How long after birth can a kitten be bathed?

Kittens should not be bathed until they are at least 3 months old, because they only complete their first vaccination round at around 3 months of age. Before a kitten is fully vaccinated, bathing is not recommended since its immune defenses are still weak, and a bath can further lower resistance and trigger illness. For the kitten’s health, it is best to wait until it has finished its vaccinations and passed an antibody test before giving it a bath.