Letters to the Editor: Char-Free Dermabrasion Technique and Hair Transplantation Controversy

The document includes a letter from Isaac Kaplan, M.D., describing a "char-free" dermabrasion technique using a CO₂ laser and a waveguide for treating acne scars and wrinkles, which avoids the need for expensive equipment. Kaplan outlines the procedure and factors affecting the depth of dermabrasion, such as power, spot size, and scanning speed. He also provides post-treatment care instructions and presents before-and-after treatment figures. Additionally, the document contains correspondence between Dr. Manfred Lucas and the editor, where Lucas accuses Dr. Malte M. Villnow of falsely claiming in the journal and a textbook that hair transplantation results were achieved with a single laser session, when in fact multiple sessions and different methods were used. Villnow responds, admitting to an organizational error in photo selection for publication and assures precautions to prevent future mistakes, while promoting the laser-assisted hair transplantation technique.