1)acne scar with crater,
firstly, need to assess if the skin has healed well before a gentle subcision of the the crater scar. This is followed by a resurfacing, best by a fractional resurfacing laser. Otherwise a spot chemical peel will do well too. often multiple sessions will be needed for both laser and chemical peels.
2)pigmentation
it can be many types of pigmentation, from freckles to Post-inflammatory pigmentation(PIH) to moles. pigment laser work well for freckles, but there is down time for 3-5days. PIH can be treated with nonablative laser and creams. Moles can be treated with ablative laser after careful assessment by the doctor.
Thanks
