I think...I think it may be from the Hard shampoo. I took a section of it, the Recincarnate solid shampoo, and Jungle solid conditioner to our friend's house last night for them to try...and so I smelled them all while I was sharing and explaining them. By the end of the night my head hurt. The Hard shampoo bar has rose petals in it so I am almost certain that is what gave the headache to me last night and the day I got the stuff. Still, I think I shouls at least try the shampoo bar and see what happens.