Therapeutic Effect of Seawater Pearl Powder on UV-Induced Photoaging in Mouse Skin

Figure 7

Effect of SPP on protein expression of MMP-1 (a, b) and collagen I (a, c) of photoaging skin in mice after the experiment; each bar represents the mean value from three repetitions with standard error (SE); different letters represent significant differences between the two groups.

(a)

(b)

(c)