Q. I ran out of my usual deodorant, so in a pinch I sprayed my favorite perfume under my arms. Is that bad?
A. Possibly. Because underarms, especially in the summer, are more sensitive when susceptible to wetness from sweat, humidity, friction and heat. Your underarm skin could have a different reaction to a perfume you normally spray elsewhere like neck, hair and back of knees, so keep perfume away from delicate areas such as armpits and genital areas.