pak-ex is a special skin cleaning product for use after contamination by PAH (polycyclic aromatic hydrocarbons). PAH are formed particularly during incomplete combustion and can only be insufficiently removed with conventional products. The effective cleaning by pak-ex prevents the uptake of PAH through the skin or later oral uptake due to contamination spreading. pak-ex removes more than 96% of PAH. The skin-friendly formula is free of soap and penetration enhancers to avoid compromising the barrier properties of the skin.