Fillimilli Gua Sha

Fillimilli V-Face Gua Sha

This is the Fillimilli V-Face Gua Sha.
It is a gua sha specialized for the face line, so it is small.
I was thinking of using it when washing my face or taking a shower.
Since it's made of glass, I'm a bit worried, so I'm using it quietly only in my room.
I don't think the lines suit my face very well.
For starters, I don't really use it much because it's a hassle.