Switching from an antiperspirant to a natural deodorant usually takes a fortnight to settle. Your sweating returns to normal, which can feel like more than normal for a week or two, and the bacteria on your skin find a new balance, so some people notice a stronger smell for a few days. It passes. A rash does not count as part of it.
I switched when our daughter was tiny, which is the worst possible time to run an experiment on your armpits. Nobody told me what to expect, so I assumed every wobble meant the product was failing. Most of it was just my body catching up.
Here is the version I wish someone had given me.
What changes, and why
You stop blocking sweat, so the sweat comes back.
An antiperspirant uses aluminium salts to reduce how much sweat reaches the surface. Stop using it and your sweat glands go back to doing what they always did. For the first week or two that can feel like more than normal. It isn't more than normal. It's normal, after years of less.
At the same time the bacteria living on your skin, which were used to a dry, low-sweat environment, rebalance to the new one. That is the short window where the smell can seem stronger.
Whatever you've heard it called, it isn't a purge of anything. Your old deodorant wasn't poisoning you and nothing is leaving your body. It is an adjustment, and it settles.
Roughly how it goes
Days 1 to 3
Usually fine. The antiperspirant is still partly in effect and the new stick has an easy run. This is the week people post the glowing review.
Days 4 to 10
The honest bit. Sweat is back to full strength, your skin bacteria are reshuffling, and a formula that was coasting now has to work. If the deodorant is going to fail you, it fails here, and if your body is going to wobble, it wobbles here.
Days 10 to 14
Things level out. Most people stop noticing their underarms, which is the whole aim.
Hot weather, a hard workout or a hormonal shift can stretch any of those stages. Postpartum stretched mine.
What makes it easier
- Apply to clean, dry skin. Not over yesterday's layer. The actives need to touch skin, not old product.
- Two or three swipes, not six. More product doesn't mean more protection, it means more on your shirt.
- Reapply at lunch for the first week if you want to. It's a crutch, and that's fine. You'll forget to do it by week two.
- Wait a few hours after shaving. Freshly shaved skin reacts to anything you put on it.
- Start on an ordinary week. Not the one with the wedding, the job interview and the summer run.
- Keep the old one in the drawer if it helps. Then notice when you stop reaching for it.
The one thing that isn't part of the switch
A rash. Red, itchy, stinging in the shower, sometimes a darker patch that lingers. People are told this is their skin adjusting. It isn't. It is almost always baking soda, which sits at about pH 8 to 9 against skin that sits at about pH 5, and daily contact on thin underarm skin damages the barrier.
If that's happening, stop. Check the label for sodium bicarbonate. If it's in there, you have your answer, and the fix is a bicarb-free formula, not tougher skin.
bodi is bicarb-free in every scent, from day one, because we didn't want the gentle version to be a separate product you pay extra for. Magnesium hydroxide does the odour job without the pH spike. The full explanation is here.
How to tell the difference between "adjusting" and "failing"
By the end of week two, an adjustment has settled and a bad formula hasn't. If you're still catching yourself at 3pm, that's the stick, not your body. The usual culprits are a single odour active and essential oils dosed too low to last. Why your natural deodorant quits at 3pm goes through it.
Absolutely amazing so I bought the full size subscription package. I liked the different scents but couldn't believe that it lasted alllll day even running around in the heat after the baby and the dog.
Common questions
How long does the switch to natural deodorant take?
Give it a fortnight. Some people notice nothing at all, some have a wobbly week in the middle. If it's still not holding after two weeks, change the product rather than waiting longer.
Will I smell worse while I switch?
You might, briefly, around days four to ten, while your skin bacteria rebalance. A midday reapply covers it. It is not permanent and it is not a sign the product is failing yet.
Can I switch while pregnant or breastfeeding?
Plenty of people pick that moment to rethink what goes on their skin, and it's where bodi started. bodi is aluminium-free and bicarb-free with a 100% natural active base, and the full ingredient list is on every product page. We're not medical professionals, so if you have a specific concern, ask your midwife or doctor.
Do I need to do anything to my armpits first?
No. No scrubs, no masks, no clay. Wash, dry, apply. Anything that promises to speed the switch up is selling you a step you don't need.
Try the two weeks with the minis.
Three small ones, three scents, no bicarb. Enough to get through the wobble and find the one you keep reaching for.
Read next
Start with the honest guide to natural deodorant in NZ. Then: does natural deodorant actually work, and why natural deodorant gives you a rash.
