GIF-based FACS guide with isolated action units (AUs), proper FACS nomenclature, & corresponding muscle labels

*See AU 11 & AU 23 for rare reference shots of nasolabial furrow deepener & lip tightener.

Eyebrow combination references HERE.

More upper face references HERE.

AU	Description	Facial Muscle(s)	Example GIFs
1	inner brow raiser	frontalis, pars medialis
2	outer brow raiser	frontalis, pars lateralis
4	brow lowerer	corrugator supercilii, depressor supercilii, depressor glabellae (aka procerus)
5	upper lid raiser	levator palpebrae superioris
6	cheek raiser	orbicularis oculi, pars orbitalis
7	lid tightener	orbicularis oculi, pars palpebralis
9	nose wrinkler	levator labii superioris, alaeque nasi
10	upper lip raiser	levator labii superioris, caput infraorbitalis
11	nasolabial furrow deepener	zygomaticus minor
12	lip corner puller	zygomaticus major
13	sharp lip puller	levator anguli oris (aka caninus)
14	dimpler	buccinator
15	lip corner depressor	depressor anguli oris (aka triangularis)
16	lower lip depressor	depressor labii inferioris
17	chin raiser	mentalis
18	lip pucker	incisivii labii superioris and incisivii labii inferioris
20	lip stretcher	risorius w/ platysma
22	funneler	orbicularis oris
23	lip tightener	orbicularis oris
24	lip presser	orbicularis oris
25	lips part	depressor labii inferioris or relaxation of mentalis, or orbicularis oris
26	jaw drop	masseter, relaxed temporalis and internal pterygoid relaxed
27	mouth stretch	pterygoids, digastric
28	lip suck	orbicularis oris
43	eyes closed	relaxation of levator palpebrae superioris; orbicularis oculi, pars palpebralis
45	blink	relaxation of levator -palpebrae superioris; orbicularis oculi, pars palpebralis
46	wink	relaxation of levator palpebrae superioris; orbicularis oculi, pars palpebralis

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