Questions regarding Rejuran Healer improvement of internal dryness

Hello. I am someone who is troubled by severe internal dryness that worsens every time the seasons change. No matter how much moisturizer I apply or how often I use face masks, the feeling that my skin is shiny on the surface but parched underneath just won't go away. Right after washing my face, my skin feels tight as if it is going to tear, and my makeup keeps caking, so I am looking into skin boosters. In particular, I have heard a lot about how Rejuran Healer is good for tackling internal dryness, so I am posting this to see what it is actually like.

Does Rejuran Healer really hydrate the skin from deep within and relieve inner dryness? I am curious how many sessions are typically required to see improvement in internal dryness, and how long the effects last. I have also heard that the pain is severe; I wonder if it is bearable if sufficient painkiller injections or anesthetic cream are applied. I would like to receive advice, including how long the treatment marks (embossing) or bruising last.