What are the features of Quadsay?

I have sensitive skin where my face quickly turns red and the heat sensation lingers for a long time after laser treatments. Recently, while looking for a treatment that simultaneously soothes irritated skin and strengthens the skin barrier, I learned about a procedure called Quad Say. I was very interested because it is said to improve the skin's internal environment using ultrasonic energy.

I am curious about the distinct characteristics of Quadsay compared to standard LDM or hydration and soothing treatments. I would like to know if it is actually minimally painful or irritating, and how effective it is in improving redness and dryness. I would appreciate it if you could share the main features of this procedure or reviews from those who have received it and found it helpful in calming their skin barrier!