Table 2. Classification of Included Studies by Clinical Indication

First Author	Study Design	Clinical Application	Chief Complaint
Kim8) (2025)	Case report	Dermatologic disease	Post-surgical hypertrophic scar of the face (after traumatic laceration repair)
Rho9) (2018)	Case report	Dermatologic disease	Atrophic surgical scar of the forehead (post–full-thickness traumatic laceration repair)
Ahn10) (2021)	Case series	Dermatologic disease	Postoperative scars after costal cartilage harvest for revision septorhinoplasty (anterolateral chest wall)
Shin11) (2023)	Case report	Dermatologic disease	Chronic atrophic facial scar of the left periorbital area (post-traumatic laceration)
Jung12) (2023)	Case series	Dermatologic disease	Linear lichen planus pigmentosus (LPP) of the chin following Blaschko’s lines (facial distribution)
Wang13) (2023)	non-RCT	Cosmetic procedure	Adults aged 20–50 seeking improvement of facial skin appearance (cosmetic clinic patients)- Facial wrinkles and mild skin laxity- Post-acne scars- Enlarged facial pores- Melasma
Rho14) (2024)	Survey	Cosmetic procedure	Aesthetic facial rejuvenation concerns—fine lines, texture, dryness, enlarged pores, uneven tone; periorbital/perioral and neck lines (incl. crepey neck); pigment/vascular issues (melasma, erythema/rosacea); and post-acne scarring (boxcar/rolling/ice-pick)
Lee15) (2023)	Survey	Cosmetic procedure	Facial erythema in adults—arising from inflammatory facial dermatoses (rosacea/AD/acne/SD), repeated laser or microneedle RF procedures, and steroid overuse.