Yellow Stains on White Shirts

Try this, it works:

1:1:1 – One part baking soda, one part hydrogen peroxide, one part water. Make a solution of the three ingredients. You will need about 1/4 cup each of baking soda, hydrogen peroxide and water to treat one shirt. Protect the countertop with a thick white towel, rub 1:1:1 solution into stains and allow to work for at least 30 minutes. Use an old soft toothbrush or bristle brush to loosen any residue and then wash as usual in warm or cold water.

I have nothing for prevention. Sorry.

But I can get the stains out. Use a Fels Naptha laundry bar. They're 88 cents in the laundry aisle at Walmart.

Wet the shirt and rub the laundry bar into the stain until there is a good amount of the soap in the fabric. Wash as usual.

I second the Fels Naptha suggestion. I've used it to get the red earth stains out of my sons clothes and it worked very well. If for some reason that shouldn't work, you can always make a diluted Clorox mix and saturate the pits, let sit, then wash. Be careful though, if the Clorox isn't diluted enough it will eat your fabric!

Saturate the underarm in straight white vinegar. Let it soak overnight. This will break down any deodorant buildup in the fibers. Then wash on hot with an oxygen bleach.

I use spray n wash and that helps a lot. Makes it smell better too.

I have found very little to get of them. However, I have heard that the aluminum in antiperspirants combined with sweat causes the stains. You might be able to switch to a non-aluminum based antiperspirant, like Toms, and see if that helps.

My understanding is that this happens to ALL clothing, but we only see it in our "whites and lights"... it's a deodorant/ sweat stain. My grandmother used to do a load of whites/lights every day is very hot water to prevent it, but in all reality she just stretched out the "life" of the shirt!

I have gotten into the habit of purchasing inexpensive "summer whites" because they just don't hold up year-to-year, no matter the fabric or the washing method.

You may want to try Oxyclean. If it takes out formula... it will probably take this out!

I have the same issue. It is from the aluminum in the deodorant I wear. On the days, I am wearing white or yellow, I switch to a deodorant without aluminum. I don't think it works as well, but it saves my clothing. I was able to get some of the yellow out by soaking the shirts in a five gallon bucket with cascade added to it. Sometimes it works better than other times. I am sure it has to do with how long the shirt has been stained and the cascade to water ratio. I used 4 cups of cascade and let it soak for a day and then washed regularly in the washing machine.

Get one of the Bleach pens and use it on the spots. That's what I do.

I remember the days when this happened to me. So disappointing. I no longer have that difficulty and have wondered if it's because I'm using a different deoderant. I use Mitchem's now. Been too long; don't remember what I was using then.

I also wonder if it's the fiber content of the blouse. I used to wear a lot of blends; now mostly cotton and perhaps spandex.

And.....another possibility. I used to wear them 2-3 times before washing and now it's just once and wash soon afterwards not giving time for anything to develop.

I noticed, back then, that the area repelled water and tried rinsing the underarms out right after taking the blouse off. I don't remember if that helped.

Now, I'd try soaking them in OxyClean. That gets out nearly all stains for me.

When my white tank tops n such start to get a little yellow I run a load with detergent and quite a bit of oxy clean n bleach it works every time especially if they are all white

I have never been able to get the stains out but surely there are methods which work. If you use deodorant (without aluminum) instead of anti-perspirant (with aluminum), then you won't have the staining. My issue is my body odor was too strong with the switch to deodorant. I don't want to smell awful at the end of the day. Also every deodorant I tried gave me a rash and discolored my underarms. My husband successfully changed to deodorant but he had to try a few brands to avoid the discolored underarms. The discoloration took a few weeks to go away. I think it is harder to find the non-aluminum products in stores but online it should be infinitely easier. I am not much of an online shopper, though. Good luck.

No clue how to get them out. I use Tide with Bleach Alternative and see very few stains in our laundry that make it past that.
Just wanted to mention that you can but underarm shield that stick to the clothing. That might prevent them. Google "dress shields."