It's hard to tell what's a fad and what fashion will last forever. In the moment, you think that those neon fishnet fingerless gloves are the coolest things you've ever laid your eyes on. Or maybe you fell for the trend of chunky highlights, which were supposed to make you look like a celeb. Instead, many of us left the salon with skunk stripes in our hair, or very obvious highlights that weren't complementary. Even if you look back on these memories with immense cringe , I think it's still nic…