I'm looking into melasma treatments* Skin boosters, toning lasers

I'm worried because the faint blemishes on my face seem to have suddenly darkened after spending a lot of time outdoors during the scorching heatwave. I've been diligently applying sunscreen, but it seems like there's a limit to how much it helps, so I'm currently looking for a dermatologist to get melasma treatment. People around me say that combining treatments like toning lasers or skin boosters helps, so has anyone here undergone melasma treatment?

I am curious to know which combination yielded the best results. I would be very grateful if you could share actual reviews and points to keep in mind during daily life after the melasma treatment.