What should be avoided when selecting a hair color?

When selecting a hair color, choosing a color outside your natural spectrum should be avoided because it can lead to unexpected and often unflattering results. Hair colors that are significantly different from your natural shade may not complement your skin tone or overall appearance. This can result in a drastic change that may not work well with your existing features, potentially leading to dissatisfaction with the color after application.

Consulting color charts is a standard practice and helps provide visual guidance and understanding of how different shades may look on an individual. Utilizing a hair dye test is also a recommended practice to see how the dye interacts with your hair before making a full application. Applying conditioner before coloring, while it may be practiced by some to protect the hair, typically does not interfere with the coloring process itself. Hence, option B stands out as the practice that should be avoided in the context of achieving a successful and aesthetically pleasing hair color transformation.