Written by Tenley Haraldson.
Reviewed by Cleaning Expert Sean Busch.

Don't throw out that shirt with embarrassing pit stains! Our guide to pit stains removal doesn't just walk you through erasing discoloration and odors: We also show you how to prevent them from happening in the first place!

How to Remove Pit Stains from Shirts in 4 Steps

remove yellow armpit stains

It doesn't matter if you're removing pit stains from colored shirts or white shirts, the following directions should get even the oldest marks out. 

Pro tip: Bleach can make pit stains look even yellower. Using Puracy Natural Stain Remover absolutely brightens white clothes without bleach!

1. Focus on the Dirtiest Places 

It's not just armpits you should check for: Don't forget to keep an eye on "problem areas" like collars and cuffs. 

2. Spray with Puracy Stain Remover 

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Fully saturate both sides of the stained area with Puracy Natural Stain Remover and wait at least 15 minutes before laundering. If you’re dealing with a stubborn stain, wait between 8-72 hours (the longer you wait, the better). 

Note: For silk, wool, or non-washable fabrics, don’t let this pit stain remover sit for more than one hour.

3. Agitate the Area

remove yellow armpit stains 

To remove tough pit stains, agitate the area with a boar’s hair detailing brush, laundry brush, or simply rub the fabric together. This drives the plant-based enzymes deeper into the fabric’s fibers while loosening stain particles. 

4. Launder

pit stains removal

Select a laundry cycle with the warmest water that fabric care instructions allow. We recommend choosing an "Extra Rinse" cycle. Extra-stubborn stains may require two treatments. Word to the wise: The plant-based enzymes in our Natural Laundry Detergent help break down sweat stains – and its low salt content means that the formula washes away cleanly and without residue. 

How Puracy's Pit Stain Remover Works

pit stain remover

Get the best tips from the cleaning obsessed.

Puracy crafts cleaning & care items that work really well. Our obsession with natural cleaning performance is our profession, and we're here to share it with you.

The 6 microscopic, plant-based enzymes in Puracy Natural Stain Remover get deep within  fabric fibers to obliterate pit stains, sweat, body odor, and any other stain-causing substance. No harsh detergents, no potentially harmful chemicals: just a 98.95% natural formula that works incredibly well. Guaranteed.

What Causes Yellow Pit Stains?

pit stains

Biology lesson! Eccrine sweat glands cover most of our body, and when our temps rise, they excrete a colorless and odorless fluid to help cool us down.

Apocrine sweat glands, however, are found around hair follicles (think: scalp, armpit, groin). When we're stressed or nervous, they produce a colorless and odorless fluid. And when that fluid mixes with the bacteria in our hair follicles and aluminum in antiperspirants, you get a stubborn yellow mixture that clings to fabrics.

Your Deodorant Might Be Responsible

what causes armpit stains

Deodorants don’t keep you from sweating, but they do mask/neutralize body odors caused by sweat. If you use deodorant and not antiperspirant, your shirts probably won't develop yellow armpits (although you might spot white residue and sweat stains).

Antiperspirants, on the other hand, contain aluminum compounds which help control odors and sweating by blocking your underarm sweat ducts and inhibiting the bacteria that feed on your sweat.

Since aluminum is the main culprit of armpit discoloration, choose an aluminum-free deodorant or learn how to stop pit stains before they happen.

Simple Tips on Stopping Armpit Stains 

how to stop pit stains

In addition to ditching the aluminum-based deodorant, there are plenty of easy ways to prevent discoloration in your shirts:

  • Wear a lightweight undershirt, sweat guards (also known as "pit stain protectors"), or dress shields to absorb sweat before it makes its way to your favorite garment. 
  • Maybe reconsider that second espresso: Since caffeine intake elevates body temperature and anxiety levels, it increases sweat production.
  • Before popping on your shirt, wait until your deodorant is totally dry.
  • After wearing machine-washable shirts, spray the armpits, collars, and cuffs with Puracy Natural Stain Remover. Throw them in the hamper and forget about 'em until laundry day. 

The Best Natural Stain Remover, Guaranteed 

This is more than the best sweat stain remover: It's the best stain remover – and our customer reviews back this statement up! In the unlikely event that you don’t absolutely love our Natural Stain Remover, we’ll refund your purchase. No questions or returns necessary.