How does a thick corneum layer appear under a Wood's lamp?

A thick corneum layer appears under a Wood's lamp as white fluorescence. This effect is due to the keratin content in the thickened skin, which can fluoresce under the ultraviolet light emitted by the Wood's lamp. The fluorescence indicates the presence of healthy skin tissue and provides important visual feedback during skin assessments.

The white fluorescence serves as a diagnostic tool in esthetics, helping practitioners identify skin conditions. A healthy corneum layer should exhibit this characteristic glow, differentiating it from other skin types or conditions that might not fluoresce similarly. This visual cue is essential for determining the appropriate treatment or product selection for clients.

In contrast, other options might represent different skin conditions or features that do not relate specifically to a thick corneum layer under a Wood's lamp, emphasizing the importance of recognizing the signs of skin health accurately.