Inquiry about nose melasma treatment

I am concerned about small brown spots on my nose that look like melasma. They were barely noticeable before, but recently they seem to be getting darker little by little. They feel different from freckles or blemishes, so what kind of treatment is effective at a dermatology clinic in this case? If I were to undergo laser treatment, I would also like to know which type would be suitable. I am curious about the number of treatment sessions, the cost, and potential side effects such as redness or hyperpigmentation after the procedure. I would also appreciate it if you could review the photo to confirm if it is indeed melasma or if there is a possibility of it being another pigmentation disorder. I usually use sunscreen, but are there any specific care methods I can do at home? I am worried because it seems to be spreading.