Owen,
If you give me your email address I will email you two books on ozone. To get rid of age spots use a funnel on the area. Your ozonator has to have a tube coming out to do this. You said the spots were on your hands, so you won't probably get the rash I talked about with Diane. If you do get it and can't stand it, just apply the ozone for less time until it's comfortable for you. I would try it for 5 minutes at a time. It will probably take about a month or two to get rid of it.
Gaylen