Space NK is still growing at pace. Last year, its earnings increased 34 percent to $265 million, powered by growth in its under-25 consumer cohort, the retailer’s fastest-growing demographic. Even with the return of Sephora in the U.K., and the growth of Boots, the domestic Walgreens-owned chain, which has also pivoted hard into beauty, Space NK has retained customers with its loyalty program and differentiated offer.