Table 3.

Characteristics of Excluded Studies

Authors (Year)	Reason for Exclusion
Takenouchi K, Aso K (1964)23	Animal study
Yussif NM, Koranayb NS, Abbass MMS (2017)24	Animal study
Matsuda S, Shibayama H, Hisama M, Ohtsuki M, Iwaki M (2008)25	In-vitrostudy
Panich U, Tangsupaanan V, Onkoksoong T, Kongtaphan K, Kasetsinsombat K, Akarasereenont P et al(2011)11	In-vitrostudy
Lee SA, Son YO, Kook SH, Choi KC, Lee JC. (2011) 26	In-vitrostudy
Taira N, Katsuyama Y, Yoshioka M, Okano Y, Masaki H (2017) 27	In-vitrostudy
Katsuyama Y, Taira N, Yoshioka M, Okano Y, Masaki H (2018) 28	In-vitrostudy
Taira N, Katsuyama Y, Yoshioka M, Okano Y, Morikawa T (2018)29	In-vitrostudy
Yim S, Lee J, Jo H, Scholten J, Willingham R, Nicoll J, Baswan SM (2019) 30	In-vitrostudy
Miao F, Su MY, Jiang S, Luo LF, Shi Y, Lei TC (2019) 31	In-vitrostudy
Lee (2008) 32	Case report
Sheel V, Purwar P, Dixit J. and Rai P (2015) 33	Case report
Postaire E, Jungmann H, Bejot M, Heinrich U, Tronnier H. (1997) 34	Used along with other agents
Broekmans WM, Vink AA, Boelsma E, Klöpping-Ketelaars WA, Tijburg LB, van’t Veer P, van Poppel G, Kardinaal AF. (2003) 35	Used along with other agents
Hwang SW, Oh DJ, Lee D, Kim JW, Park SW (2009) 36	Used along with other agent
Dormael RD, Bastien P, Sextius P, Gueniche A, Ye D, Tran C, et al(2019) 37	Used along with other agent
Ishikawa Y, Niwano T, Hirano S, Numano K, Takasima K, Imokawa G (2019) 38	Used along with other agents
Kim J, Kim J, Lee YI, Almurayshid A, Jung JY, Lee JH. (2020) 39	Used along with other agents
Rattanawiwatpong P, Wanitphakdeedecha R, Bumrungpert A, Maiprasert M (2020)40	Used along with other agents
Huh CH, Seo KI, Park JY, Lim JG, Eun HC, Park KC (2003) 41	Used in conjunction with Iontophoresis
Shaikh I, Mashood AA (2014) 42	Used in conjunction with fluorescent pulsed light (FLP)
Yun IS, Yoo HS, Kim YO, Rah DK (2013) 43	Used for scar reduction
Amirlak B, Mahedia M, Shah N (2016)44	Used for scar reduction