Just a quick look at these three tools that I used to massage my face and decide which one to keep. I don't know their names so I'll refer them by color.
Kindly read Oh Looky before proceeding to read, thanks.
Black is a souvenir that I got from Taiwan. It's a multi purpose massaging tool for different parts of the body (as demonstrated by the nice grandma who did his very best to communicate with me through body language) but I mainly use it for the face. The curve is surprisingly perfect for my jaw lines and I used the top (or bottom) side part to the rest of my face. It's thin so I have to be light to avoid hitting my bones (it hurts when it happens and definitely need some cream or oil for it to glide smoothly).