Scientia Sunshine & Sea Aqua Tanning Serum (£21) is pure holiday happiness in a bottle. Not only does it give you that post-holiday glow, but it also smells of total coconut heaven. It's slightly more watery in texture than other tan serums, which means it glides onto the skin super easily, and makes a little go a long way. The formula contains hyaluronic acid, shittake extract, prickly pear seed oil, and birch bark extract to give your skin a boost of hydration and antioxidant goodness while you tan. As the name suggests, it truly has the magic of sunshine and the sea in a bottle.