I have used the same spray deodorant for about 5 or 6 years. I am 36. Suddenly it stopped working about a month ago. What has caused this? What can I do? I tried a few other brands and types.i.e. roll on and stick but they don't work either. Any help would be grand.

Here's an article that might help you.

http://www.articleriot.com/articlede...Best+Deodorant
How To Choose The Best Deodorant

By : Jim Brown
Submitted 2007-06-19 00:44:18

... Second, study your body type's structural attributes. Take for instance if you're slender and tall, are you small-boned slim or big boned-slim? If you have an athletic built, do you think your weight consists more of bone weight, body fat or muscle weight? Take note of your answer to these questions for this will determine how deodorant deals with your body.

Third, you must now consider other factors affecting the type of body you have. Are you suffering from a disease or illness that has altered your body or has affected your body to react to certain products such as deodorant?

Fourth, examine the kind of lifestyle you have for this also contributes to body type or how your body responds to certain products. Consider factors such as your workplace, activities you usually participate in, kind of food you consume and the degree of stress you often encounter. All these affect the method your body acts with deodorants.

Fifth, it's time to do the deodorant decisions just right for your body structure. If you have the type of body that has less body fat, choose a mild deodorant for this would be enough to fight the less body odor. If your body type is larger, you must consider getting a stronger deodorant since your body will tend to secret more odors. However, if you have any sickness or disorder that affects your skin making it sensitive to certain products, get a hypoallergenic deodorant. As much as possible, it must be unscented or has natural scent.

Lastly, consider your lifestyle again. If there's anything you do that makes your body secrete less or more odor, opt for lighter or stronger deodorant whichever is appropriate.
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Or there are natural deodorants, if you would prefer to check them
http://www.targetwoman.com/articles/deodorant.html