could someone help with my metahuman's eyelashes please?

Hi everyone, I was wondering if anyone could help me out. I’m kinda new to this whole thing with making my own methuman character. (This might be a quick fix, but I haven’t been able to find any tutorials or posts haha)

It was going fine until I realised the eyelashes were invisible. As in, when I went into the character’s mesh and “highlighted” the eyelashes, they would be outlined, but clearly nothing was there. I did some research for videos, though I fixed it, but then when I went back into my project the next day, the eyelashes looked different AGAIN.. I have not been able to find a reason or solution.

Like, I can now see the eyelashes, but now I don’t know how to get rid of the grey part

If someone could help, I would appreciate it !!!