Antiacne Gel Containing Aloe vera and Clindamycin Phosphate: Design, Characterization, and Optimization Using Response Surface Methodology

Figure 4

Illustrating FTIR of (a) HPMC K15M, (b) clindamycin phosphate, (c) Aloe vera, and (d) topical gel formulation.

(a)

(b)

(c)

(d)