They do not like to be held. They are more prone to bite if they are startled or woken from a deep sleep, or if your hands smell like another animal or food. Handle your hamster gently. ... If your hamster cannot eat properly, or cannot close his mouth, take him to a veterinarian who will trim his teeth.
It's best to only hold your pet for one or two minutes before returning it to its cage.
So if that's the case, how long does it take for a hamster to get used to you? It will usually take a hamster anywhere from 5-6 days to a couple of weeks to get used to you. So you'll have to have some patience with them while they're getting comfortable with you.