Effectiveness of a rhGM-CSF-containing Gel on Promoting Recovery After 1927-nm Fractional Thulium Fiber Laser Treatment of Atrophic Acne Scars.

Inclusion Criteria: * Patients diagnosed with atrophic acne scars with essentially symmetric bilateral facial lesion areas, and a Global Scarring Severity (GSS) scale score of Grade 2 or 3 (qualitative assessment); * Patients with normal cognitive function and mental status; * Patients with adequate communication ability; * Patients who voluntarily participate in the split-face controlled study and provide written informed consent. Exclusion Criteria: * Having received systemic medications, dermabrasion, or laser therapy within the past 3 months; * Females who are pregnant, lactating, or planning to become pregnant; * Presence of severe systemic diseases; * Psychiatric disorders or impaired capacity for self-care; * Photosensitivity or having taken photosensitizing medications within the past month; * Atopic diathesis or history of severe allergic reactions; * History of skin exposure to intense sunlight within the past month; * History of keloid formation; * Presence of active skin tumors or infections; * Subjects allergic to rhGM-CSF gel or similar products; * Other subjects deemed ineligible for the study.