What may be a nightmare for supply chain managers is a dream come true for cosmetics-crazed consumers. South Korea's top cosmetics company Amorepacific Group launches some 400 new Innisfree branded products a year, about half of which are no longer available a year later. It's one of dozens of Korean mass cosmetics brands with a short product development cycle—a “fast beauty” approach that is increasingly popular among Chinese and other Asian millennials, gaining expos...