Summer loves duos – including cosmetic ones. The aim of a well-chosen skincare routine is now to moisturise, soothe, protect and ensure the skin feels comfortable. Cosmetologists point out that one of the top solutions that should find a place in your make-up bag for a summer holiday is the combination of a perfectly matched serum and a refreshing, light hydrosol. How do you choose products that will keep your skin looking stunning all season long?