Antiacne Effects of PVA/ZnO Composite Nanofibers Crosslinked by Citric Acid for Facial Sheet Masks

Figure 6

Antibacterial result of PVA nanofibers with different relative concentrations of ZnO nanoparticles: (a, e, i) 0%, (b, c, j) 1%, (c, g, k) 4%, and (d, h, l) 7% each against (a–d) E. coli, (e–h) S. aureus, and (i–l) C. acnes.