Clairol is a brand of hair-coloring in the US as EAH has stated.
I noted with fascination how Willnot's MIL's hair changes color.
In photos it looks to me like a home hair-coloring attempt --
color too flat or brassy, flyaway hair. Not so good.
A GF sent an excerpt to me from some comments on Celebitchy
in which the MIL was referred to as Clairol. When I read it I choked
on my coffee laughing cuz it seemed a good moniker.
So...I've imported it into this board.
Now you know.
I must admit I particularly enjoy the HeirNot nickname.
Clever. The challenge will be naming #3, if there is one.