You may have noticed that some people simply don't smell — no matter how much they sweat. It isn't better hygiene or discipline. It's genetics, and the science points to one specific gene.
The Gene That Decides
It's called ABCC11, and it controls one thing: whether your sweat contains the compounds skin bacteria can break down into odor. It comes in two versions, and the "odor-free" one is spread unevenly around the world. Among Europeans only about 2% carry it; in East Asia it's 80 to 95%. People with this version produce so few odor-forming compounds that they barely smell, even when they sweat normally.
The same gene gives something else away: your earwax type. The "odor-free" version comes with dry, flaky earwax; everyone else has the wet kind. It sounds random, but it's one and the same switch in your DNA.
Sweat Doesn't Smell — Bacteria Do
Here's the part that applies to everyone, not just the genetically lucky. Sweat itself is almost odorless — mostly water and minerals. The smell only appears when bacteria on the skin break down the compounds in apocrine sweat.
The main culprits are specific microbes — Staphylococcus hominis and Corynebacterium species — that carry enzymes turning odorless sweat into pungent molecules: thioalcohols that smell sharp and oniony, and volatile fatty acids that smell sour.
People with the "odor-free" gene variant simply don't produce enough raw material for these bacteria to work with. No raw material, no odor.
And that leads to the point that matters for the rest of us: odor isn't about sweat, it's about bacteria. That's the part that can be influenced.
What This Means for Everyone Else
If you're not in that 2%, you're not condemned to a daily battle. Your genes set whether your sweat contains odor precursors — but which bacteria dominate your skin, and in what balance, is far more changeable.
This is an active research area. Work led by microbiologist Dr. Chris Callewaert has shown that the underarm microbial community can shift, and that changing which bacteria dominate can change how a person smells. The distinction is the whole point:
- Genetics (the ABCC11 gene) — you can't change it.
- The microbiome (which bacteria live on your skin) — you can influence it.
Most people fall into the second category. Body odor there isn't written permanently in DNA; it reflects a bacterial balance.
How Antiperspirants Feed the Problem
Conventional antiperspirants don't just reduce sweat — they disrupt the whole bacterial ecosystem under your arms. When harsh formulas repeatedly clear the microbial community, the more resilient, odor-producing bacteria are often the ones that bounce back fastest. Research summarized by microbiome scientists suggests this can leave you more dependent on the very product that disrupted the balance.
The strong-smelling armpit and the daily antiperspirant can quietly feed each other.
Working With the Microbiome Instead
ZINDEO isn't a deodorant or an antiperspirant — it's an anti-odorant. It doesn't mask odor with fragrance and doesn't block your glands. Instead it works with the underarm microbiome, targeting the bacteria that create odor rather than the sweat itself.
In independent clinical testing, 90% of users showed improved microbiome diversity after 28 days. Sweat still happens — it's supposed to. What changes is the bacterial balance that decides whether that sweat turns into odor, with a clinically verified 72-hour effect.
Reset Set MAX is the starter routine: SALSOAP® preps the skin, while the roll-on and cream support the balance of your microbiome. The longer you use it, the better your skin holds that balance, so over time you apply it less often. When the cream runs out, you refill the jar.
In short: what "odor-free" people have by genetics, this approach works toward through targeted skin care — not by changing your genes, but by shifting the bacteria.
Reset Set MAX — SALSOAP® + roll-on + cream · €49.50. [Try Reset Set MAX →]
You Can't Change Your Genes, but You Can Change the Bacteria
Whether someone smells is largely genetic — and that part is fixed. What isn't fixed is the environment the bacteria on your skin live in. Odor doesn't come from sweat; it comes from what the bacteria do with it. That's exactly where you can step in.
Sources: American Society for Microbiology (asm.org); Science (science.org); Medical News Today; research on the underarm microbiome by Dr. Chris Callewaert. Educational content, not medical advice.
