Not washing one's hair for ghusal due to health reasons
Q: I live in America and it’s winter now and very cold.
My question is after marital relations with husband at night, is it permissible to wash my whole body but not my hair and do tayaamum for the hair? I have very thick hair and I can’t dry my hair fully even with hair dryer. I get a cold at night after washing hair. Can you please advise?