So I've been super anxious to try this! I have used it one since I received it in the mail. It doesn't hurt by any means but it is honestly the weirdest sensation, especially near your mouth and nose (more sensitive areas). It did make my face very bright red which I assumed would happen, but I suggest for that reason that you use it at night before bed. I used a vitamin c serum after and it definitely made my face feel night and hydrated. Looking forward to the results!