Oscar-nominated actress Demi Moore is the new global brand ambassador for luxury professional haircare brand Kérastase. Renowned for her fearless spirit, The Substance protagonist epitomizes liberated femininity at its most inspiring and a symbol of timeless beauty, brand officials say. Celebrated for her signature long, jet-black hair, Moore has been known to push the boundaries of hairstyling, brand officials said. Whether it’s a shaved-head or a modern pixie, Moore has experimented with...