FACS Prompts You Need to Know When Using Image AI There is a system called the Facial Motion Coding System (FACS) that classifies facial movements based on facial appearance. It is said that FACS codes are recognized not only in videos but also in GPT Image 2.0 and nanobanana. Simply upload the original image and type "Change Expression FACS AU46" into the prompt, and the character in the original image will wink. Facial Movement Coding System (FACS) List Female Character Reference Grid 1. AU1 - Inner Brow Raiser 2. AU2 - Outer Brow Raiser 3. AU4 - Brow Lowerer 4. AU5 - Upper Lid Raiser 5. AU6 - Cheek Raiser 6. AU7 - Lid Tightener 7. AU9 - Nose Wrinkler 8. AU10 - Upper Lip Raiser 9. AU11 - Nasolabial Deepener 10. AU12 - Lip Corner Puller 11. AU13 - Sharp Lip Puller 12. AU14 - Dimpler 13. AU15 - Lip Corner Depressor 14. AU16 - Lower Lip Depressor 15. AU17 - Chin Raiser 16. AU18 - Lip Pucker 17. AU20 - Lip Stretcher 18. AU22 - Lip Funneler 19. AU23 - Lip Tightener 20. AU24 - Lip Pressor 21. AU25 - Lips Part 22. AU26 - Jaw Drop 23. AU27 - Mouth Stretch Opening) 24. AU28 - Lip Suck 25. AU41 - Lid Droop 26. AU42 - Slit Eyes 27. AU43 - Eyes Closed 28. AU44 - Squint 29. AU45 - Blink 30. AU46 - Wink 31. AU51 - Head Turn Left 32. AU52 - Head Turn Right 33. AU53 - Head Up 34. AU54 - Head Down 35. AU55 - Head Tilt Left 36. AU56 - Head Tilt Right 37. AU57 - Head Forward 38. AU58 - Head Back 39. AU61 - Eyes Turn Left 40. AU62 - Eyes Turn Right 41. AU63 - Eyes Up 42. AU64 - Eyes Down 43. AU71 - Brow Furrow 44. AU72 - Brow Bulge 45. AU81 - Chewing 46. AU82 - Nostril Dilator 47. AU83 - Nostril Compressor 48. AU84 - Tongue Up 49. AU85 - Tongue Out (Pushing out) Source