Nars Cosmetics Powermatte Lip Pigment (£23) is one of the easiest liquid lipsticks out there to apply. It doesn't set as quickly as some other liquid formulas, giving you time to carefully paint your lips with the pointed doe foot (allowing for superprecise application), and then clean up any smudges before it dries fully. When applied correctly (no lip balm underneath, two coats with the first layer blotted using tissue, and, for ultimate staying power, dusted with loose powder between the layers), the high-pigment formula does not budge, and the colour remains vibrant all day.