Frédéric Fekkai has over 30 years of experience in the beauty business and he has racked up an impressive list of A-list clientele along the way.The New York City-based hairdresser is known for his innovative brand and work with Scarlett Johansson, Martha Stewart, Reese Witherspoon, Heidi Klum, Cindy Crawford, and Naomi Campbell, and now, he’s revealing the truth behind haircare rumors and when it’s acceptable to deviate from the norm. «I've encountered numerous myths during my time in the haircare industry, but one that's continued to stick with me is the belief that if you cut your hair during a full moon, it's promised to make your hair grow. Another is the misconception that washing your hair every day will cause your hair to become too dry,» Fekkai tells ET. The facts: «Hair growth comes from internal factors, such as genetics and overall health, rather than the phase of the moon.