Put to the test with the strictest standards these products reined supreme in Vitamin K skin care products. Vitamin K minimizes or reduces bruising and skin discoloration by strengthening the capillary walls in the skin. Vitamin K is commonly used in face cream and more specifically in under eye cream. What many people do not know is that Vitamin k is also the most effective vitamin that treats spider veins. Remove unwanted effects of broken down capillaries with the use of these vitamin k products.