The fasting Person bathing a lot
Question :
What is the ruling on bathing during the daytime in Ramadhan more than once or sitting by the air conditioner during the entire time (of fasting) while this air conditioner puts out some moisture?
Answer:
Verily, this is permissible and there is no harm in it. Indeed the Messenger used to pour water over his head due to the heat or thirst while he was fasting. Ibn 'Umar used to wet his garment with water to lessen the intensity of the heat or thirst while he was fasting. Also, moisture does not have an effect on the fast because it is not water that reaches the stomach.
Source:
Ash-Shaykh Ibn 'Uthaimin
Fatawa Islamiyah, Vol. 3 Page 269