Broken or dilated capillaries occur when the valves inside the veins become weakened or damaged, causing blood to pool within the vein. When this blood has nowhere else to go, it begins to branch out, leading to visible red lines.
Risk factors that increase the chances of experiencing broken or dilated capillaries include:
- Genetics
- Age
- Pregnancy
- Being overweight
- Hormones
- Sun damage
Excess facial pressure

