Research Article

A Novel Biocompatible Herbal Extract-Loaded Hydrogel for Acne Treatment and Repair

Figure 4

The morphology of the hydrogel (10 : 1), which comprised 9% () herbal gelatin mixed with 10% () alcohol herbal extract CMC solution: (a) microscopic images of the hydrogel and (b) the freeze-dried sample. The morphology of the hydrogel (10 : 1): (c) the cross-sectional interface and (d) the surface structure scanned by SEM.
(a)
(b)
(c)
(d)