A couple of days ago I started to grow my beard again after many years without one. Because it was coming in greyer than I liked, I tried a Just For Men beard dye, which I'd used in the past. My face got unbearably itchy and I shaved it off. Over 48 hours later, however, and my face is swollen, the skin is weeping, and there's a rash. It's so itchy it's driving me crazy. Any thoughts on how to make this go away?