i am beyond shocked when medicube sent me this! as someone who is still a teenager (18 turning 19) i didn't know if I should use this kind of stuff but of course i had tested it out. and this WORKS! i have been using it for three days now and my skin always feel soft and plump every session. i do this 5-10 mins focusing on the eye area, smile lines, and forehead. i havent tried the other modes but i have been loving the booster mode level 1-3!