
The Science of Body Odor: What Actually Causes It — and How to Fix It for Good
Body odor isn't a hygiene problem. It's biology, bacteria, genetics, hormones, and a few things you eat. Once you see the whole picture, you can work with it.
Latest articles, research, and advice for maintaining healthy underarms.

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Body odor isn't a hygiene problem. It's biology, bacteria, genetics, hormones, and a few things you eat. Once you see the whole picture, you can work with it.

After years of using conventional deodorants, I made the switch to aluminum-free. Here's my honest take on Hey Humans and why it might be worth trying.

Learn when it's time to consult a specialized dermatologist for persistent armpit issues like excessive sweating, chronic rashes, or unexplained odor.

Discover if you qualify for telehealth treatment for excessive sweating. Take our eligibility quiz and explore prescription options from home.

We wore 30+ natural deodorants for 90 days — across gym sessions, sweaty commutes, and stressful Mondays. Here's what kept up, and what to actually look for.

Promised 48 hours. Failed by noon. Sound familiar? These are the formulas built for people who sweat for real — not for the back of a box.

If every deodorant turns your underarms red and itchy, you're not broken — you're reacting to baking soda, fragrance, or alcohol. Here are the formulas that don't.

The men's deodorant aisle is mostly marketing. We tested the formulas that actually hold up through workouts, suits, and 14-hour days.

From hormonal sweat to sensitive post-shave skin, women's deodorant needs shift. Here's what actually works — without the irritation or the marketing gloss.

When your sweat output triples and you shower twice a day, most deodorants fail by lunch. These are the formulas built for athletes — runners, lifters, cyclists, and CrossFitters.

Most of us grew up calling them the same thing. They're not — and once you know which one your body actually needs, your morning gets a lot easier.

Both have huge followings. Both promise all-day protection. We wore them side by side for 60 days. Here's the unfiltered verdict on which one to pick.

Clinical strength is sold over the counter. Prescription antiperspirants are stronger and require a doctor. Here's exactly when to upgrade — and how to do it online.

One reduces odor, the other reduces sweat. Picking the wrong one is why most people think their deodorant 'stopped working.' Here's how to choose.

Dark underarms have almost nothing to do with hygiene. Here's what's actually going on under there — and the treatments that do (and don't) work.

If you've ever changed shirts in your car, dodged a handshake, or planned an outfit around your sweat — you're not alone, and there are real treatments.

A new rash under your arm can be alarming — but most of them have very fixable causes. Here's how to tell which one you're dealing with.
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