Like many domestic creatures, ferrets shed. They have two coats: an undercoat of soft, very dense fur that insulates them, as well as a topcoat of longer, thicker guard hairs that repel dirt and keep the ferret essentially waterproof. If you blow on your ferret, you will notice that the dark guard hairs will part so that you can see those light furs underneath. Most ferrets are white or cream in the undercoat and have markings in their outer layer, which gives them their distinguishing features, such as being sable or having a mask.
The ferret's body is well-equipped to deal with shedding and in an ideal world, the hair will move through the digestive system smoothly. However, it's a good idea to use a supplement, such as our Ferret Lax Soft Chews or our Ferret Lax Gel.