<human>: Is it okay to use a hair dryer to dry your hair when it's raining outside?
<bot>: Yes, it is okay to use a hair dryer to dry your hair when it's raining outside. Hair dryers are designed to be used indoors and can safely dry wet hair in the presence of water. The heat from the hair dryer will not create additional moisture on your hair, so there should be no risk of damage or mold growth.