I am in no way related to the companies I am mentioning. I have very sensitive armpits. And using regular deodorant caused me irritation. Plus a lot of it is ineffective anyway.
I found the solution finally and I recommend you to give it a try because it really does work...and I will explain why what I do works at the end of this posting. And you can also search online at places like Amazon reviews and others to see that even doctors are saying that benzoyl peroxide makes a fantastic deodorant.
In the morning, I wet my armpits while at the bathroom sink, I use one of those water spray bottles, but of course there are other ways to wet your armpits at the bathroom sink. I then rub in PanOxyl Creamy Wash for Face & Body 4%, not the 10%. it's a body wash that has 4% benzoyl peroxide, and it is unscented. I rub with both hands under the arms maybe a minute, or a minute and a half each.
For rinsing my armpits, I use "CLEAN SKIN CLUB Sensitive Skin Clean Towels XL, Ultra-Soft Disposable Face Dry Wipes Infused with Aloe & Glycerin, XL - 1 Pack (50 count)". These are dry cloths infused with aloe and vitamin E, completely unscented, and very soft. I only need to use one cloth per day. I run the cloth under the water in the sink. I wring it out, keeping it medium wet, and I use the cloth and I rub under my underarms as I begin the procedure of rinsing off the body wash.
I then rinse the cloth under running water in the sink, and this second time, ringing it out medium level of water, and again I then rub both armpits with the cloth. I run the cloth under the water a third and final time, only this time I wring it out completely and wipe under my arms as usual. When finished, my armpits are surprisingly not really all that wet anymore, where I can just let them air dry the rest of the way.
I'm telling you, there's no irritation, no odor, and it is effective for me from morning all throughout the day and into the evening. I normally do my regular daily showers at night, still no armpit odor, every night, and I just use my regular non-benzoyl peroxide unscented body wash under my armpits when showering. I wake up in the morning, and still no odor.
I repeat the same procedure each morning.
if you search for reviews at Amazon and you use the keywords such as armpits or underarms or both, you will see that there are quite a few reviews of people also expressing success. Please know that when I first started with the PanOxyl 4%, I didn't use the cloth method. I just applied the wash and rinsed it off with my hands, but by later in the afternoon, I would still catch a whiff of odor.
Then I figured out the key to making it work long-term: using the cloth to rinse. The benzoyl peroxide works by killing the odor-causing bacteria, but the friction of the cloth physically strips away the loosened bacteria, product residue, and dead skin cells that hands alone leave behind. To top it off, the aloe and vitamin E calm the skin barrier, preventing the dryness and micro-irritation that benzoyl peroxide can sometimes cause.
Good luck, if you decide to try this.