What can I do about the prominent protruding vein running along my hairline? (Photo)

Hi, this has been something that's bothering me for quite some time. I like to have short haircuts that will leave my forehead exposed as I simply find them more comfortable. however, there is a very prominent, protruding vein right in the middle of my hairline which i have circled. if i relax my facial muscles (ie close my eyes or open them only slightly/squint) it disappears but when i open my eyes to their normal size they appear. What can I do about this??