When considering the application of highlights to your hair, one might ponder, should I wash my hair prior to the appointment? Is it beneficial to arrive with a freshly cleansed scalp, or could that potentially detract from the effectiveness of the dye? Could the natural oils present in unwashed hair serve as a protective barrier for the scalp during the highlighting process? Moreover, how does the condition of your hair play into the equation? Might those oils safeguard your locks from potential damage, or do they interfere with the adherence of the color? It is crucial to contemplate whether the stylist has a preference or if there are industry standards that dictate one practice over another. Could the decision hinge on the specific products being used during the highlighting procedure? Ultimately, how might factors such as hair type, porosity, and overall health influence this important decision? What insights can be gleaned from seasoned professionals in the field?