hi. I have read your question and understand your concern. eczema is a chronic condition which remits and relapses on its own, so there are a lot of misconceptions surrounding it. when the eczema remits on its own, people tend to associate it with some home remedy they have recently tried. there are no well proven studies on efficacy of kerosene oil on eczema. in fact kerosene oil can lead to allergic/irritant contact dermatitis. so my advice is to stay away from kerosene oil. hydrocortisone is a very mild steroid, usually used for kids. I suggest you use a stronger steroid like betamethasone propionate ointment twice daily. hope this helps. for any further questions please get back to us. thanks.