PCA Skin Rejuvenating SerumPCA Skin Rejuvenating Serum minimizes the appearance of fine lines with a potent epidermal growth factor. The epidermal growth factor signals skin cells to multiply, thereby fortifying your complexion and decreasing the depth of lines. Antioxidants and calming bisabolol leave your skin looking even and glowing while vitamin E protects your delicate texture by neutralizing age causing free radicals.