"Neck skin is thinner and has fewer oil glands than the skin on your face," explains Katie Gray, global head facialist at Emma Hardie.
"As a result, the neck loses elasticity before other parts of your body."
Emma Hardie Lift & Sculpt Firming Neck Treatment, £65
"This serum offers a two-pronged attack patented Liftonin-Expert, made from the leaf sap of a South African plant, activates the production of collagen, while the rollerball applicator helps it penetrate and stimulates bodyflow. Double whammy."