Black wristbands can mean many different things, particularly when used to raise awareness or show support for a cause. Some specific examples of types of support campaigns are gang prevention and skin cancer awareness.
Black wristbands don't always support a special cause. They can be worn to represent mourning or the loss of someone or something important. The color black can also represent awareness and self control. A person may wear a black wristband to symbolize protection from external stress. This kind of symbolism is popular with teenagers because it can also symbolize the end of an old way of life and the beginning of a new one.