Does anyone know how long a chemist brand treatment 4 excessive persperation would start to work? It's Driclor?

I'm sixteen and never had much of a problem with sweating until recently, so I decided to take control of that and get a chemist brand treatment. It's called Driclor and the active ingredient is aluminium chloride. You put it on at night time and wash it off in the morning and it is supposed to block the sweat glands and prevent sweating completely. You're supposed to use i every night until you can cut that down to once or twice a week, because your skin will have obsorbed enough to last I guess. But it said on the leaflet that some people may experience stinging and irritation, which I deffinately have. I had to sleep with ice packs under my arms last night because of the pain. So i think I'll wait a couple of days for that to clear up, but I was wondering how long it will take for Driclor to really do it's work and stop my sweating. If anyone knows about this product or has used something similair before, any advice would be great. Thanks guys xo