SOURCES:

Diane Madfes, MD, clinical instructor, dermatology, Mt. Sinai School of Medicine.

WebMD Feature: "Natural Skin Care Treatments."

WebMD Weight Loss Clinic Feature: "The Antiaging Diet."

WebMD Medical Reference provided in collaboration with the Cleveland Clinic: "Cosmetic Procedures: Choosing Skin Care Products."

The Dermadoctor Skinstruction Manual, Audrey Kunin, MD, Simon & Schuster, 2005.

Mayo Clinic website: "Wrinkles."

PDRHealth, "Biotin."

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