The new cells born in the basal layer at the bottom of the epidermis take about 28 to 30 days to ascend to the stratum corneum. Eventually it flakes off in the form of aging substances.
This repetition is called "metabolism." It is known that this cycle slows down as we age, but when cells are reborn too quickly due to stress or damage, cells that are still growing can move up to the stratum corneum, causing problems lead to sensitive skin.
That's why Naris aims to provide healthy stratum corneum care, not just remove dead aging skin cells.