My skin might look a little red and the end of using the machine. It didn’t sting my face, it’s just the blue color setting does a little pulse zap to the skin for pore care. It makes sense this one is recommended to only use 2-3 times a week, not daily like the other colors/ones. The machine didn't bother me when it was making the little pulsing noises on my face, it didn't bother me but a person who doesn't like it when a machine taps their skin might freak out the first time trying it out. The machine you are mandatory to use a moisturizer with and to be honest at first I thought my moisturizer was not going to soak into my skin. There was only a streak line of moisturizer left on the tool once I used all the modes. The booklet that came with the tool, made it easier to understand what each color does and I learned there a different motions you have to do, one example is holding for two seconds in one spot rather than moving around the tool the other one is you do circle motion only on my face.
