Featuring Manucurist Rose Balm. It started with glass skin, seemingly poreless complexions that gleamed with a natural radiance. Then the trend moved on to glass hair, high-shine strands you could practically see your reflection in. Now, the look has made its way over to your fingertips with glass nails. And the fact that the mani was sparked by none other than Kate Middleton makes the glass nail takeover feel even more inevitable.