What is a common use for demi-permanent hair color?

Demi-permanent hair color is commonly used to cover gray hair without significantly lightening the natural hair color. This type of hair color contains a lower level of ammonia and utilizes a developer, making it less harsh than permanent colors. It allows for a more subtle change while giving excellent gray coverage, usually leaving the hair looking natural and healthier after the application. The dye penetrates the hair shaft but does not involve the lightening components found in permanent colors, making it ideal for those wanting to blend grays without altering their base color drastically.

While other choices mention lightening hair or creating vibrant or pastel shades, demi-permanent formulas are not designed for those purposes. They are tailored for enhancing natural shades and offering a softer blend of color, which incorporates gray coverage as a primary function.