If you’re not going to eat it, put it on your face. That’s the message from cosmetic companies in the UK, where something very sweet is going on in the beauty aisles. From L’Oreal’s chocolate-flavoured lipsticks to Too Faced’s Triple Fudge and Champagne Truffle eyeshadow shades, make-up is increasingly packaged and sold to women as a sweet, indulgent and ultimately transgressive treat.