We don't have charcoal soap, but my daughter uses a charcoal face mask and it works well for her. She has sensitive skin as well. She can't use products with chamomile in them. Neither can I for that matter.

I have rosacea and my dermatologist thinks it's an overpopulation of demodex, a mite. She tried a cream but it irritated my face, so I took some pills. It's looking better, but there's still some redness near my cheek bones. I also did a patch test of chemicals and found I was allergic to certain chemicals. I bought new shampoo and conditioner today and will see if it doesn't cause me a rash on my forehead.