Have you ever looked at the ingredients that go into a deoderant and found that in about 99% of them the main ingredient is aluminium hydroxide? having been advised from a health point of view to avoid aluminium products as much as possible (my homeopathic doctor believes that too much in the body contributes towards cancer causing factors) it has been a rather fruitless search. Until i discovered Clarins deoderant spray in a red bottle. There is no mention of aluminium in the list of ingredients. It smells nice- but I don't think it is quite as effective as the aluminium containing ones- but it does work.
However as a healthier alternative it is the one i will be buying. I bought mine in March and need a new one now (beginning of July). It costs about £11, so not cheap-but what price is peice of mind.