How long do the pads in Neutrogena healthy skin rejuvenator last?

I use it for 10 minutes, then I throw it in the trash. Is this wasteful? I still see the blue stuff on it.How long do the pads in Neutrogena healthy skin rejuvenator last?
I have that thing and I only use it for 5 mins (but your supposed to use it for a about 3 oh well) anyway no it isn't wasteful no matter how long you do it the blue stuff just stays there so don't worry and I would suggest maybe cutting down to about 5 mins using that thing cause it may dry out your skin.How long do the pads in Neutrogena healthy skin rejuvenator last?
geosuperdottv