Hi. Eyelashes are a part of the head (they are just hidden within the head) and this mod is just a head replacer.
- in s4s main menu choose Overwrite, then click CAS;
- filter the result by « Head », find the one for the frame you want, Next, name it something;
- in Mesh tab click on Export, open this blend file;
- in 3d view select the head, switch to edit mode (TAB);
- in uv editor select everything with A, in the drop-down menu choose the skin texture to get a better idea of where eyelashes are;
- enable sync, press B, click and drag to select the uvs of the eyelashes (they are under the eye uvs);
- in 3d view press Delete, choose Faces;
- select everything with A, Remove doubles with Merge distance set to 0,0001;
- save, import back into s4s;
-Shift Ctrl C to open a console, type in « headfixer », press Enter. Save, check in-game