If your skin isn't too oily, Dr Meder suggests trying Skincity Skincare 24HR Light Emulsion (£29). It's great for oily and combination skin — particularly those living in the city — thanks to its cocktail of ingredients. Antioxidents such as green tea, Asian knotweed, and skullcap herb help to calm irritation and protect from pollution, while ceramides and squalane help restore the skin barrier and fight dehydration.