Product Full Description - Unescaped in HTML


how can I change the {$product.full_description|unescape} in HTML on this file:


The Problem:

I add events and select the product in storefront, but its not showing me any kind of styles which I made with the HTML editor in the backend.

I am getting the same result with the {$product.short_description}.

Is there a way to call the descr. directly like on the Product templates {$prod_descr}?