As you’ll know by now, Camilla and I are participating in the 28-day Change Your Skin challenge with Kiehl’s by trialling their Midnight Recovery Concentrate for a month. It has forced me to be much more disciplined about my routine so that the results of the challenge aren’t skewed by all the different products I use, something that’s very difficult for a product junkie like me. I usually work in a three day cycle with my nighttime skincare, alternating moisturiser (at the moment I’m using Mama Mio Mighty Moisture), Alpha-H Liquid Gold and a beauty oil. Obviously I’ve now cut…