But Do Penises Have to Be Involved? In a word, nope. "There are a variety of skincare products that contain growth factors, some from botanical sources, and others from other areas like human foreskin. It's unclear which of these is actually the best, so we need to rely on published data showing clinical improvement," points out Zeichner. If you are going to go the EGF route (be it with said penis facial or another topical product), the best time to start using these ingredients is while you're young and your skin is still relatively healthy, he adds. So, think of them as more preventative than curative.
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