Fans of Geralt's adventures depicted in the books may find that The Witcher 3 Wild Hunt is lacking some content about the witchers. Of course, the issue doesn't concern the overall quality of visuals or mechanics used in the game - according to some, the monster slayers created by CD Projekt RED are simply too good-looking.
Lore-Friendly Witchers, a set of two modifications which change the appearance of witchers, comes to your aid. Let's start with the eyes, which now look more like eyes of a cat and shine in the dark (this applies to all the witchers we meet in the game). The main character has also received a neat face-lifting. Geralt's complexion has become paler - the color of his eyebrows and chin resembles the color of his hair.
Put the unpacked contents of downloaded archives in the "mods" folder located in the main folder of The Witcher 3 Wild Hunt.