Optical Coherence Tomography: Promising In Vivo Measurement of Hair Shaft Cross Section

The study demonstrated that Optical Coherence Tomography (OCT) was a promising noninvasive technique for in vivo measurement of hair shaft thickness, providing highly reproducible results comparable to traditional light microscopy methods. Conducted on 28 healthy volunteers, OCT allowed for the monitoring of hair morphology over time without the need to remove hair, making it a valuable tool for clinical diagnostics and the evaluation of treatments for hair disorders. The study highlighted OCT's potential for routine clinical practice and research, offering a significant advantage over invasive methods by enabling continuous observation of the same hair fibers.