James V. Gruber, Ph.D., Lisa Bouldin, Suzanne Wilford, Robert Holtz, M.S. – Arch Personal Care Products, USA
It is well established that human skin, which comprises about 70 microns of the outer protective cover for humans, is the principal barrier against the body’s dehydration. Within the confines of the stratum corneum, epidermis and dermis lies a water gradient that is low at the surface of the skin and increases quickly as one probes deeper into the skin.1
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