According to Adweek, the marketing firm behind the concept, Ogilvy & Mather, worked with "food technologists" at McCormick, the spice company that supplies KFC's signature secret mix of 11 herbs and spices, to come up with the nail polishes, which are designed to hold flavor but still dry to a glossy finish. It isn't immediately clear if the nail polish is more like a savory lolipop shell or like a scratch-n-sniff (taste?) sticker.
Apparently, the campaign is "designed to be intriguing and fun to increase excitement around the KFC brand in Hong Kong" (and not to evoke head-scratching and disgust).
While they've shown off the nail polish on social media and at preview events, it doesn't look like they've started making it available to the regular public.
Image via KFC Hong Kong.