How are the location of pigmentation and skin sensitivity checked during a laser consultation?

I am curious if the recommended care varies depending on the location, color, and boundaries of pigmentation, even for those that appear similar on the surface, during a laser consultation. I would like to know if the consultation relies solely on visual inspection or if there is a separate process for a detailed examination of the skin condition, as well as if recent UV exposure or the cosmetics currently being used are also checked. If my skin tends to redden easily or is dry, how are the laser intensity and treatment intervals adjusted, and are there cases where the skin condition is stabilized before starting treatment? I am also curious about the period during which I should refrain from using exfoliants and functional cosmetics before and after the laser treatment, as well as methods for cleansing, moisturizing, and sun protection. I would also like to know how to distinguish between temporary redness or dryness that may occur after treatment and reactions that require consultation with the clinic. Please explain the timing for evaluating the skin reaction after the first treatment, whether repeated treatments are necessary, and the criteria used to determine the next treatment interval.