There was a group of us that used to share office suites when I was practicing esthetics. We had a very nice and very experienced lady who made her living doing electrolysis. This is the little that I know just through visiting with her. Electrolysis is only effective when it is performed during a certain phase of the hair growth and since hair does not all grow on the same cycle, repeat treatments are necessary for desired results. It is expensive and it is painful. I had her do a couple of hairs on me because my clients were always asking about it and I did not know what to tell them the experince was actually like. EVERY hair follicle must be individually zapped......OUCH...and basically that is exactly what is going on ...the follicle is being electrocuted. I don't see how this would be feasible for larger areas, but I don't know what you are considering it for.
I am a huge advocate of safe sun/tanning rituals, as almost all the adults I know, including my husband, are getting all sorts of skin cancers removed from sun/tanning exposure. My advice would be to start using safe self-tanners or something like booth spray-ons, such as Mystic, and go for the laser treatments after you skin heals itself from the tanning damage. I think you will be much happier with the results and you will spare yourself from too rapidly aging your wonderful skin.
I hope this helps.
-Debra