The honey that Guerlain uses in its Abeille Royle range of skin-care products is made in hives on a tiny little island called Ouessant off the coast of Brittany — a UNESCO biosphere reserve that's free from pesticides and parasites. You'll find this honey — as well as a new proprietary ingredient complex the brand calls its BlackBee Eye Repair Technology — in the new Guerlain Abeille Royale Eye Repair Serum (£90). Add two "tensing polymers" into the mix and you have a silky serum that promises to repair, firm, and smooth the delicate skin around the eyes.