Women who dye their hair are more sexually confident
Researchers said that women who dye their hair experience an increase in feelings of attractiveness to the opposite sex and general confidence.
It means that artificial blondes are more likely to ask someone out on a date or even broach the topic of a pay rise with their boss.
Dr Mark Sergeant, who led the team of experts linked to Nottingham Trent University, said the changes in behaviour were "significant".
He said: "Colouring your hair may seem like an art to most people, but there is actually a lot of science behind it.
"Not only were their confidence and mood levels elevated but also their inhibitions seemed to be mitigated with many reporting feeling more attractive and sexually exciting.
"There was a marked improvement in the ability to express their opinions and ask for things that they may not ask for ordinarily in a work environment."
The study, commissioned by Clairol, also found that women who dye their hair blonde were also more likely to question authority at work or raise complaints.
More than 50 per cent of the 205 women studied said they coloured their hair purely to "get attention" from strangers or "be noticed" by friends and colleagues.