<prompt> The epidermal turn over time is14 days28 days40 daysNone of the above  <response>: Epidermal turn over time or skin doubling time includes:- Transit time from basal layer to stratum corneum 14 days; transit through the stratum corneumdesquamation 14 days total 28 days from basal layer to desquamation. Ref:- Review of Dermatology by Alikhan; pg num:-2 