La belleza española es el secreto!

Intensive Tolerance Booster by Natura Bisse. I've been using this serum for a few months now and I have to say it really does work. It is from a Spanish company based in Barcelona (my fave city!) and is well regarded on the professional beauty circuit. It is particularly good at soothing and renewing sensitive skin and I personally have found it very helpful in the winter to summer transition. Pricey but it does get results. Use it sparingly before your moisturiser and it should last you most of the year. Buy it online from Selfridges or Space NK.
http://www.selfridges.com/en/Beauty/Intensive-Tolerance-Booster_467-3001963-31D338/