I'm worried about the side effects of high intensity.

My fine lines are getting worse and my skin feels saggy, so I am seriously considering high-frequency treatment to replenish collagen. I like Density High because it is the latest equipment, so it is said to be minimally painful and has powerful cooling capabilities, but I am scared about potential side effects, such as burns or sunken cheeks.

My skin is quite thin, so I am extremely sensitive to heat from lasers. Even though everyone else says it is good, I hesitate to make an appointment because I worry it might be harmful to my skin. For those who have actually received Density High, have any experienced any major issues other than swelling or redness? I want to carefully consider all factors because I want to safely improve my skin's elasticity.