Deodorant Build-up?

Does anyone know how to remove the built up hard yellow stuff in the armpits of shirts? I have been told it is a deodorant/antiperspirant buildup. It is unsightly and uncomfortable to wear as it is very hard, let alone looks dirty, even if just laundered. Any hints and help is appreciated!


By Beau from Vancouver, WA

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September 21, 20090 found this helpful
Best Answer

I wear a lot of black. Unfortunately the antiperspirant that works best for me is a white solid kind. As Megan F. mentions, try rubbing the underarm areas with a pantyhose when damp before drying. The texture of the pantyhose works better than anything I've found so far.

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March 27, 20180 found this helpful

I know this is an ancient thread but as I've just discovered an answer, I thought I'd share. I have been trying ideas and products on the build up of antiperspirant forever with little success.


The other day I bought some hydrochloric acid from the builder's merchant for removing a stain on my tiled bathroom floor. I had an old t-shirt that had a really thick layer of this build up on it and thought ; Why not. I could always throw the t-shirt out if it was ruined.
Wearing rubber gloves, I soaked the armpits in 33% hydrochloric acid solution for half an hour and then washed it with my other stuff on a cold wash (I always wash everything cold). Magically, the entire hardness and stain was gone without affecting the t-shirt at all.
If you're going to try this; remember that I've only done it on a thick cotton t-shirt so it might destroy manmade fibre! Also remember to wear gloves and glasses or goggles in case you splash it.
I hope this helps as it's the only solution I've found that actually works.

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September 21, 20090 found this helpful
Best Answer

I use Mean Green on the underarms of my husband's shirts and it helps with deodorant buildup. However, I have only tried this with white shirts. The spray recommends you test it on an inconspicuous area first if you are in doubt about it discoloring something.


I've heard that you can drop a couple of plain aspirin in the wash with new white tee shirts to prevent buildup in the first place.

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September 27, 20090 found this helpful
Best Answer

Make a paste of baking soda and white vinegar and place this on damp clothing (area like under arm). Or put white vinegar on shirt then baking soda and add a bit more vinegar till it fizzes, then scrub away and wash.

If you can hang it out in the sunshine, that will help too. They also sell "whitener" the people who make RitDye has these and use in the yellow areas to get the dingy color out.

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December 5, 20091 found this helpful
Best Answer

I had a black polyester Nike work-out shirt that had the white caked anti-perspirant in the under arms. I boiled a full tea kettle of water and poured it through the fabric, then laundered as usual and the build-up is gone now.

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September 25, 20180 found this helpful

I soak each shirt, for at least 1-2 hrs, in a small amount of extremely hot water with a ton of OxyClean powder! Seriously, just enough hot water to saturate the shirt, and three or four capfuls of the OxyClean powder.



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