The delicate skin on our neck and décolletage has fewer sebaceous glands than our face, and without these natural emollients the skin dries out more quickly, making it more vulnerable to daily harm from the sun, wind, cold, and pollution. We also have less collagen and elastin fibres, which are responsible for keeping the skin firm and flexible— as a result, lines, wrinkles, redness, and hyperpigmentation can appear sooner than on other areas of your body.