It is not recommended to use expired rice flour on face. Using expired rice flour on your face can lead to both skin and health complications
Expired rice flour becomes rancid and can cause skin reactions such as pimples on the face. That is to say; expired rice flour if applied on your face overnight, can increase the risk of skin irritation.
Expired rice flour produces a bad smell.
Applying expired rice flour on face can cause digestive discomfort.
Expired rice flour if applied on the face can cause allergies.
Conclusion, you should destroy the expired rice flour to avoid using it on your face.