Ginger spice, mahogany, cherry red ... After all, McCool adds that a good stylist will tailor the hair dye to your skin tone and undertones, as well as your eye color. "Warmer tones can work ...

This month, Sweeney dyed her almost trademark blonde hair a lighter shade of copper: a colour known as “mahogany blonde”. “This shade is an earthier version of the well-known strawberry blonde.