How about the Vitaran treatment for overcoming internal dryness?

Hello! I'm really worried because spending too much time under the air conditioner has made my skin feel extremely dry deep inside. No matter how much moisturizer I apply, my skin feels oily on the surface but feels like it's cracking from the inside—I have combination skin. I'm looking into Vitaran treatment, which uses salmon ingredients to regenerate the skin barrier. People around me have highly recommended it, saying it's the best for tackling inner dryness. I'm curious if a proper moisture film forms thanks to the direct injection process. How long do the raised injection marks usually last after the Vitaran procedure? I would be very grateful if those who have received the treatment could share some realistic tips!