Marquardt Phi Mask: What It Is, How It Works, and Why Experts Question It
Quick Answer: The Marquardt Phi Mask is a facial template built from the golden ratio (1.618), created by Dr. Stephen Marquardt to model an “ideal” face — but peer-reviewed research finds it best matches masculinized white fashion models, not a universal beauty standard. Who this guide is for: If you’ve landed on this page after … Read more