Hi Doc, I hv used everything for sensitive skin(roll on& underarm spray), but still am itchi, especially under the one armpit.Whenever I shave, its getting worse. A dark red mark appear under my arm, even if I spray my clothing before putting it on.The itchiness normally starts when the spray gets dry under my arm, very irritating and embarrassing when in a company.If I dont shave and spray then its fine until I start again, when at home I rather dont put something on and go wash regularly when sweaty, but what do I do when not at home?The red mark is only under the one arm, but the other arm is also very sensitive for most sprays.Please help, doc. thanks