Is Corn Flakes good for Rabbits?

Cornflour can be used on a rabbit to stop a bleeding nail (if, for example, you accidentally cut the quick while trimming your rabbit's nails). Dab cornflour on the end of the nail and apply pressure until the bleeding stops. Styptic powder is the commercial product made for this use and is superior to cornflour because styptic powder has analgesic (pain-killing) properties.

Cornstarch (unscented baby cornstarch powder) can be used on a messy rabbit in a "dry bath" method. (Wet baths can be dangerous for rabbits and should only be attempted when absolutely necessary and under very safe conditions.) See the link below for details about the dry bath method.

Rabbits should not eat cornstarch or cornflour, as it can lead to digestive problems (and even death).