Why Your Armpits Need a Few Weeks to Settle In When You Switch to Natural Deodorant

Switching from a conventional sweat-blocking product to a natural deodorant is a big change for your skin. Give it a little patience — most people find their armpits settle into a new rhythm, though the exact timing varies from person to person.

Why Natural Deodorant Feels Different at First

When you first switch to a natural deodorant, your underarms may feel and smell different for a while. This isn't a sign that something's wrong. It's just your skin and its bacteria getting used to life without a conventional sweat-blocking product. Many people find this happens because using a conventional sweat-blocking product shifts the mix of bacteria living on the skin, and a natural deodorant lets that mix return to how it was before.

How Long Does It Usually Take?

We couldn't find research that pins down an exact number of days for this — it varies from person to person. From what people commonly report, it usually takes a couple of weeks, though for some it takes a little longer. Everyone's skin is different, so try not to compare your timeline to someone else's.

What's Actually Happening in Your Armpits

You might have heard the term "armpit detox", as if switching deodorant lets your body flush out toxins. Dermatologists say this isn't what's really happening. What you're noticing is your skin going back to its normal, product-free state, not toxins being purged from your body.

A short adjustment routine with some extra washing can help, but this is just ordinary skin care. It isn't pulling anything out of you.

What Conventional Sweat-Blocking Products Do to Sweat Ducts

Conventional sweat-blocking products contain ingredients like aluminium chlorohydrate or aluminium zirconium. These dissolve in your sweat and form a temporary gel plug inside the sweat duct. That plug physically blocks some sweat from reaching the surface of your skin. This is also how stronger, medical-strength aluminium treatments work for people with heavy sweating.

What a Natural Deodorant Does Instead

Our deodorants work differently. They use potassium alum, a naturally occurring mineral salt. Potassium alum molecules are too large to get through the skin barrier, so they stay on the surface. There, they help stop the growth of the bacteria that cause underarm odour. Our products are deodorants, not conventional sweat-blocking products: they help prevent body odour without blocking your pores or stopping you from sweating. Some health sources describe potassium alum as forming a film across the surface of the skin, rather than getting inside the sweat duct at all.

Does Natural Deodorant Have Aluminium? The Honest Answer

Yes, potassium alum is a type of aluminium salt. What matters is which aluminium ingredient is used, and how it behaves on your skin. Potassium alum stays on the surface of your skin and does not get inside the sweat duct. That's different to how aluminium chlorohydrate works in a conventional sweat-blocking product.

Potassium Alum vs Aluminium Chlorohydrate: What's the Real Difference?

Aluminium chlorohydrate is a small molecule. It's built to get inside your sweat ducts and form a plug there, which blocks some sweat from reaching the skin's surface. Potassium alum is a much larger molecule. It can't get through the skin barrier in the same way, so it stays on the surface. Instead of plugging sweat ducts, it works by helping stop the bacteria that cause odour from growing. That's the real difference: where the ingredient ends up, and what it does once it's there.

What to Expect Week by Week

Week One: A New Routine

In the first week, it's normal for your underarms to feel like they're doing more than usual. Sweat glands are getting back to normal function, and the bacteria on your skin are rebalancing. Wearing breathable fabrics and applying your deodorant a little more often can help while your skin gets used to the change.

Weeks Two to Three: Finding Your Rhythm

Many people find things settle within a few weeks, though this varies from person to person. If you notice a bit more sweat or odour than usual during this time, it doesn't mean your natural deodorant isn't working. It's a normal, temporary part of the adjustment.

Tips to Make the Switch Easier

Give Your Skin a Fresh Start

A gentle daily wash with mild soap and water is enough to support your skin through the switch. You don't need special detox products. Any changes you notice are your skin returning to normal, not toxins leaving your body.

Pick a Format That Suits You

We've been making natural deodorants since the 1990s, starting with our original crystal deodorant in 1993. Take a look at our natural deodorant range to find a format that fits your routine, including our Crystal Deodorant.

Try Unscented if Your Skin Feels Sensitive

If your skin feels a bit sensitive during the switch, the Unscented option uses the same base formula but without fragrance ingredients, which are the most common source of skin sensitivity in cosmetic products. Whenever you try a new product, it's a good idea to do a patch test first. Put a small amount on the inside of your wrist or elbow and wait 24 hours before using it fully.

Frequently Asked Questions

Does natural deodorant contain aluminium? Our deodorants use potassium alum, which is a type of aluminium salt. It works differently to the aluminium chlorohydrate found in conventional sweat-blocking products: it stays on the surface of your skin rather than getting inside the sweat duct.

Why do I notice more odour when I first switch to natural deodorant? Switching changes the bacteria living on your skin, and using a conventional sweat-blocking product itself alters this bacterial mix compared with using a deodorant or no product at all. What you're noticing is your skin returning to its normal state, not toxins being released.

How long does the natural deodorant adjustment period last? We couldn't find research that confirms an exact figure for this — it varies from person to person. Many people find it commonly takes a couple of weeks, though it can take a little longer for some. Everyone's skin is different.

Can I go back to a conventional sweat-blocking product after switching to natural deodorant? Yes, it's entirely your choice. Conventional sweat-blocking products work by plugging sweat ducts with a temporary gel, and this changes the mix of bacteria living on your skin. Your skin and its bacteria respond to whichever product you use.