A significant percentage of adults experience broken vessels or facial veins, which are small, dilated blood vessels visible near the skin’s surface. These veins, often appearing as thin red, blue, or purple lines, are primarily caused by genetics, sun exposure, aging, and lifestyle factors like alcohol consumption and smoking. Conditions that increase pressure on veins, such as rosacea or hormonal changes, can also contribute. Individuals with fair or thin skin are more susceptible due to the lack of coverage over underlying blood vessels.