I am worried about facial pigmentation. Is laser treatment the answer?

As I get older, my facial pigmentation has inevitably become noticeably darker, and I am under a lot of stress. Even though I thought I was diligent about applying sunscreen, the patchy discoloration around my cheekbones and mouth shows no signs of resolving with home care alone. It is a major concern because my complexion looks dull every time I look in the mirror, and it is difficult to cover even with makeup. I feel I need professional care now, so I am looking into dermatological procedures that are effective for facial pigmentation. I am curious to know how effective methods like toning or peeling actually are for improving pigmentation. Would these procedures be effective for deep-seated blemishes or marks like mine? I would be very grateful if you could provide detailed information on post-procedure precautions and how long the results last with consistent care. Since my skin tends to be sensitive, I really want to find a procedure that is less irritating yet provides 확실 results.