What is the duration of the effects after the melasma skin booster treatment, and what is the touch-up cycle?

Hello. I am a member in my 30s seriously considering a procedure to change my dry and dull skin tone. No matter how often I use face masks and whitening creams at home, my skin only looks shiny on the surface, and the dark spots emerging from deep within remain unresolved. Therefore, [the procedure involves] directly injecting active ingredients into the dermis layer of the skin... Dark spot skin booster I became interested in the procedure. However, after listening to people around me, I heard that while the procedure itself is simple, it isn't permanent, so periodic maintenance is essential.

So, here's my question: usually if you get it right once... Dark spot skin booster On average, how long do the effects of the treatment last? It also depends on the product ingredients and the individual's skin regeneration rate. Dark spot skin booster I am curious if there is a significant difference in the maintenance cycle. Also, to maintain the initially clear skin beautifully for a long time, I would like to know roughly how much time needs to pass before I go back for another treatment before the effects completely wear off. Originally Dark spot skin booster I've heard that you need to get the same skincare treatment about three times in a row at the beginning to prolong the effects. Is that really true?