I had to sign a form at my therapist to cover her when she does electrolysis. Also, my mother is a nurse who has done a reflexology course (medicinal foot massage) and she says she won't do pregnant women because there is an area on the foot that if you stimulate too much it can lead to miscarriage :shock: .... sounds weird.... but who am I to know? I'd avoid overexposure to chemicals too, but dying your hair once or twice isn't going to be overly risky I don't think (compared to breathing inner city air anyhow!)