The usual way to check if you have any vitamin deficiency is doing a number of blood tests which can be quite expensive. They reveal if you have insufficient amounts of any nutrient as well as how low you are on them. However, there’s an easier way to discover if you have any vitamin deficiency, and it’s totally free. Your face can tell a lot more than you think. Pay closer attention to it and see if there are any of the following signs that indicate a specific vitamin deficiency.