If you have MCAS or high histamine issues, you’ve probably tried several deodorants just like me, and many of them were a irritating to your skin. The more reactive your body is, the more every ingredient or fragrance seems to matter. As our bodies are already loaded with toxins and struggling to detox, the safest choices tend to be simple, low-reactive formulas that let you sweat but keep odour under control, instead of shutting down your sweat glands.

Why Mineral Salt Sticks Are the most favourite

The 100% organic ones like mineral salt sticks, which is what I personally use and it does its job even when I exercise. These sticks work by leaving a thin layer of natural mineral salts on the skin that slows down odour-causing bacteria, without heavy fragrance or a big list of additives. I bought my mineral salt stick about a year ago and I still have most of it, so it lasts a very long time.

The downside is that these organic mineral sticks don’t block sweat and you have to reapply more layers. ​

What to Look For (and Avoid)

Because MCAS and histamine responses are so individual, there is no single “perfect” deodorant for everyone, but there are a few guiding rules;

• Look for: fragrance-free and hypoallergenic products with very short ingredient lists. fragrance as an ingredient can be made up of over 3,100 undisclosed ingredients, many of which are mast cell triggering. In communities.​
• Definitely avoid: classic antiperspirants with aluminium chlorohydrate or similar aluminium salts aimed at blocking sweating, because blocking a detox channel and loading more potential irritants into the skin is not ideal for a reactive system.​

​Popular Deodorants in MCAS and Histamine Communities

Biork Crystal Deodorant Stick

Biork is a potassium alum crystal stick that is 100% natural mineral salt, fragrance-free, hypoallergenic and free from aluminium chlorohydrate and similar aluminium chlorides. It is designed for sensitive skin and works by forming a light mineral film that inhibits odour-causing bacteria while still allowing normal sweating. ​

Find it:

• Biork crystal deodorant stick – EnergyBalance product page

Native Deodorant

Some people in the MCAS community report success with Native deodorant, particularly those without baking soda sensitivity. However, it’s important to note that Native has a reputation for causing rashes in some users, largely due to its baking soda content. If you’re sensitive to baking soda, Native has a sensitive version without baking soda that may work better.

LUME DEODORANT

Was mentioned frequently in MCAS threads, with some people reporting that it’s the only product they could tolerate for long periods. However, some users reported recent formula changes that may have added chemicals they want to avoid.

MooGoo Natural Deodorant – Sensitive

For those seeking an aluminium-free roll-on specifically formulated for sensitive and eczema-prone skin, MooGoo Natural Deodorant – Sensitive is 100% fragrance-free and uses magnesium hydroxide (milk of magnesia) instead of harsh chemicals or baking soda to prevent odour-causing bacteria. This makes it a good option if you’re reactive to both aluminium and baking soda.

DOVE ADVANCED CARE SENSITIVE ANTIPERSPIRANT

Unscented, alcohol-free and formulated for sensitive skin, giving strong odour and sweat protection with a simpler, skin-caring base. For those who want to avoid aluminium completely, some Dove ranges include aluminium-free deodorant sticks aimed at sensitive skin, so always check the exact variant and ingredient list before buying.