Skin cycling is the new, four-day routine that allows you to introduce active ingredients without causing irritation. Keen to try it yourself? From what goes where to why you should focus on your skin barrier last, watch on for all the tips and products you need to give this a go on this week’s #BeautyInsider with @adeolagboyega 2% BHA Liquid Exfoliant, @paulaschoice Radiance Repair Retinol Serum, @eve_lom HydraKate Recharging Serum, @katesomervilleskincare HydraKate Recharging Water Cream, @katesomervilleskincare