The yellow stain isn't sweat
It's a chemical reaction. And like any reaction, it needs an ingredient to start.
The same shirt. Your body didn't make the difference.
Sweat alone doesn't dye fabric. What dyes it is aluminium chlorohydrate from antiperspirants bonding with the proteins in your sweat and forming inside the fibre. Then dryer heat finishes the job, turning it into a hard, insoluble polymer. That's why it never washes out.
- Aluminium chlorohydrate dissolves into your sweat
- It bonds with sweat proteins, forming a yellow polymer inside the fibre
- Dryer heat bakes it in permanently
- The shirt is finished
Neutrant contains no aluminium chlorohydrate. The chain breaks at step one.
The white mark is a different problem
That one is simply product that never dried. Neutrant absorbs in about 15 seconds, so you can get dressed right away. The trick is how much you use: a pea-sized amount per underarm is enough. More product doesn't work better — it just takes longer to dry, and that is exactly what leaves white residue on a dark shirt.
Results vary with fabric, laundry habits, and what was used on the garment before.
Two different aluminums
Almost every natural brand says "aluminum-free." We don't, because it wouldn't be true. What is true turns out to be more interesting.
Aluminium chlorohydrate
Dissolves into sweat, enters the duct and forms a plug. It stops perspiration — which is a bodily function, not a defect.
Potassium alum
Sits on top of the skin. It doesn't enter the duct or block it. It neutralizes the bacteria that turn sweat into odor.
Yes, potassium alum contains aluminum — it's a mineral salt. We'd rather tell you than have you discover it reading someone else's label. The difference that matters isn't the element: it's the size of the molecule and where it goes.
Why it doesn't burn
The number one complaint about natural deodorant almost always has the same culprit.
The culprit is baking soda. It's alkaline and underarm skin isn't — especially freshly shaved. With daily use that pH mismatch turns into stinging, redness, and the burning sensation that makes people quit in the first week.
Neutrant has no baking soda. No alcohol and no propylene glycol either, which are the other two usual suspects.
That's why people who try it come back.
Try it for two and a half months.
That's how long one tube lasts. If your white shirt is still white at the end, now you know why.