What is blue dye over green hair?

When blue dye is applied over green hair, it can result in a variety of outcomes depending on the exact shades of blue and green used.

If the blue dye is a darker shade than the green, it may end up covering the green completely and turning the hair blue. However, if the green is a brighter or lighter shade, the blue dye may not cover it completely and can instead blend with the green to create various green-blue shades.

In some cases, if the blue dye is not applied evenly or if the green underneath is not a uniform color, there may be patches or streaks of different shades in the hair.

Before applying any blue dye over green hair, it is recommended to consult with a hair stylist or colorist to determine the best approach and avoid any potential undesirable results. It is also important to note that dyeing hair frequently can cause damage, so proper hair care should be followed to maintain healthy hair.