HPMC/PVP dissolving microneedles: a promising delivery platform to promote trans-epidermal delivery of alpha-arbutin for skin lightening - Aung, N N; Ngawhirunpat, T; Rojanarata, T; Patrojanasophon, P; Opanasopit, P; Pamornpathomkul, B (AAPS PharmSciTech, 2019)