Patent ID: 7954392

Claim:
A method of evaluating the interaction of at least one consumer product with mammalian keratinous tissue, comprising the steps of: (1) topically applying at least one said consumer product to a coated surface of an article of manufacture comprising: a) a substrate comprising a polymer; b) a coating layer comprising a plasma-deposited coating material selected from the group consisting of allyl amine, allyl alcohol, 1,1,1-trimethyl-1-pentene, 2,4,4-trimethyl- 1-pentene, perfluoromethylcyclohexane monomer, and combinations thereof, wherein: i) said coating layer is stably affixed to said substrate to form a stable, coated surface, wherein said coated surface has a texture that mimics the topography of mammalian keratinous tissue; and ii) said coated surface demonstrates at least one physical property representative of mammalian keratinous tissue, selected from the group consisting of a total surface energy of from about 15 mJ/m 2 to about 50 mJ/m 2 , a dispersive component of the surface energy of from about 15 mJ/m 2 to about 50 mJ/m 2 , a polar component of the total surface energy of from about 1 mJ/m 2 to about 14 mJ/m 2 , a zeta-potential at a pH of about 5.0 of from about −40 mV to about 30 mV, and combinations thereof; and (2) measuring the interaction of said consumer product with said coated surface.