It’s logical to assume that our locks provide the scalp with a layer of protection from the elements, but it’s far from the truth – beneath those 100,000-odd follicles hides a humid hothouse of microbial activity that is constantly being tested. Exposed to every kind of weather, under-washed, over-washed, bleached, coloured, and blasted with heat, dry shampoo and sticky hair products, the scalp ages up to six times faster than the skin on your face. But it’s tempting to ask yourself this: Given you mostly can’t see what lies beneath your locks, should
