Has anyone seen various effective results from melasma treatment?

The manager told me that my skin is a typical type where pigmentation is deeply intertwined not only on the surface but also deep within, so a long-term melasma treatment program is essential.

The problem is that I’ve heard that receiving melasma treatments like Pico Toning or Laser Toning incorrectly can lead to an energetic side effect (rebound hyperpigmentation), where excessive irritation actually causes the pigmentation to darken, and I’m suddenly very scared. How much pain or heat sensation is expected during the procedure, and will swelling or redness persist for a few days immediately afterward, interfering with my daily life?

I am curious to hear from someone who has actually completed a melasma treatment package at a dermatology clinic by consistently signing up for sessions.