How I test beauty products: Mayola Fernandes testing the Medicube Deep Vita C Capsule Cream. That means I – along with my fellow editors and a carefully-selected team of freelance beauty journalists – take every product home and put it through its paces as part of their everyday routines, rather than testing it in a studio, on set or in a lab. I've been a shopping writer for five years now – three at Glamour and two writing across Cosmopolitan, ELLE and Harper's Bazaar – and in that time, I've covered more Amazon beauty sales than I can count.