I started usuing Minoxidil 5% and Hair signals Serum and Cream every other day along with the emu oil. So around day 3 my scalp began to itch and is becoming bothersome and sore. Could I be having an allergic reaction? I've used Minoxidil before, but it was only 2%. Any insight would be greatly appreciated.

Probably not an allergy but just use much less of everything.