Eyebrow groom not animated with blendshapes

Hi, I researched and followed all the right steps but my eyebrow groom is not moving according to my character blendshapes. It stayed attached but doesn’t animated/follow along the blendshapes.

Not sure what I can do to fix it. Is there any samples projects with attached eyebrows/eyelashes that animated along with the blendshapes?

thanks

Update - Seems no one is answering so my question now is that does this way of binding the eyebrows and to deform it together with the blendshapes doesn’t exist? I can’t seem to find anything related to this except for binding the hair to the head.

Turns out that I had default skin cache behavior not switched to inclusive for some reasons which I thought I already done so.

The lesson here is to double check everything.