Golden Pits: Why White Shirts Turn Yellow, Plus How To Remove Pit Stains
Let us face it, most of us have been there. You pull out your favourite white shirt, and there it is, a yellow stain under the arm. It is frustrating, and it often sends a great shirt to the bin. Here is what causes those yellow armpit stains, and how to stop them for good.
The Cause, Aluminium and Sweat
The culprit is not sweat alone, it is the aluminium salts in traditional antiperspirants. Most antiperspirants contain aluminium chloride, which reacts with components in sweat to create yellow staining on fabric.
We have two main types of sweat glands. Eccrine glands are found all over the body, they produce a mostly water based sweat that evaporates quickly, and usually does not cause odour. Apocrine glands, concentrated in the underarms and groin, produce a thicker sweat that contains proteins and fats. When apocrine sweat proteins mix with aluminium salts from antiperspirants, a reaction occurs that discolours fabrics, especially white cotton.
The Solution, Switch to Natural Deodorant
To prevent yellow staining, go aluminium free. Natural deodorants such as Frank + Bare do not block sweat glands, and they do not use aluminium. Instead, our AHA powered formula supports a slightly acidic pH that keeps odour causing bacteria in check, without the aluminium and sweat reaction that leads to stains.
Explore Frank + Bare’s natural deodorant range, enjoy reliable odour control, and protect your favourite whites.
How To Remove Golden Pit Stains
If stains have already set in, try this simple method at home.
DIY Pit Stain Remover
- Mix ½ cup hydrogen peroxide with 5 teaspoons bi carb soda into a paste,
- Massage the paste into the stained underarm area until fully covered,
- Leave to sit for 30 minutes,
- Launder as usual, and air dry to check progress before using heat.
The combination helps break down proteins and lift the discolouration. Repeat if needed for older, set in stains.
Share Your Tips
Have another way to rescue white shirts from golden pits? Share your method in the comments, and help others save their favourites.
Frequently Asked Questions
What causes yellow armpit stains on white shirts?
Yellow stains form when aluminium salts from antiperspirants react with proteins in apocrine sweat, the reaction discolours fabric, especially white cotton.
Will switching to natural deodorant stop golden pits?
Yes, natural deodorants that are aluminium free do not create the aluminium and sweat reaction, which helps prevent yellow staining.
How do I remove existing yellow pit stains?
Make a paste with ½ cup hydrogen peroxide and 5 teaspoons bi carb soda, apply to stains for 30 minutes, then wash as usual. Air dry first to assess results.
Does sweat alone cause yellow stains?
Sweat alone is usually clear. The yellow colour typically appears when aluminium based antiperspirants react with sweat components such as proteins.
Will this method work on coloured fabrics?
Hydrogen peroxide can lighten colours. Patch test on a hidden area first, or consult a professional cleaner for delicate items.
