This laser is easy to use and does not cause harm. All I have to do is follow the instructions and it is easy to figure out how to use flash mode and gliding mode for continuous laser irradiation. I am grateful that it is equipped with special glasses so that my eyes will not be hurt. I did not see redness or adverse effects. However, it takes a while for the results of hair reduction to show up, and I haven't had enough time to know this. But I still like this laser beauty equipment.
