I try to avoid using antiperspirants because of the aluminum and other caustic chemicals they contain. Skin that's been freshly shaved is more susceptible to absorption and that makes the perfect storm when it comes to using commercial deodorants and anti-perspirants.
But when you are not a light sweater and odor wins out at the end of the day, the natural products don't seem to stand up under heavy demand. So what's a girl to do? For years I would succumb to using an antiperspirant when I felt that odor protection was important, like in social situations when I was unwilling to risk the chance of deodorant failure.
But I have found something that works even better and it couldn't be easier or more natural. You probably have some in your cupboard right now. It's baking soda. Yes, the humble little orange box of white powder. I put some in a little lidded container that I got from IKEA and pinch some out and rub onto clean underarms.
A little bit of powder that floats to the floor is okay with me because baking soda is also a natural carpet deodorizer. Save money from buying those chemical laden ones in the store and just use baking soda. The longer it sits the more odor it will absorb for you to vacuum up.
I've noticed this same principle with the baking soda as an underarm deodorant. It doesn't give out. I usually don't go a day without showering, but there are occasions, like going camping, when it's been a couple days and it is amazing how the original application of plain ol' baking soda still holds even days later. No odor!
One word of caution, and that is that baking soda is a mild abrasive so over time it may cause slight chafing where your underarm creases. I just use some silky talcum powder along with the baking soda when that happens and it clears right up.
So for worry free, fool-proof, uninterrupted odor protection, bakings soda is a winner. I think sea salt works, too, though I haven't tried it long term. We have a small container of that in our bathroom too that we use for the netti pot and one day I used that by mistake and it worked!
Don't you love how God made living naturally and healthfully easier than we tend to think?