In Germany it has been banned since 2006 due to the new Telemedia Act, posting Hair Transplant Before and After Pictures
In many other countries, however, this is allowed. Consider, then, that before and after photos do not mean to foreign websites that they have, in contrast to German suppliers to produce results. Also keep in mind that those before-and-after photos always show the best results, with patients who had optimal conditions. The normal case you are looking at such pictures vain.
However, the German legislation allows the showing of results in person.