Probably not a big help, but you can get this in Scandinavian countries too.

I do buy things from German websites pretty frequently (I get Geldifa yarn for about half the price it is here). If you find the shampoo on a site and they don't have shipping info to the US on the website, write them and ask if they'll ship. ebay.de often can be a source for things like this too.

L'oreal was one of the sponsors of Zach's event in New York weekend before last and we met the US president or L'oreal. If I'd known then I could have asked about other sources for this.