The Staph & Cory Chronicles: Tales from the Underarm Underground

Why Some People Get Worse Body Odor with Zinc Deodorant (And What to Do)

Most people do great on zinc deodorant. A few find it works against them. Here's the microbiome reason why — and what to switch to if you're one of them.

Is Aluminum in Deodorant Actually Bad? An Engineered Answer

Straight answer, no fear-mongering: what the science actually says about aluminum in deodorant, and the real reason to consider going without it.

The Best Natural Deodorant for Heavy Sweating (An Honest Answer)

If you sweat a lot, you need the honest version: a natural deodorant won't stop sweat. Here's what it can do, and how to pick one that holds up under real heat.

Deodorant Without Baking Soda: Why It Matters for Sensitive Skin

Baking soda is the active in most natural deodorants — and the reason many of them irritate. Here's why baking-soda-free matters and how to replace it well.

Why Does My Deodorant Burn My Armpits?

If your deodorant burns, stings, or leaves a rash, there's usually one specific cause — and it's fixable. Here's why it happens and how to stop it.

What Lives in Your Armpit (And Why It Matters)

Your armpit is a thriving microbiome, and its residents would like a word. A guided tour of armpit bacteria — narrated by two of the locals.

How Zinc Stops Body Odor: A Deeper Look at BioShield™

Zinc doesn't mask odor or block sweat — it interferes with how bacteria create smell. A deeper look at the chemistry behind BioShield™ and how it works.

The Engineering Case for Aluminum-Free Deodorant

Not a fear pitch. The practical, engineering reason to go aluminum-free — and why removing aluminum means you have to actually solve odor, not block it.

The Science of Body Odor: Why Sweat Doesn't Stink (But Bacteria Do)

Sweat is nearly odorless. The smell comes from bacteria eating it. Here's the science of body odor — narrated, reluctantly, by the bacteria themselves.

How I Spent 8 Years Engineering a Natural Deodorant That Works

I didn't mix a deodorant — I engineered one. The story of 8 years, 68 formulations, and a clinical study, from the founder who couldn't find one that worked.

What "Clinically Tested" Actually Means on a Deodorant Label

"Clinically tested" is on a lot of labels and means very little on most of them. Here's how to read the claim — and what Zaffré's 57-subject RIPT study actually tested.

Why Natural Deodorants Stop Working Mid-Day

You applied this morning and by 2 PM it's gone. Here's the real reason most natural deodorants quit mid-day — and what an engineered formula does differently.

Switching to Natural Deodorant: What Actually Happens

No "detox" required. Here's what actually happens to your skin and odor when you switch to natural deodorant — and how to make the change without the rough week.

Deodorant Ingredient Glossary: What's Actually in a Natural Formula

Triethyl citrate, methylheptylglycerin, zinc, magnesium — what each ingredient actually does in a natural deodorant, in plain language. An ingredient glossary.

Can Your Deodorant Cause Dark Underarms?

Dark underarms have several causes — and your deodorant can be one of them. Here's what's actually behind underarm darkening and what to change.

Deodorant vs Antiperspirant: The Difference (And Why It Matters)

They sound interchangeable. They're not. Here's the real difference between deodorant and antiperspirant — and how to know which one you actually want.

Deodorant for Healthcare Workers: What Holds Up Through a Full Shift

Long shifts, constant motion, no time to reapply. Here's what actually makes a natural deodorant hold up for nurses and healthcare workers all day.

Why Your Deodorant Stops Working When You're Stressed

Stress sweat is a different kind of sweat — and it smells worse. Here's the science of why deodorant struggles under stress, narrated by the bacteria.

Tea Tree Oil for Body Odor: Does It Actually Work?

Tea tree oil has real antibacterial properties — but does it control body odor on its own? Here's what it does, what it doesn't, and how to use it well.

Magnesium vs Zinc Deodorant: What's the Difference?

Magnesium and zinc do different jobs in a deodorant. Here's what each one actually does, how they work together, and which formula fits your skin.

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