Spider vein and bruise treatments and creams are not instant fixes. It takes the body time to absorb and begin properly decreasing the blood flow to the affected areas. Studies have shown that a cream with a minimum of a 1% concentration solution will help reduce the appearance of bruising and spider veins with extended, consistent use. Typically results require using a Vitamin K cream twice per day for at least two or three months. Results are expectedly a bit individual but the longer and more religiously the creams are used, the better the results.