My skin is dry and oily, so I get a lot of troubles and produce a lot of sebum all the time. So, after my college entrance exam, I've been treating my skin with extrusion and laser treatment 10 times. It definitely seems like less sebum comes out or is gently extruded. It is said that laser reduces sebaceous gland activity, but the effect does not seem to last long. I'm getting extrusion + laser treatment about once or twice a month, and my skin texture feels a little better...? Hahaha, there is a slight scar after the extrusion, but I think it will improve with additional treatment.