The world of perfectly highlighted hair is fickle. One minute, it's all about balayage, and before you know it, foil highlights are back. Right now, the trend of foilyage, a hybrid of balayage and ...

When balayage came along, it was like all our hair-color prayers had been answered. Finally, we could kiss goodbye to tiger-stripe highlights and hello to softly sun-kissed, multidimensional color.

As I lie sprawled out in a leather chair in one of London’s smartest and most exclusive hair salons, my stylist fusses behind me with a paintbrush. There is serious work going on. In hairdressing ...