Vitamin C may be able to lighten hair color, but it is not a reliable method for removing hair dye or getting color out of hair.
Vitamin C is an antioxidant that can help to lighten hair when applied topically. It can be mixed with water to create a paste, which can be applied to the hair and left on for a period of time before rinsing. However, the effectiveness of this method can vary and it may not work for all hair colors or types.
If you want to remove hair dye or lighten your hair color, it is generally best to use a hair color removal product or seek the services of a professional stylist. These methods are more reliable and can help you achieve your desired result without damaging your hair.