I want to know the benefits of various blemish treatments!!!

After going flower viewing in the spring, pigmentation issues like melasma and freckles suddenly flared up on my face, making my complexion look uneven. I tried my best to apply sunscreen, but it seems it wasn't enough. There are so many types of blemish treatments available—from laser toning to IPL and Pico toning—that it is really hard to choose the one that suits me best. I’ve heard that the specific machine used varies depending on the depth and type of pigmentation; what equipment offers the advantage of a treatment where a small scab forms and then falls off without interfering with daily life? My skin is sensitive, so I want to avoid anything too irritating or that leaves redness for a long time. I would appreciate personalized recommendations from those knowledgeable about blemish treatments so that I can return to a clear and radiant complexion!