This doctor recommended, perscription strenght certain dry, anti-perspirant did not work to well for me. I says to only apply before bed time then in the morning it will last for 72 hours. I followed the instructions as it told me and I did not get much out of it. It worked for me just like any normal deodorants would. You are not suppose to apply after shaving, or after taking a shower or it will itch like crazy. There is not a fragrance to this ani-perspirant, and it come on clear, it feels just like you are rubbing water onto your skin, so you have to wait for it to dry or soak into your skin or you clothes with soak it up or rub it off. For a while I had a problem with excessive perspiration and was looking for something that would help, and this certain dry was not it. If you are looking for a deodorant to help with excessive sweating then I strongly recommend a different brand because this one works just like any normal deodorants, it just has a bigger name and you have to follow instructions to put it on. This is not the best choice.