[Seeing those shoulders sag in relaxation is the greatest reward he could ever receive from something like this. Second place would be liking the work he does, but even if Sif is ambivalent on that front, he's happy just for the chance to pamper them. They deserve it! He starts tracing his fingers through the different layers of their hair as he combs it, working his way around to the back.]

I don't think it looks awful. There are some hairstyles that purposely dye the tips, and yours has grown out for so long that it pretty much looks like that now.

[He huffs an amused breath.] And if you don't wanna keep up with your hair anymore, trim or not, you can just let me take care of it from now on.

[He got to ask! And it was fairly natural! Score.]