How often do I need to receive treatment for melasma?

Hello. Lately, the melasma next to my nose has gotten very severe. I am looking into melasma treatments, but I am having a hard time deciding which method to choose. When I search for reviews online, I find various treatment methods, but I am curious to know which one is actually suitable for my skin condition and effective. In particular, how long does it take to see noticeable results after receiving treatment?

I am curious if I need multiple sessions for melasma treatment, how many are typically required, and whether the effectiveness varies depending on the number of treatments. I am also wondering if the skin can become sensitive after treatment. I have sensitive skin, so I am very worried. I want to get rid of my melasma, but I am afraid of breakouts. I am a bit concerned that the treatment might be too irritating, so I am worried about whether I need to receive it frequently to see results. I would like to know how it was for those of you who have received melasma treatment with sensitive skin!