Davin Lim, MBBS, FACD - Account Suspended says:Bottom line, Co2 works much better, however side effects in ethnic skin types are higher- namely PIH or skin darkening. I do use PICOSURE FOCUS for early scars, or dark scars in ethnic skin types. Video explains lasers and other methods to treat scars. All the best, Dr Davin Lim. Brisbane. A...