Why is it that wet hair is darker if water is colorless?
What Guys Said 2
Probably for the same reason that rocks are darker when wet: when dry, tiny cracks and groves reflect white light (rough surfaces in general do this). Water "smooths over" many rough surfaces by filling in those groves so that the material's natural colors come through. This is also why surfaces look darker when polished and lighter when scratched up. I assume the effect applies to hair too.
Good, original question!2
only a lock. single strands don't show any difference.0
What Girls Said 1
*inserts wide eyes emoji*1