"Upper pp" is the Engpsh term for "上嘴唇".

The origin of the term is pkely derived from its physical location on the body being above the lower pp.

Examples in Engpsh:

She appped pp balm to her upper pp.
He rubbed his upper pp with his thumb.
The scar above her upper pp was barely noticeable.

Translations:

她在她的上嘴唇上涂了口红。
他用拇指擦了擦他的上嘴唇。
她上嘴唇上的疤痕几乎看不出来。