Lip fillers of two types:

"full_lips" = Thick lips with an even thickness, ignoring the cupid's bow
"defined_lips" = Thick lips with a pronounced cupid's bow and more defined shape

Different sizes: "huge_lips" , "big_lips" , "small_lips"

(it helps to also use the opposite ones in the negative)

Other tags:
"closed mouth"

"parted lips"

"visible teeth"

"open mouth"

"wide open mouth"

"pursed lips"

"pouty lips" = with "full_lips" and "huge_lips" this should create that typical donut shape of very big lips

"natural lips" = no lipstick

"glossy lips" = can be with color, but appears common in the dataset without any color