The purpose of this series of guides is to introduce you to the features and mechanics of modules and crafting in Golem Overlord. This is the eleventh post of the series and shows how to use the elusive Yixn's Hair Forge Sigil.
If you are not familiar with the basics of modules, the Pyrite Forge, Forge Sigils, and crafting I recommend reading the previous posts in this series before reading this post.
The Golem Overlord Module Guide Curated Collection also has links to all related posts in this guide. You can view it as a curated collection or as a post. I will continue adding post links to the collection as they are completed.
Yixn's Hair is the rarest and most valuable Forge Sigil in Golem Overlord. It only drops in artifact rarity. As you can see from the 3/5 in the corner, there are only 5 in existence now.
The description in the middle "Duplicates a Module without the 'duplicated' tag" means that you use it to duplicate a module that has never been duplicated. Once a module is duplicated, both the original module and the newly created duplicate module have the "duplicated" tag added.
Yinx's Hair is used in the Pyrite Forge just like the other Forge Sigils.
After deciding on the module I want to duplicate, I've taken these steps to use Yixn's Hair:
This is the results screen after using Yixn's Hair.
Notice that both modules now have the "This Module was duplicated" symbol on the right side. Neither of these modules can be duplicated again using Yixn's Hair.

If you are lucky enough to get Yixn's Hair, you should not typically use it on an Omega Amplifier. The optimal use is to duplicate a Quantum Amplifier which are the best amplifiers in the game. Depending on the stats of course.
In the next post, Golem Overlord Module Guide: Nullification Crystals, I show how to use Nullification Crystals combined with an Apex Mark and Smelter's Trinity.
Please leave feedback on this post in the comments or the Golem Overlord Discord. I'll do my best to keep it updated as a reference for players.
Golem Overlord player made this YouTube tutorial: Modules, Forge Sigils and Nano Tonics. You may find it helpful so I wanted to include the link here.