Initially I had looked at the NuFace products, but was hesitant to purchase because of the price and not so great reviews. I decided to go with the Skin Care Experts machine instead. The only downfall I've noticed is that this doesn't have a 5 second beep like the NuFace does. The instructions are also really vague. I ended up watching several You Tube videos by NuFace to learn how to properly use the machine. After watching those videos and using the machine for a few days I started to notice some slight improvements. The first of which were the laugh lines. They quickly started disappearing. I use each attachment as part of my routine daily. I typically use the machine for 20-30 minutes. I have not had any side effects from using it. Occasionally I will feel a little shock or twitch, but it's not so bad that I can't stand it. It usually means I need to turn it down a notch. I'm anxious to see what the results will be after using this every day for 30 days. It isn't "instant" like NuFace claims to be, but after a few uses, I think you will see some subtle differences.