One year of talcum powder on the vulva of a baby girl usually does not cause vaginal cancer. The main ingredients in talcum powder or cornstarch are currently on the market. It is usually sterilized by radiation, and the impurities in it, such as asbestos and grit, need to be made in strict accordance with national standards. It is basically non-toxic and harmless to infants and young children. Normal daily use will not cause substantial harm. In addition, the cause of vaginal cancer is very complex. It may be related to viral infection and other factors. It has little to do with the use of talcum powder. And talcum powder is usually limited to vulvar rubbing, and rarely enters the inside of the vagina. It is important to note that when purchasing talcum powder, you need to buy qualified products from regular sources. Avoid purchasing three or no products that can harm children. And if itching, rashes and other allergies occur after applying talcum powder, you need to stop using it immediately and seek medical attention.