A. Kusumawardani, A. R. Paramitasari, S. R. Dewi, and A. I. Betaubun, “The application of liposomal azelaic acid, 4-n butyl resorcinol and retinol serum enhanced by microneedling for treatment of malar pattern melasma: A case series”, Dermatol Reports, vol. 11, no. s1, Mar. 2019.