The present invention relates to inhibiting the activity of non-genotype 1 hepatitis C virus NS3-NS4A protease activity. The invention demonstrates that certain plant fractions, such as the serum fractions of Camellia sinensis, Citrus limon, and Trifolium pratense, can be effectively utilized in various products to inhibit inflammation of biological tissue, including but not limited to skin. An example apparatus includes a leakage detection circuit configured to be coupled to a capacitance block.