I’m unable to find a verified or reputable paper titled in academic or medical literature. It’s possible the name is misspelled, highly niche, or refers to a non-scientific source (e.g., a fictional work, brand name, or informal case study).
: In a broader sense, if "Hellga Facial" refers to a type of facial expression, it could be used to describe a look that is often associated with frustration, disdain, or a mix of emotions, which seems to align with how Hellga is sometimes portrayed. hellga facial