The growth time of a hamster's fur after molting varies depending on the situation:
Seasonal Molting
Summer and autumn are the seasons when hamsters molt. This kind of hair loss is caused by climate change and is a normal phenomenon. Usually, the fur will grow back in a short time. Generally, new fur can grow out in about half a month.
Elderly Hamsters
As hamsters age and enter their senior years, their fur becomes sparse and of poor quality, and new fur will not grow back. The hair loss in this case is irreversible.
Newborn Hamsters
Newborn hamsters start to grow fur at around one week after birth, and their fur is fully grown at around three weeks. This process is not only a physiological change but also a demonstration of vitality and adaptability.