Blue rinse
Hair coloring
From Wikipedia, the free encyclopedia
A blue rinse is a dilute hair dye used to reduce the yellowed appearance of grey or white hair.[1][2]

The blue rinse gained popularity after Jean Harlow's appearance in the 1930 film Hell's Angels.[1][2] Queen Elizabeth the Queen Mother also contributed to the popularity of the blue rinse in the 1940s.[1][2] Israeli politician Benjamin Netanyahu uses the style.[3]
In British politics, the term "Blue Rinse Brigade" has been used to refer to affluent older women involved in conservative politics, charity work, and committees.[4]