*THIS* Happens After Long Term Use of Antiperspirants

*THIS* Happens After Long Term Use of Antiperspirants


This week, Mary decodes: What happens after long term use of antiperspirants.


Armpits have been described by scientists as a “rainforest” of bacteria. Most of us grew up being told to use antiperspirant to combat the odor associated with this issue, but in the long run it may actually make you smell worse. Read on to learn the side effects of antiperspirants.


Antiperspirant Causes MORE Odor-Causing Bacteria

Antiperspirant is classified as an over-the-counter drug in both Canada and the U.S. because it uses aluminum chloride that blocks your sweat glands to prevent you from perspiring. Read more about aluminum here. Your body becomes reliant on antiperspirant. If you stop using it, you can experience major changes in the bacteria that grows under your arms, causing you to smell. There is a reason it is classified as an over-the-counter drug, your body becomes dependent on it.


antiperspirants makes me smell - underarm photo by alexa mazzarello



The “Rainforest” of Bacteria Under the Arms

In a study conducted at the NC Museum of Natural Sciences’ Genomics & Microbiology Lab, 18 subjects were recruited to compare what happens to bacteria under your armpits when you switch the type of underarm products you use. The subjects were divided into three groups: (1) people who used antiperspirant daily, (2) people who used deodorant daily and (3) those that did not use any underarm products. Every day of the study, both armpits were swabbed and the bacteria was analyzed.

After two days, the antiperspirant-users started to develop diverse bacteria under their arms. By the fifth day, there was significant growth of bacteria – in some cases, it was a pungent type of bacteria called Corynebacteria, the smelliest of all bacterial flora.


There are two main types of bacteria in your armpits:

Corynebacteria – The type that makes you smell

Staphlococcaceae –  The least smelly bacteria


What Happens To Your Body When You Stop Using Antiperspirant?

Ultimately, antiperspirant users experienced the most drastic change in bacterial communities when they stopped using any products. At the end of the study it was found that there was an initial increase of smelly bacteria in the underarms of antiperspirant users. Using antiperspirant reduces the amount of staphlococcaceae bacteria (the least smelly) that grows under the arms. This creates more opportunities for odor-causing species to develop.

Deodorant users did not experience the same increase in odor-causing bacteria when they stopped using underarm products. They even had fewer species of bacteria in their armpits compared to armpits of participants who use no product at all.


antperspirants on shelf - image by beauty.thefuntimesguide.com



It Won’t Last Forever

The study unveils that long term use of antiperspirant actually creates more bacteria on your armpits once you stop using them.

If you are an antiperspirant user making the switch to natural deodorant, it is important to know that this odor-causing bacteria won’t last forever, it is just a part of the detox that happens when you discontinue use.

I believe that our consumers should understand what is happening to their body during The Stages of Detox. It can be discouraging when it feels like natural deodorant isn’t working. Basically, your body becomes addicted to antiperspirant and it is harder for it to go without it. Thankfully, after several weeks, the culture of bacteria is able to rebalance and stop overproducing odor-causing bacteria.



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At kaia naturals, our charcoal detox deodorants are 99% natural, aluminum-free and cruelty-free. If you want to give ours a try, USE CODE: TAKESUMI for 15% off your first order.

(Offer valid for new customers only; limit one per customer. Can’t be combined with other offers.)


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Good Spend, Bad Spend: Bath Salts VS Bath Bombs

Good Spend, Bad Spend: Bath Salts VS Bath Bombs


This week, Mary decodes: Bath Bombs vs. Epsom Salt


There’s no better way to unwind and destress after a long week by taking a relaxing hot bath.

However, there are way more benefits of taking a hot bath than just for relaxing, in my opinion using products that can actually help your skin and your body matter more than a “tutti-frutti fizz.”

Personally, I would choose to use epsom salts over bath bombs any day! I know millennials, like the experience of a bath bomb but personally… I would rather spend on something a little more luxurious… which actually is less or the same price as a bath bomb.

Here’s why:


GOOD SPEND: Epsom salts

bath salts by pocahontas times


All epsom salts contain the naturally occurring minerals of magnesium and sulphates, which are critical nutrients our body needs to function. They are poorly absorbed through our food, therefore most people are deficient in these nutrients. Luckily, these minerals are easily absorbed through the skin, which is why it’s even more beneficial to soak in a pure epsom salt bath. It has been used for decades and ask any pharmacist they will tell you there is nothing like an epsom bath to make you feel better… in cold and flu season.

There are so many medicinal properties and benefits of soaking in epsom salts:

  • Helps boosts circulation throughout the body
  • lowers blood pressure
  • relieves muscle and joint pain
  • pull toxins from your pores
  • Helps to relax your mind
  • Helps relieve congestion during a cold or flu


BAD SPEND: bath bombs

bath bombs by soapqueen


Sure, bath bombs are definitely fun, watching it fizz and slowly explode in your water can be entertaining. However, if you actually want to get something out of your hot bath other than just ‘fun’, bath bombs are not the most beneficial.

Here’s why:

  • Bath bombs use inexpensive fillers such as baking soda and citric acid.
  • Most commercially made bath bombs use artificial colors and food dyes. A 2013 Slovenian study found that your skin can actually absorb these toxic dyes, particularly through recently shaven skin and the mucous membranes. From there, the dyes are absorbed directly into your bloodstream, instead of being broken down in the gut or detoxed through the liver.
  • Many bath bombs also use synthetic fragrance, talk about a bomb!
  • The one thing I really hate to see in bath bombs is GLITTER. Sure it makes your bath look so pretty and Instagram worthy, but don’t forget – they’re tiny pieces of plastic that won’t biodegrade once its down the drain. I can’t see tiny pieces of glitter being healthy for “certain body parts” as well!  



If the visual aspect of a bath bomb is THAT important to you, and you don’t care that you’re soaking in inexpensive ingredients but paying as much or more than Epsom salts… by all means… but colour, glitter and synthetic fragrance in a bath is not my idea of a good spend.

So, if medicinal and healing benefits are more important to you, spend your money on pure epsom salts.


At kaia naturals, our detox hot baths were inspired by the healing waters of a Japanese onsen. If you want to give ours a try, USE CODE: TAKESUMI for 15% off your first order.

(Offer valid for new customers only; limit one per customer. Can’t be combined with other offers.)


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Why Natural Deodorants Don’t Work

Why Natural Deodorants Don’t Work


This week, Mary decodes: Your underarms.


The first thing I often hear from consumers is that, “Natural deodorants DON’T work!” I am going to admit that I had tried for years to use natural deodorant without success, until I figured out why…


The Method

The truth is, we have probably thrown out a lot of deodorants that actually DO work. First, I will state that not all deodorants are created equally, so keep this in mind as human microbiome in the underarm area is very complicated. Therefore, finding success with natural deodorants just requires some knowledge.


Here are some key tips to helping you choose a natural deodorant that will work for you:

time clock by lucas blazek




If you are going to be making the change from antiperspirant to natural deodorant or just changing brands, BE PATIENT.

Your underarm microbiomes are about to go on a wild ride as studies show that the bacteria in your underarm will change when you stop using antiperspirant or deodorant (even using different brands of deodorant will recolonize the armpits with new bacteria).

U.S. medical journals show that similar to the gut or the mouth, the biology of armpit bacteria is just as complicated. This is why you need to allow at least 2 to 4 weeks to adjust to natural deodorant.


clothes rack by priscilla du perez




Antiperspirants block your sweat glands and prevent you from sweating, so when you stop using them, your body also needs to adjust to the feeling of moisture. Arrowroot and cornstarch, typically found in natural deodorants help with this.

However, if you sweat a great deal DO NOT WEAR TIGHT FITTING SYNTHETIC GARMENTS, you will feel like a wet mess for sure!

Wear loose fitting sleeves made of natural fibres like cotton, bamboo or linen so your underarms can breathe during the transition.

Think of it this way, when you change your skin care regime, you often will be told by an aesthetician that your skin may break-out.  Changing products under your arms will also cause some chaos. So preparing for this will definitely change the experience and possibly the outcome of your new product.


dropping essential oils in hands by christin hume




Unless you already know if you have an underarm sensitivity to an ingredient, the only way you will know is to use the product. Patch testing a deodorant on your hand or arm will not work as the skin under your arm is a different country. It is a damp and dark country and ingredients in a damp enclosed areas will respond differently than on surface skin.

If you know that your skin is highly sensitive watch out for these ingredients at high levels: 

Baking soda – if it is in the first or second line of ingredients, you could have a problem as approximately 20% of consumers do.

High levels of essential oils (in the first or second line of the ingredient list) as some companies use essential oils to deal with odor instead of proper active ingredients intended to combat odor.



At kaia naturals, we take pride in being transparent with our consumers. We want to ensure that you are aware there may be a 2 to 4 week transition period when switching from antiperspirant to natural deodorant.  Trust us, it’s worth it.



Week 1:  All is good, the product is working just fine.

Week 2:  This is when the trouble starts, as this is when the bacterial communities recolonize the armpits as a result of the change. This is the timeframe where most people throw the deodorant out because they have no idea what is happening under their arm and they assume the product is not working.

Yes, you will notice more sweating during this week. Don’t panic either, reapply your deodorant or you could try showering with an antibacterial soap in the morning before you apply your deodorant to help combat this symptom. We discovered this problem when we developed our deodorant, so we launched a natural antibacterial bar to help people who wanted to ensure that they were not uncomfortable during this part of the transition.

Week 3: Things will start to normalize (for most people). This week may have a little bit of ups and downs with the bacteria under the arm, but hang in as the end is in sight.

Week 4: You should almost feel normal by now, but you may have a day here and there that you worry. In a short period of time you will forget that you even used antiperspirant.



charcoal natural deodorant by kaia naturals


At kaia naturals, our charcoal detox deodorants are 99% natural, aluminum-free and cruelty-free. If you want to give ours a try, USE CODE: TAKESUMI for 15% off your first order.

(Offer valid for new customers only; limit one per customer. Can’t be combined with other offers.)


charcoal deodorant

nordic frost

charcoal deodorant

sakura blossom

discovery set

6 x charcoal deodorants

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