New foundation fads come and go but Vichy's Aera Teint Pure foundation is one we go back to time and time again. A fluid formula with minerals that allow the skin to breathe while protecting against pollution, it is paraben free with SPF 20 and the coverage lasts for up to 12 hours. It's so trustworthy we've proclaimed it a beauty must-have, and the best news? It's just €18 from Sam McCauley chemists and local pharmacies.