About Sam Sam Rowan is a skincare enthusiast and writer who uses at-home skincare devices and explains high frequency wands in plain English. Sam reads dermatology research and device manuals so readers can understand what these wands may and may not do. Sam is not a doctor, dermatologist, nurse or esthetician, and is not a medical professional. Why I write about high frequency wands High frequency wands get a lot of attention on social media and shopping sites, often with big promises attached. Calm, plain guidance on how they work, who should avoid them and what to expect is much harder to find. I write here to help fill that gap. I focus on three things. Safety comes first: who should not use a wand, and how to use one carefully if it suits you. Next comes realistic expectations. Evidence for at-home high frequency is limited, so I keep what brands say separate from what published research shows. Last is practical how-to: settings, electrodes, cleaning, and what to do when a unit seems faulty. To check facts, I rely on the American Academy of Dermatology, DermNet, peer-reviewed papers on PubMed, and the manuals for the devices I write about. Session lengths and settings come from those manuals, not guesswork. Every article also gets a human edit before it is published. About the name Sam Rowan is a pen name. The guides are written by the person described on this page, who uses a pen name to keep their personal life separate from the site. Topics Sam covers - High frequency basics and safety - How to use a wand at home - Realistic expectations for skin concerns - Buying guides Not medical advice Articles on High Frequency Facial are educational and are not medical advice. You can read more in our medical disclaimer. If you have ongoing acne, rosacea or other skin concerns, please see a board-certified dermatologist. Questions Have a question, or spotted something that needs correcting? Get in touch through our contact page. This page is for general educational purposes and is not medical advice. Read our Medical Disclaimer.