I got it around 2023 because I had really bad chin acne! I received it at an event price from three hospitals (Seoul Beauty Clinic, Heyday, and Aviju), and among them, Seoul Beauty Clinic seemed to be the most sincere! Since this is what tightens the sebaceous glands, I don't think I've had any chin acne since I got it? It just feels like it's hot and it doesn't hurt at all. Haha. If you're worried about acne, give it a try.