Mirror, mirror

“Knowing your undertone is enormously helpful when you’re trying to figure out which lipsticks look best on you,” says Marie Mckeever, head of training at Clarins. A quick way to identify your skin’s undertone is to look at the veins on your wrist—if they’re blue, you’ve got pink undertones. If veins appear greener, you have yellow undertones. And if they appear both blue and green, you’re the lucky owner of a neutral tone and can carry any colour.

Mckeever advises that those with yellow undertones should stick to shades of red and orange, while those with pink undertones should opt for lipsticks with blue or purple in them. If you’re still not sure, check whether gold or silver jewellery looks better against your skin; gold will look great on pink skin, while silver will enhance yellow skin.