You want to avoid any of the strong odor-producing vegetables and fruits. Brush your teeth and tongue. Many people forget to brush their tongue, which is the major cause of odor. Eating an apple will also clean particles of food, and drink water with lemon. You want to take vitamin K, break open the capsule, and rub it onto the spider vein.
Horsetail extract is also good.
Stay away from caffeine, too. Fiber is also beneficial to avoid spider veins. Again, drink lots of water. Your face doesn't get dirty just lying on the pillow. It might get oily, but that is normal.