It’s not easy to find a “natural” deodorant that actually works. Having testing most of the natural brands on the market, I’ve found 3 (so far) that really do the job:
Simply Divine Botanicals : Keeping Abreast Of It: If there is only one natural personal care product you purchase this year, this should be it! I wish I’d discovered this years ago. I’ve always love Simply Divine Botanicals, but had never tried their deodorant, which I’ve just found out is their bestseller. It’s a deodorant “with a purpose” because it encourages lymphatic drainage, while keeping you sweet-smelling. Aside from the lymphatic drainage thing, this deodorant really works! I’ve worn it every day for the past week (and it’s 90 degrees here at the moment), and no stinky sweat at all – nothing short of a miracle. They also have a companion product with is a lymphatic drainage cream – it’s actually more like a thick paste that you apply at night. So, that’s my new regime – paste and night and spray in the morning.
Herbal Magic: When I wrote my first book, I tried about 50 natural deodorants and the only one that did a 
good enough job (that I could use when public speaking etc) was Herbal Magic. I’ve recommended it hundred of women since and had no complaints. It comes in 1 of 3 scents: Jasmine, Lavender or unscented.
Tom’s Of Maine Unscented Original Care: This is a simple deodorant for the man or woman who wants a basic and not-at-all-fancy deodorant. My husband has sworn by this specific 
deodorant for years. If I buy him anything else, he complains. He says the texture is great for men with hairy pits, because it’s not sticky and does a really good job.
