For all skin types, we recommend starting on setting one. If your skin responds well to the treatment you can then increase the setting by one setting each week. If the skin still feels sore 5 hours after the treatment, we recommend decreasing the setting the next treatment. If you have tinted skin, we recommend building up the setting more slowly and being extra alert to sensitivity. Too high a setting can burn your skin faster. If you have dark skin we do not recommend using our device.