Yes, many hair units or toupees for men can be colored or highlighted. However, it is important to note that the ability to color or highlight a hair unit depends on the type of hair and construction used in its manufacturing. Here are some key points to consider:
Human Hair Units: If your toupee is made from natural human hair, it can generally be colored and highlighted like your own hair. You can consult with a professional hairstylist experienced in working with wigs or hair systems to achieve the desired color result.