Alum Stone Crystal Deodorant & Aftershave


The crystal deodorant our customers are raving about! Made of mineral salt, the alum stone stops odor-producing bacteria from forming, making it a safe, simple and effective natural deodorant. With daily use, it will last you about five years.

The stone can also be used as an aftershave or a facial toner because of its natural toning and astringent properties. It's great for your skin and can even stop bleeding from minor cuts. Try using it to tighten and tone, soften fine lines, brighten dark spots or ward off acne - It's the ultimate minimalist skincare item!

Each stone with an organic cotton travel pouch to protect it and keep it dry when on-the-go. If you already have an alums stone, you can purchase an individual travel pouch here.

Safe for sensitive skin. Goes on clear.

Use & Care

Gently wet the surface of your crystal deodorant and apply as you would deodorant.

The alum stone works best when your pores are clean and open, such as after a shower. You can also use a warm or soapy washcloth to cleanse your underarm, and then apply the crystal deodorant. Either works just fine! Cleansing your underarm first is the trick to what makes this so effective. 

You can read more about how to use alum stones on our blog. 

Like any natural deodorant, there can be a bit of an adjustment period as your body gets used to the alum stone. We suggest giving the detox phase a few weeks for it to work its best. We share our favorite tips for transitioning to natural deodorant (and our detoxifying 'pit mask' recipe!) on our blog.  

When used as an aftershave on the legs or face, it soothes nicks and cuts and helps prevent razor burn or skin irritation from shaving. 

Use the travel pouch to store your alum stone when not in use or while traveling.

Please note: It is a salt crystal that dissolves with moisture, so pat dry if needed and store in a dry place. We recommend using a soap dish or old jar lid as a tray for your alum stone, to protect your surfaces and countertops.

The crystal deodorant does not expire, nor is it temperature sensitive. With daily use, this stone can last for 3-5 years.

Warning: Discontinue use if irritation occurs and consult your doctor. Consult your doctor if you are pregnant or breast feeding.


Classic Crystal Deodorant - Each alum stone is a unique mineral crystal with slight variations in shape and appearance. 


Potassium Alum (Mineral Salts).

Alum stones contain a naturally occurring form of aluminum (Potassium Alum) that does not possess the same health risks as the aluminums in many antiperspirant deodorants (Aluminum Chloride/Chlorohydrate/Zirconium), which block sweat ducts and glands. Potassium Alum is a different chemical compound and stays on the surface of your skin, making crystal deodorant safe to use.

Does not contain Parabens.

Size / Materials 

Alum stone weighs 150grams/5.3 oz.


Each alum stone comes with a compostable/recyclable paper tube printed with soy ink and an organic cotton draw string travel pouch.


Made in France.


End of life

Each alum stone crystal deodorant will last up to 5 years. Once it becomes a small stone you can sand it down to a powder (it’s a very soft crystal), add water, put it in a spray bottle and use the rest as a liquid spray crystal deodorant - very zero waste!

Organic cotton drawstring bag can be textile recycled or repurposed.

Customer Reviews

Based on 43 reviews
Bennett (Lee, MA, US)

I’ve been using this in combination with magnesium oil spray and I’m yet to notice armpit odor. Excellent!

A.B. (Seattle, WA, US)
Best ever

I have used EVERY natural deodorant on the market and somehow this salty rock is #1. The packaging is gorgeous, the product is gorgeous (crystal, duh), and I literally NEVER have issues with needing to reapply throughout the day. I’m the morning, one and done. This product defo boosts my confidence.

M. (Columbus, OH, US)
Great on shower day

I have tried many natural deodorants in the last 14+ years of natural living. I was curious about this one as it can also be used for skin care in the event it didn’t work well as a deodorant. This deodorant works quite well straight out of the shower. I’m a busy mama who doesn’t have the luxury of daily showers, so I’ve had the occasion to use it on a non-shower day. Even though I washed with soap prior to use, it still failed to keep me stink-free. I do love how it never causes skin irritation, even when used directly after shaving.

Cole Ivie (Palm Desert, CA, US)
Works like magic

Absolutely awesome. The alum stone works like magic and worked for me right after my first application. Definitely get this.

Aly (New York, NY, US)

I like that it is sustainable, durable and that it really works on me. Would be cool to have something like that in travel size. =)