"Here's Your Breakdown on the 7 Days of the Month Your Skin Looks Best
Estrogen has a powerful effect on all types of cells that make connective tissue elements such as collagen, elastin, and hyaluronic acid. When estrogen peaks during the days right after a woman's period, the cells in skin are stimulated to make more of these elements, resulting in a clear glowing complexion. Well, Dr. Booth's actually developed a skin-care line called VENeffect, which seeks to utilize the powers of plant estrogens, known as phytoestrogens, to mimic what estrogen does for the skin."