The Science Behind Fussy - Fussy

The Science Behind Fussy

Natural deodorants tend to get a bad rep - and that’s because there are loads of out there that simply don't work very wellSo when you do finally find a natural deodorant that actually works, it might seem like magic. 

While we think that Fussy is pretty magical, we’re here to pull back the curtain on the science behind Fussy deodorant. Which is kind of like magic, right?

The science behind B.O.

We’ve all suffered from B.O. at some point in our lives, but don’t worry, there’s no shame here. Body odour is totally natural and you know what? It’s not even your fault. It’s the bacteria in your armpits feeding on all your lovely sweat molecules. 

Truth bomb number 1: your sweat doesn’t smell, your bacteria does. 

The armpit microbiome is a delicate ecosystem of good and bad bacteria. They balance each other out like a musical superstar duo. Unfortunately, we’re living in an age of extreme cleanliness - especially post-COVID-19. Daily showering and excessive use of soap are wiping out your good bacteria and letting the smelly ones take over.

There are other things to take into account too. Genetics, how much your glands secrete, diet, medications. We’re all so different and some of us are a little more smelly than others. And that’s ok.

Bacteria is a good thing

When we started the Fussy journey, we knew that we weren’t going to compromise on anything. From the packaging to the ingredients, we were going to be fussy about everything. So when it came to the Fussy formula, we were going to need a bigger brain. Enter Dr. Sweat. Or that’s what we like to call her.

Truth bomb number 2: to stop bad bacteria you need to add more bacteria.

Sounds counterintuitive. But when you understand the science behind it, it all makes sense. If your daily washing is wiping out all the good bacteria, it leaves more space for the smelly bacteria to colonize, which means more B.O. 

So, by adding more of the good guys, you’re effectively rebalancing your armpit’s microbiome and reducing body odour.

Backed by science not buzzwords

Although the probiotic industry is booming, probiotic deodorants aren’t as well known as kombucha or sauerkraut. That’s because there haven’t been any good ones. Until Fussy.

We are so confident in our formula that we decided to let a scientist put it to the test. We sent our Fussy deodorant to microbiologist, Dr. Annie. With a PhD in biochemistry, Dr. Annie tests all kinds of products for their ability to remove bacteria and provides fully transparent results. You can read all about the experiment here. 

In terms of the experiment, Fussy came out on top with an obvious reduction in bacteria compared to a bare armpit. But the best part is that Dr. Annie loves it!

I never had BO when wearing the fussy, even when I went longer than 24 hours. I really loved it!” - Dr. Annie

Finally, we asked Dr. Annie to pit us against the leading natural deodorant brand here in the UK. Pit to Pit! Yeah, we’re that confident. And, well, we’ll let the results speak for themselves.

Fussy's magic ingredient

For over 18 months we worked tirelessly with Dr. Sweat to create a formula that actually works - and is good for pits and planet!

You can find out more about our ingredients here, but the star of the show is a little microbe that you’re probably already familiar with: Lactobacillus. Yep, the one from yoghurt and milk. But this little guy is a friend to your pits too.

Lactobacillus is a probiotic that works by gradually inhibiting the growth of odour-causing bacteria. So every time you use your Fussy, you’ll be replacing any of the good guys that have been washed away. Refreshing your army of good bacteria to fight off the bad ones.

A natural deodorant that actually works

Fussy is one of the most effective natural deodorants because it’s backed by science. It’s that simple. You’ve seen the Petri dishes, now all that’s left to do is pick your scent and case and you’re ready to go.

But we know that every body - and armpit - is different, so what works for your friend, might not work for you. We’re obviously going to recommend Fussy, but it’s personal. So if you want to keep looking, no sweat.

To smell good and do good, order Fussy here.


  • Stephanie Gibson

    I am cometary sold on this product, it took my body a good few weeks to adjust to it, but it carried on getting better, I wouldn’t use anything else now.i even find that the microbes get to work overnight and what might have been dodgy armpits at bedtime are fine by morning! This works better than a conventional anti perspiration.

  • Ally

    Just read the science section. Are you telling me that if I washed less I wouldn’t get B.O?! By the way Fussy works even better than I had imagined – mid-life hot flushes and all!

  • Jackie Parr

    Do they have preservitives in ,can you buy scent free and are they hypoalergenic

  • Sarah Seabright

    Dear Fussy,
    I am highly intolerant (allergy) of every deodorant I’ve ever used. Also I usually steer away from anything containing shea butter and coconut because I find the smell nauseating.
    Do your deodorants smell of shea butter?
    Can you supply a trial sample as I don’t want to spend money on a one off purchase that I can’t use?
    I hope you can help. I care for people in the community so I have to take great care with my personal hygiene.

  • Lisa

    I recently been to Tenerife doing loads of walking in the hot sticky weather and I must say was really impressed with fussy also it can go in my hand luggage so perfect for holidays

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