Which of the following is NOT one of the three major design elements?

• A. Texture
• B. Color
• C. Form
• D. Line

Answer: (D)

In this design framework used for cosmetology, the three major design elements are Texture, Color, and Form. These describe how hair looks and feels on the surface (texture), the hue and tonal value (color), and the overall shape and volume of the hairstyle (form). Line, while important for directing the eye and defining edges, isn't counted among those three in this context. So Line is the one that doesn’t belong with Texture, Color, and Form. The other options—Texture, Color, and Form—are part of the trio because they directly shape the visual impact of the style: texture conveys surface quality and movement, color adds depth and mood, and form creates the silhouette and volume.