I had about 10 treatments with a Picosure laser for my sunspots and every session the settings were made stronger than the last. Unf. the place I was going to closed down so I had to go to a different office. New derm says it’s necessary to use a Picosure focus lens and that I’ll get better results this way. That it’s less irritating on skin and goes deeper. Is this correct? My spots have significantly lightened/broken up but there is still light pigment left.