What is the application of hair color to hair that has not previously been colored called?

The application of hair color to hair that has not previously been colored is referred to as a virgin application. This term specifically describes the process of applying hair dye to uncolored hair, which allows for the transformation of the hair's natural color without any prior interventions. When hair has never undergone color treatment, it is considered "virgin" because it retains its original pigmentation.

Understanding virgin application is essential for hairstylists and barbers, as it often requires different techniques, formulations, and processing times compared to retouching previously colored hair. This approach allows for a more vibrant and even color result, as the untainted hair can absorb the color more effectively. Conversely, other options pertain to different scenarios, such as retouching existing color or mixing products, which are not applicable in this specific context.