| abstract |
A process for identifying presence of an organic material, which is an organic material selected from lipids, carbohydrates, proteins, peptides, vitamins, organic sunscreens and mixtures thereof, in a surfactant-containing medium which contains at least 1 % by weight surfactant, which biological assay comprises enzymes or immunological agents, wherein the medium contains surfactant in a liquid or dissolved form and is a cosmetic cleanser. |