I think I have seen American-brand dryer sheets and soap on this site before: http://www.afoodave.ch/index.php?p=home
You won't find anything like Dial or Irish Springs here, I think. Body Shop has a nice mild one I use. Manufactum also has some cool stuff: http://www.manufactum.ch/Kategorie/1...autpflege.html
If he wants something more like a deodorant, why not go to a cosmetics counter where they sell nice mens stuff like Clarins and ask if they have perfumed soap.