Red hair, just like hair of any color looks good in several lengths. Long hair, medium length hair, and short hair styles can look great in a red wig. Red wigs then must appeal to the wearer. They must fit the face and accentuate its features. The wig should also fit the character to the wearer.
A soft spoken, retiring person should not be wearing a long bright red wig with long overpowering bangs. Instead, she should consider wearing a shoulder length or short wig of red hair. Her face will need to be more prominent, so that she will not be overpowered by her hair.
Red tends to be a bold color. If your personality isn’t bold too, you can be overcome by your hair. Instead, if you have a bold personality, chose to wear a red wig and if not select a more subtle shade for a wig.