Hair stylist Giles Robinson has worked with celebrities, diplomats, and even royalty. Today, he’s sharing his expert tips for achieving a flawless, frizz-free look—perfect for humid weather.

Achieving strong, healthy hair requires work on all fronts. Here are 10 steps you can take to help strengthen your hair and keep it looking healthy.

Summer hair gripes are as plentiful as a bumper crop of zucchini: First, there’s the frizz (thanks, humidity!) Then, there’s color-fade from chlorine, seawater and scorching sun. And finally ...