prompt: Why does the sun make our hair lighter but make our skin darker?
chosen: Why does the sun make our hair lighter but make our skin darker?
chosen: user
chosen: The sun makes our hair lighter because when ultraviolet radiation from the sun passes through our hair, it bleaches the pigment in the hair strands that give the hair its colour. Our skin darkens because UV radiation from the sun damages the skin cells, causing them to create more pigment to protect the cells from the damaging rays. This results in a tanning or darkening effect on the skin.
chosen: assistant
rejected: Why does the sun make our hair lighter but make our skin darker?
rejected: user
rejected: assistant