This simple LoRA produces unibrows on portrait faces. I couldn't find others that did it, so I trained (though with some really crusty training images).

Notes:

• Works better with Euler/Euler Ancestral scheduler;

• Higher weights alters the face;

  • The face might be preserved if using IPAdapter or Inpainting;

    • The Inpainting works better at lower denoise;

  • If the FaceID (IPAdapter) is too strong or is set to be totally linear for all steps, the LoRA might not have any effect since the face will override it.

    • Setting the FaceID to 'ease in-out' or similar helps;

• Mid values might alter the background if that isn't specified in the prompt;

• If the unibrow has too much contrast, refining with a lower weight or using another scheduler might mitigate it;

  • Adetailer/Face Detailer might also help getting better results;