Efficiency of a continuous height distribution model of sunscreen film geometry to predict a realistic sun protection factor

摘要

Numerous attempts have been made to understand how sunscreen preparations protect against IIV radiation.In previous publications the authors used the simple step film geometry proposed by O'Neill to successfully calculate UV curves similar in shape and intensity to in vitro experimental ones.That data was collected by spreading different sunscreen formulations onto the well-known irregular transparent substrate Transpore tape(3M Corporation).Work by others used the same simplistic model of sunscreen film geometry.