No, she looks good. The grey streak is EVERYTHING...Besides, I would never vote for or against someone on the basis of their appearance. My objection to her is rooted in the fact that I don't believe her evolution from conservative to liberal was authentic. This article
does a good job of discussing that transition. I don't trust her to be anything but a noninterventionist moderate on all issues except healthcare, and that's not really what I want. At that point, I might as just well vote for a noninterventionist moderate like Huntsman or Kasich, who has much more experience in government than she does. A Gabbard vs. Huntsman campaign would really challenge me, and I am not sure how I would vote.
I will vote for Biden, not because he is my first or second or third choice, but because Trump is so utterly atrocious that pretty much anyone would be a better alternative.