I wrote this ONLY review years ago about this "orphan drug" that disappeared years ago. NO response. Will there EVER be a group somewhere that will rediscover this?? SCADAN was, for many people, the only thing that ever really worked to remove scalp itch. It was also great for grooming -- in fact, it was the best product ever for that also. Unfortunately it vanished years ago and has not been available since. I've tried over a dozen products since then without finding anything nearly as good just for grooming. As an over-the-counter item, Scadan wasn't exactly an "orphan drug" -- If some smart entrepreneur could pick up the recipe (or purchase it from Miles Pharmaceuticals, West Haven CT), even without active ingredients, it could sell like wildfire for grooming. Possibly the active ingredients could be added later: 1% myristyl/trimethyl/ammonium bromide O.1% stearyl dimethyl benzyl ammonium chloride Miles Pharmaceuticals later became part of a larger corporation but there were divisions where someone may conceivably know something about SCADAN - even after all these years.