Color-enhancing shampoos combine a surfactant base with which colors?

• A. Neon colors
• B. Primary colors
• C. Complementary colors
• D. Basic colors

Answer: (D)

Color-enhancing shampoos work by cleansing the hair while depositing a small amount of pigment from the color additives into the strands. The goal is a subtle, natural-looking tint rather than a bold, dramatic change. That’s why the colors used are basic hues—the foundational pigments that produce gentle, everyday color refreshes. Neon tones would be too flashy for a product meant to blend with existing hair color, while complementary colors are used mainly for correcting tones (neutralizing brass or yellow) rather than enhancing overall color. Basic colors provide a predictable, easy-to-maintain tint that complements the hair rather than fighting against or overpowering its tone.