thin line at the top of the forehead hairline is often curved slightly or straight can be high or low on the forehead can be light or dark in color can be thick or thin may be receding (moving back from forehead) or stable.
hairline which has thin line at the top of the forehead hairline which has hairline is often curved slightly or straight hairline which can be high or low on the forehead hairline which can be light or dark in color hairline which can be thick or thin hairline which may be receding (moving back from forehead) or stable.