Custom content hair is grainy

It's not a broken mod or something you can remove from the mods folder to fix. The creator of the CC needs to update the CC and then the CC needs to be deleted and replaced. 

This is rather difficult to fix due to the fact that most mod/cc users have thousands of CC in their mod folder and this means tons of hairstyles. Finding the name of the hairs that are broken is a brutal task alone because when they are in our game they don't come listed by creator or name, they just show up. Sometimes there is a tag on the thumbnail for the creator, but still. This means having to recognize and remember the hair styles that are broken and checking if the creator updated it, if you use thesimsresource and have VIP you have a TSR manager to install and sometimes update the CC, which still may mean finding the hairstyle name in your mods folder, deleting it, reinstalling it. But this means remembering that the hairstyle is broken in the first place. Removing the mods folder isn't going to help. 

What i usually do to identify cc is using Sims 4 Tray Importer. You can create a "test" family, give them the cc (clothes, hair, makeup or whatever), and the save the family. Open sims 4 tray importer, select the saved family, and it will list all the cc equiped, with a preview, where it is located in your mods folder etc... Very handy. I hope it helps 🙂