I don't think you will find pureology locally, but you can order from abroad if cost is not an issue. We have Pantene though. Cantu too, apparently, in hairdresser supply stores (those have the best professional products). But if you're cost-conscious, look at DM-drogeriemarkt or Rossmann, those are the 2 biggest drugstores - with quite a lot of physical locations, their own store-brand products, and also websites and online orders and everything.

For a better grasp on what might be easily available, look around on kremmania.hu - it's a review site, kinda died down a bit as a community in the last few years but still works as an archive.