I asked on Unpa a while ago if this was any good, and after thinking it over, I finally bought it! Haha. I haven't been able to open it yet because I've been busy, but I'm really looking forward to it... *nervous*...🥹 I heard it works on the principle of using medium frequencies to massage the muscles, just like acupressure massage. I'm worried about my face shape and double chin, so I hope this works! I'll use it diligently and leave a review to let you know if it's effective.