A Blue-Rinse is a very light blue hair dye
popular among the over 50s. The main reason for this peculiar choice
in hairstyle is the deteriation of the human eye
As the eye gets older, the lens begins to take on a yellowish colouring. This happens so gradually, that the old codgers
don't even notice that they are now seeing the world in a slightly yellower part of the electromagnetic spectrum
than they once were.
Consequently, by dying their hair blue
, they can achieve a very distinguished
grey look before their peers.