Made this to try and teach photoreal-focused models how to do more expressive human faces, and I'm shocked how well it worked.

Use the trigger phrase "exp_real," and one or more of the following: happy, unhappy, angry, worried, shocked, surprised. You can get some surprising nuance by prompting multiple conflicting emotions, e.g. "happy, unhappy,"

Low weights are a good start but you can get stronger effects with higher weight, 1.0 is often viable. Main side effects appear to be a bias towards brightly lit environments and younger faces.

Full disclosure: This lora was initially intended to be for specific lewd scenarios. It doesn't seem to significantly boost the odds of getting nsfw output, but if you're using nsfw prompts their effects might also be altered (for good or for ill). The training dataset was also completely female; testing indicates it does well for men in many cases, though for "surprised" and "shocked" higher weights may add makeup.