(Question) What is the procedure with the least pain?

With the change of seasons, my entire face feels dull and dry, which worries me. I need to replenish moisture, so I am looking into various hydration treatments. However, since my skin is naturally thin and sensitive, I feel pain quite strongly, so I am concerned about the severity of the procedure. Therefore, I would like to know which hydration treatments are relatively less painful, if anesthesia is required, how long the effects last, and what care methods are available to maintain the results for a long time.