① Talc powder can protect skin and mucous membrane. Due to its small particle size and large total area, talc powder can absorb a large number of chemical irritants or poisons. Therefore, when it is spread on the surface of inflamed or damaged tissues, talc powder can have a protective effect. When taken orally, talc powder can not only protect the inflamed gastrointestinal mucosa, but also prevent the absorption of poisons in the gastrointestinal tract. Talc is not completely harmless, in the abdomen, rectum, vagina can cause granuloma.

② The antibacterial effect of talc powder was determined by plate method. The medium containing 10% talc powder had inhibitory effect on typhoid bacillus and paratyphoid A. The paper method only had mild antibacterial effect on meningococci.