Literature reveals problems with contamination. Here is a procedure to use for bacteriological sampling.
D001431:Bacteriological Techniques; D003358:Cosmetics / Q000032:analysis*; D003428:Cross Infection / Q000517:prevention & control*; D003879:Dermatologic Agents / Q000032:analysis*; D006225:Hand / Q000382:microbiology; D006801:Humans
D003358:Cosmetics; D003879:Dermatologic Agents