I'm looking into a skin booster for dark spots. How long does the effect last?

It seems like my skin concerns change as I get older.

In the past, I was fine as long as my breakouts calmed down, but lately, every time I look in the mirror, what catches my eye is my skin tone and the subtle dark spots that have started to appear..!!

I found out about the melasma skin booster at a time when my concerns were growing because even covering them one by one with concealer didn't completely even out my skin tone, and my skin looked dull overall.

Is it true that melasma skin boosters help manage skin to make it look clearer and more even, rather than just evening out the visible tone on the surface? I heard that satisfaction is higher if you start using a melasma skin booster when you are concerned about light pigmentation, before the spots become deeply set. Since recovery speeds have changed slightly compared to the past, I find myself looking for ways to improve skin condition with less burden, rather than treatments that are highly stimulating. It felt like melasma skin boosters fit those needs well. I also felt that they would be a good fit for those whose skin tone looks duller due to dryness deep within.

I'm looking into a melasma skin booster. How long does the effect last after just one treatment? Can I resume my daily activities immediately afterward? I'm also curious about the cost per session!