What should you do to prepare resistant grey hair for a single process color?

To prepare resistant grey hair for a single process color, it is crucial to presoften the hair. This process involves using specific techniques or products that help to open the hair cuticle slightly, allowing color to penetrate more effectively. Resistant grey hair often has unique structural characteristics, such as a thicker cuticle layer, which can make it harder for traditional color formulas to adhere and develop properly.

Presoftening helps to ensure even coverage and enhances the longevity of the color. This method can involve pre-treating the hair with a lighter color formula or using a developer designed to help lift the cuticle to effectively introduce the color. As a result, the hair is better prepared to absorb the color, resulting in a more vibrant and uniform finish.

Hydrating the hair, applying a deep conditioner, or washing with clarifying shampoo are all beneficial hair care practices. However, these methods do not specifically address the critical need for cuticle opening in resistant grey hair, making presoftening the most effective choice for ensuring successful color application.