Dr. Sydney Z. Spiesel is a pediatrician specializing in adolescent medicine on the clinical faculty of the Yale University School of Medicine

Yale School of Medicine

The Yale School of Medicine at Yale University is a private medical school located in New Haven, Connecticut, U.S. It was founded in 1810 as The Medical Institution of Yale College, and formally opened its doors in 1813....

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Spiesel is the inventor of a shampoo that makes lice

Louse

Lice is the common name for over 3,000 species of wingless insects of the order Phthiraptera; three of which are classified as human disease agents...

 eggs (nits) fluoresce under ultraviolet light, so making them more visible.

Spiesel is a regular commentator for Slate magazine and National Public Radio.