Is Baking Soda in Your Deodorant Causing a Rash

If you’ve recently made the switch to a natural deodorant or are thinking about it, you might’ve noticed one ingredient popping up again and again: baking soda.

At first glance, it seems harmless. After all, it’s just that same white powder you use in your kitchen. But when it comes to your skin, especially the delicate underarm area, baking soda might not be the gentle option it appears to be.

Let’s break down what’s really going on and why your skin might be craving something calmer.

What’s Baking Soda Doing in Deodorant, Anyway?

Baking soda (also known as sodium bicarbonate) is commonly used in natural deodorants because it helps neutralize odor. It works by raising the pH of your underarm area, making it harder for odor-causing bacteria to thrive.

Sounds effective, and it is. But that pH shift is also where the trouble starts.

The Not-So-Pretty Side of Baking Soda

Your skin, especially in sensitive areas like your underarms, has a natural pH level that keeps it balanced, healthy, and calm. Baking soda’s high alkalinity can disrupt this balance, which is why so many people experience:

• Redness and rash

• Burning or stinging sensations

• Dryness or flaking

• Itchiness that doesn’t seem to go away

If that sounds familiar, baking soda might be the culprit.

It’s Not You. It’s the Ingredient

We hear from women all the time who’ve tried to make the switch to “clean” deodorants, only to be met with angry, irritated skin. Many blame themselves, thinking their body just can’t handle natural products.

But here’s the thing: natural doesn’t always mean gentle, and baking soda isn’t right for every body.

Some people, especially those with sensitive skin, eczema, or who shave frequently, are more prone to irritation. Hormonal changes like postpartum or pregnancy can also make your skin more reactive.

So… What’s the Alternative?

You shouldn’t have to choose between effectiveness and comfort. At AporeNaturals, we formulate our deodorants without baking soda on purpose.

Instead, we use:

🌿 Magnesium – A skin-friendly mineral that neutralizes odor without disrupting your skin’s pH

🌿 Witch Hazel – A natural astringent that helps control sweat and soothes irritation

🌿 Chamomile & Meadowsweet Extracts – Anti-inflammatory powerhouses that calm and care for sensitive skin

These ingredients don’t just replace baking soda. They work with your body’s natural processes to keep you feeling fresh and confident, even in our hot, humid climate.

How to Tell If Baking Soda Is Irritating You

Not sure if your deodorant is to blame? Here’s what to watch for:

• Rash or discomfort a few hours to days after applying

• A burning or stinging feeling after shaving

• Persistent redness that doesn’t clear up with moisturizer

If you’re noticing any of these signs, your skin may be asking for a break.

Bottom Line: Listen to Your Skin

Your underarms are more sensitive than you think, and they deserve care that respects that. If baking soda-based deodorants have left you irritated, inflamed, or just frustrated, it’s not your fault. Your skin’s just telling you what it needs.

And that’s exactly why we made AporeNaturals. To offer a science-backed, plant-powered formula that keeps you fresh without the side effects.

Because natural should feel good. Not hurt.

💚 Want to give your skin the break it deserves?

Explore our baking soda-free formulas →