Hi I am 40 and purchased a package of 4 BBL treatments but was told the results aren't permanent and I'd need a touch up once or twice a year. Im curious though, I have a lot of dark spots from sun exposure and would like to have them removed. Would they just reappear after getting this done after I go to the beach for the first time? I don't want to just throw my money away if the spots just come back with a few minutes of sun exposure (even with sunscreen). Thanks.