Histological and Immunohistochemical Evaluation of the Efficacy of a New Cosmetic Formulation in the Treatment of Skin Photoaging

Figure 3

Immunohistochemical staining with Ki67 proliferation marker, before (a) and after (b) treatment showing the improvement of the proliferation index (40x magnification) at the end of the study. Quantification of Ki67 positive cells showed a 73.2% increase after treatment compared to baseline () (c).

(a)

(b)

(c)