The Influence of Polyquaternium-7 on Hair Properties

The study investigated the effects of UV-light at a wavelength of 254 nm and the application of Polyquaternium-7 on hair properties. Polyquaternium-7, a conditioning agent commonly used in cosmetics, was applied to hair, and its mechanical properties were assessed. Additionally, the hair surface was examined using an atomic force microscope. The research aimed to understand how these treatments influenced hair characteristics, although specific conclusions from the findings were not detailed in the summary provided.