Application Effect of Poly-L-Lactic Acid Based on Vector Injection Technology on Improving Facial Relaxation
XING Zhihua
CHEN Ran
ZHANG Lingxiu
WANG Ke
Abstract：Objective To observe the clinical application effect of a mechanic-based poly-L-lactic acid vector injection technique on improving facial relaxation.Methods Sixty patients with facial relaxation admitted to the Department of Cosmetic Dermatology,Nanjing Medical University Friendship Plastic Surgery Hospital were selected as research subjects.They were randomly divided into the observation group and control group,with 30 cases in each group.Patients in both groups were treated with poly-L-lactic acid injections to improve facial relaxation.Patients in the observation group received injections based on vector injection technology,while those in the control group received traditional injections.After 3 courses of treatment,treatment effects of the two groups were compared.Results The overall improvement rate of cosmetic effects was 100%in the observation group and 93.33%in the control group.There were no significant differences between the two groups in the overall improvement rate and incidence of adverse reactions(all P>0.05).The dosage of poly-L-lactic acid suspension in the observation group was significantly lower than that in the control group(4.2±0.5 mL vs 6.8±1.2 mL,P<0.05).The observation group performed better in the Wrinkle Severity Rating Scale(WSRS)scores,Global Aesthetic Improvement Scale(GAIS)scores,and multiple items in the Facial Assessment and Cosmetic Enhancement Quality of Life Questionnaire(FACE-Q)scores(P<0.05).There were no significant differences between the two groups in the impact on life,satisfaction with social function,and psychological impact(all P>0.05).Conclusion The mechanics-based poly-L-lactic acid vector injection technology can reduce drug dosage and more significantly improve scores related to facial relaxation,while ensuring therapeutic efficacy and safety,thus possessing good clinical application value.
Keywords：poly-L-lactic acidskin laxityagingbeauty technology
Publication Date：2026-02-10
Online Publishing Date：2026-03-17(First online date of this platform, not the publication date of the document)
Pages：6( 24-29 )