Delaware Cosmetology and Barbering Practice Exam 2025 – All-in-One Guide for Exam Success!

The most effective type of color application for covering gray hair is permanent hair color. This is because permanent hair color contains the necessary chemicals to lift the natural pigment in the hair and deposit the new color deep into the hair shaft. It provides lasting results and is formulated to ensure that gray hair is effectively covered, as it can penetrate and saturate resistant gray strands.

Unlike semi-permanent or temporary color options, which may only coat the hair's surface and can fade quickly, permanent color offers a more robust solution with longer wear. Highlighting, while a popular technique for adding dimension to hair, does not effectively cover gray since it involves lightening strands rather than fully covering them. Therefore, if the goal is to completely cover gray hair, the best choice is permanent hair color.