An antiperspirant reduces sweat. A deodorant deals with the smell. That is the whole difference. Antiperspirants use aluminium salts to narrow the sweat ducts so less reaches your skin; deodorants leave your sweat alone and work on the bacteria that turn it into odour. "Aluminium-free" simply means the product is a deodorant, not an antiperspirant.
They sit next to each other at the supermarket, they come in the same shaped stick, and most people have used both without ever being told they're different products. Then someone tries a natural deodorant, still sweats, and decides it's broken.
It isn't broken. It was never going to do that.
The one-line version, expanded a bit
Antiperspirant: less wet. Deodorant: less smell.
Antiperspirant. The active is an aluminium salt. It forms a temporary plug in the sweat duct, so less sweat reaches the surface. Less sweat means less for bacteria to feed on, so it reduces odour as a side effect.
Deodorant. No aluminium, no plug. Sweat arrives as normal, and it's nearly odourless when it does. The smell comes later, when skin bacteria break sweat down into several different compounds. A deodorant's job is to deal with those bacteria and compounds, and ideally absorb a bit of the moisture so you feel drier.
What "aluminium-free" does and doesn't tell you
It tells you the product is a deodorant. That's it. It doesn't tell you whether the deodorant is any good, and it doesn't make the product "natural", "safe" or anything else on its own. Plenty of aluminium-free sticks are built on one active and fade by mid afternoon.
We won't tell you antiperspirant is dangerous, because we can't back that up and we'd rather you trusted the rest of what we say. People choose a deodorant for all sorts of reasons: they don't like the idea of blocking sweat, they've had the white marks on black shirts, they're pregnant and rethinking what goes on their skin, or they want to sweat like a person and just not smell. All fair. None of them need a scare story.
Which one do you actually want?
| If this is you | You want |
|---|---|
| Wetness is the problem. Damp shirts, visible patches. | An antiperspirant. No deodorant reduces sweat, ours included. |
| Smell is the problem. Sweat is fine. | A deodorant, built with more than one odour active. |
| Sweating heavily enough that it affects your day. | A pharmacist or your GP. That can be hyperhidrosis, and it's a clinical question, not a shopping one. |
| You want aluminium-free and you've been let down before. | A deodorant with no baking soda, a starch for moisture, and a brand that can explain each ingredient. |
Why the switch feels like it fails
Come off an antiperspirant and your sweat glands go back to full output, which can feel like more than normal for a week or two. The new deodorant gets blamed for sweat it was never going to stop. Give it a fortnight, judge it on smell, and you get a fair answer. What those two weeks are like.
Where bodi sits
bodi is a deodorant. We say so on every page, because the category is full of aluminium-free products quietly implying they'll keep you dry.
What it does: magnesium hydroxide, triethyl citrate and zinc ricinoleate work on odour from three directions. Tapioca starch absorbs some surface moisture, so you feel drier. There's no baking soda in any scent, so the usual cause of the rash is gone. The actives are included at clinically tested levels, and it's made in New Zealand.
What it doesn't do: stop you sweating. We'd rather lose the sale than promise that.
Common questions
Is deodorant or antiperspirant better?
Neither. They do different jobs. If wetness bothers you, antiperspirant. If smell is the issue and you'd rather not block sweat, a good deodorant.
Can you use deodorant and antiperspirant together?
You can, and some products already combine the two. A well-built deodorant usually covers the smell on its own; keep an antiperspirant for the days you need to be dry, if you want one.
Does aluminium-free deodorant work?
On odour, yes, if it has more than one active and something for moisture. It will not reduce sweat, because that's the aluminium's job and it isn't there. A longer answer is here.
Is natural deodorant the same as aluminium-free?
Not quite. Aluminium-free means no aluminium salts. "Natural" isn't regulated, so always ask what's natural: the whole product, or the active base? With bodi, the active base is 100% natural and some scents use safe, tested synthetic fragrance, and we say so.
A deodorant that admits it's a deodorant.
Three odour actives, no bicarb, six scents plus Unscented, one case you keep.
Read next
Start with the honest guide to natural deodorant in NZ. Then: does natural deodorant actually work, and why your natural deodorant quits at 3pm.
