I know some reviews say it's slightly painful when using it on your face but I think it's subjective. I don't feel any pain while using this but moving on from that this pen works very well. After just a few uses I could tell the difference easily. I'm 43 years old and I been told several times over by many that I look 10 years younger. I didn't think much of this product at first, believing it was just another over priced infomercial type of product that promises this and that and doesn't live up to the hype. I can't say this about this Dr Pen because this is actually the real deal. If you get this it's money well spent! Definitely has my recommendations 👌