of the earth are the ones that I’ve never had problems with and use daily. An hour after using the Kosas one, I was smelling. I persisted for a week and it didn’t get better, I smelled nicer with no deodorant at all! The serum texture and initial smell are really nice, I just wish it worked for me.
Date published: 2025-08-05
Rated 2 out of
5
by
Jessica from
Not the best!
This is a good deodorant but in small doses, unfortunately it’s burnt my skin!
Date published: 2025-08-04
Rated 5 out of
5
by
Victoria from
Pong free without bicarb or aluminium
This is my go to deodorant. It doesn’t contain aluminium or bicarbonate of soda. In a bid to move away from aluminium I found I reacted to natural deodorants that contained bicarbonate of soda. When I tried others that didn’t contain it my underarms would still smell even after showering . This product for me, with the glycolic acid, really works well to minimise the smell associated with sweating. I’ve not tried any of the scented versions as I don’t want to risk a reaction. The packaging can be frustrating as you get towards the end. Getting enough product out to roller the ball. I have found being gentle with the tube when rolling works best
Date published: 2025-05-13
Rated 5 out of
5
by
Azahara from
Best deodorant ever
This is the best deodorant I have ever tried! I have sensitive skin and sometimes I get eczema, due to this, my underarms are discoloured. After using this deodorant for a few months I can tell the dark marks in my underarms are fading. It is fragrance free so gentle for sensitive skin. Also, it completely removes any odour from my pits all day long.
Date published: 2025-04-24
Rated 5 out of
5
by
LIBBY from
Great!
I really like this! I have had no issues and it soothes my underarms!
Date published: 2025-02-28
Rated 5 out of
5
by
Jill from
The beat
This is the best deodorant like it’s so worth paying more for and it lasts ages
Date published: 2025-01-10
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