For the uninitiated: the ZIIP Halo uses low-level electrical currents (microcurrent and nanocurrent) to stimulate muscles in the face to contract and relax. Chevron Chevron Ziip ZIIP Halo Microcurrent Facial Device £380 ziip beauty Why it's Vogue-approved: ZIIP Halo is a microcurrent and nanocurrent device that A-listers, including Jennifer Aniston, Margot Robbie and Kim Kardashian, swear by. But the nanocurrent does have lasting effects: the lower current can activate skin cells to aid collagen production and thus, regeneration, improving the appearance of your skin after consistent usage.