How satisfied are you with the melasma skin booster?

I am stressed because my melasma seems to have suddenly darkened and is difficult to cover even with makeup. At first, I thought they were just simple blemishes, but as time passed, they seemed to be spreading, so I realized I needed to take care of them. I was recommended a melasma skin booster during a consultation at a dermatologist, but honestly, the name is unfamiliar, and the advertisements all sound great, so I am still debating. If anyone has actually tried a melasma skin booster, I would like to know about your satisfaction level. I want to know if you feel your skin tone becoming more even, or if it just looks better for a short while. I am also curious how many sessions are needed to see noticeable changes. I am also worried about whether my skin becomes sensitive or if redness tends to last a long time after using the booster. The cost is also quite high, so I am having trouble making a decision. I would like to hear honestly from those who have actually used it about their satisfaction, reasons for recommendation, and even any downsides.