In Islam, it is generally permissible to dye your hair as long as the dye used is not harmful or prohibited. Dyeing hair for cosmetic purposes, to cover gray hair, or for personal preference is allowed. However, using haram (forbidden) substances or changing the hair color to imitate the opposite gender may be discouraged or prohibited. It’s important to ensure that the hair dye is halal (permissible) and not harmful to health. Consulting with a knowledgeable scholar or religious authority can provide specific guidance based on individual circumstances.