I've been using minoxidil (rogaine) [and propecia] for about 2 months. I'm using a liquid spray. But I have quite sensitive skin and my scalp has got ridiculously itchy. I find it hard not to scratch and although I've noticed the hair thicken I think I've made it worse by scratching than the Rogaine actually helps! Does anyone have any tips how to stop the itching, or if there is a better formulation to be using?