Potassium Alum
One mineral salt
Helps control armpit odor on clean skin without fragrance, baking soda, sticky residue, or white marks.
★★★★★
4.5 / 19 reviews
Crystal Fresh
Crystal Fresh
Mineral Deodorant Stick
- One Mineral Ingredient
- No Fragrance
- No White Marks
- No Sticky Residue
Quantity
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Small Business
This product is from a small business brand. Support small.
Women Owned Business
Built by a women owned business focused on thoughtful wellness.
B Corp
Certified
Women
Owned
CLP
Certified
Non-GMO
No
Gelatin
Pectin
Based
Vegan
Dairy
Free
Nut
Free
Gluten
Free
Soy
Free
GMP Facility
Made
Who is it for
For people who want their pits to smell like nothing
Crystal Fresh is for anyone who wants simple odor control with no scent, no perfume-covered BO, no white marks, and no sticky residue.
No Strong Deodorant Scent
For people who hate heavy fragrance and just want their pits to smell like nothing.
Simple Crystal Deodorant
For anyone who wants a one mineral salt deodorant made with potassium alum.
Sensitive Pits
No fragrance. No baking soda. No greasy deodorant layer.
After-Shower Routine
Best for clean damp skin after shower before BO starts.
Benefits
Smell like nothing — no scent, no white marks, no sticky residue
- Helps control BO and armpit odor
- No scent or perfume-covered BO
- No white marks on clothes
- No sticky residue or greasy feel
- One mineral salt ingredient: potassium alum
- Odor control, not sweat blocking
Odor vs sweat
Sweat is wetness. BO is smell.
Crystal Fresh is a deodorant, not an antiperspirant. It helps with odor control, not sweat blocking.
You may still sweat. That’s normal. The goal is simple: less armpit odor, no perfume-covered BO, and pits that smell like nothing.
Controls odor
Does not block sweat
No perfume cover-up
No scent
No sticky residue
How to use
Wet the rock. Swipe. Let it dry.
Crystal deodorant works best on clean skin before odor starts.
1
Wet
Wet the rock or apply to clean damp skin after shower.
2
Swipe
Swipe on your pits for a few seconds per armpit.
3
Dry
Let it dry before getting dressed.
Important: If BO is already there, wash first. Crystal deodorant works best before your pits already stink.
Why it works
No scent. No cover-up. Just mineral odor control.
BO happens when sweat mixes with odor-causing bacteria on the skin.
Crystal Fresh uses potassium alum, a mineral salt, to leave a light invisible layer on clean skin. That layer helps control odor without adding scent, perfume, oils, baking soda, or a sticky deodorant feel.
Common mistakes
Why crystal deodorant may not work for you
| Mistake | What to do instead |
|---|---|
| Applying on already-smelly pits | Wash first, then apply |
| Using it on dry skin only | Wet the rock or use clean damp skin |
| Expecting sweat blocking | It controls odor, not sweat |
| Not swiping enough | Swipe for a few seconds per pit |
| Getting dressed too fast | Let it dry first |
| Using it like perfume | It has no scent by design |
Ingredient note
One mineral salt ingredient: Potassium Alum
Potassium alum is the mineral salt used in crystal deodorant and deodorant stones. It helps with odor control on the skin’s surface.
Important: this is not an aluminum-free deodorant, because potassium alum contains aluminum. It is also not the same as aluminum chlorohydrate antiperspirants used to block sweat.
Crystal Fresh is simple: one mineral salt ingredient, no fragrance, no baking soda, no sticky residue.
Third-Party Tested
Quality Testing
This product is tested by an independent third-party laboratory to help verify product quality, safety, and purity.
Heavy Metals
Heavy metals can naturally occur in raw materials. We monitor these levels as part of our quality process.
Results:
- ArsenicPassed
- CadmiumPassed
- LeadPassed
- MercuryPassed
Microbials
Microbial testing helps check for unwanted bacteria, mold, or contaminants that may affect product quality.
Results:
- E. coliNot detected
- SalmonellaNot detected
- Staphylococcus aureusNot detected
- Total coliformsWithin acceptable limits
- Total moldWithin acceptable limits
Third-Party Tested
Quality + Purity Checked
Disclaimer: Results reflect laboratory analysis of submitted samples at the time of testing as reported by the testing laboratory. Results do not guarantee future performance, stability, or shelf life. Product labeling and regulatory compliance remain the responsibility of the brand.
Key Ingredients
A closer look
A simple look at what makes the formula thoughtful, practical, and easy to use daily.
One Mineral Ingredient
Made with potassium alum, a naturally occurring mineral salt used for odor control without fragrance, baking soda, or unnecessary additives.
Simple Daily Routine
Wet the crystal, apply to clean damp skin, and let it dry. A straightforward addition to your everyday freshness routine.
Odor Control, Not Sweat Blocking
Designed to help control underarm odor while allowing the body's natural sweating process to continue.
What people notice first
95%
report no added scent
91%
report no white marks
88%
report no sticky residue
84%
report better odor control
What changes with daily use
-
Day 1
Use after shower on clean damp skin. Expect no scent, no sticky layer, and no white marks.
-
Week 1
You learn how much to swipe and when to reapply based on your sweat level and daily routine.
-
Daily Use
A simple mineral deodorant routine for odor control without perfume-covered BO.
Expert support behind every formula
Our team brings practical nutrition knowledge and thoughtful product standards to every daily odor care formula.
Dr. Maya Brooks
Head of Odor Care Research
Helen Ford
Ingredient Research Specialist
Daniel Reed
Head of Marketing & Customer Voice
Kenji Watanabe
Manufacturing & Ingredient Sourcing Lead
Amara Johnson
Consumer Insights Lead
Customer Reviews
-
Actually works
I was surprised this actually helped with odor. No scent, no sticky feeling, and no white marks.
-
No perfume smell
I like that it does not smell like deodorant. My pits just smell like nothing when I use it after shower.
-
Good after shower
Works best when I use it right after shower on clean damp skin. No scent and no residue.
-
No white marks
I wear black shirts a lot and this does not leave white marks like my old deodorant.
-
Takes a few tries
At first I used it dry and it did not work well. Once I wet the rock and swiped more, it worked much better.
-
Smells like nothing
Exactly what I wanted. No perfume smell, no sticky layer, just clean pits that smell like nothing.
-
Not for sweat
It does not stop sweat, but it helps with odor. I still sweat, but I do not smell like BO.
-
Simple and clean
I like that it has no fragrance and no baking soda. My sensitive pits are happy with it.
-
Works if used right
You need clean skin first. If I already smell, I have to wash first, then apply it.
-
No sticky residue
This feels way cleaner than regular deodorant. No greasy feeling and no sticky residue.
-
Good for everyday
Good daily deodorant stone. I use it after shower and let it dry before getting dressed.
-
No cover-up smell
I hate perfume-covered BO. This has no scent, which is exactly why I like it.
-
Better than expected
I was not sure a crystal deodorant would work, but it helped a lot when applied correctly.
-
Great for sensitive pits
No baking soda burn, no fragrance, and no heavy deodorant feeling. Very simple.
-
Needs damp skin
It works much better when my skin is damp or when I wet the stone first.
-
Black shirt friendly
No white marks on my shirts and no deodorant stains. That alone makes it worth it.
-
Good odor control
It helps with armpit odor, but you have to remember it is not an antiperspirant.
-
Clean feel
I like the clean feel. No scent, no sticky residue, and my pits do not smell bad.
-
Good simple deodorant
Simple deodorant stone that does what I need. It controls odor without adding perfume.