Coarse hair takes longer when coloring hair than soft pliable hair because__________

Coarse hair takes longer to color than soft, pliable hair primarily because it has a larger diameter. The larger diameter of coarse hair means that it has a thicker cuticle layer, which can create a barrier to the absorption of hair color. This thicker cuticle can also lead to slower penetration of the color molecules, requiring a longer processing time to achieve the desired color result.

While coarse hair may also exhibit resistance to color due to its structure, the key factor in determining the time it takes for the color to develop is indeed its diameter, which affects how well the color can adhere and be absorbed. This understanding is crucial in hair coloring practices, as it helps cosmetologists adjust processing times and techniques based on the texture of the hair they are working with.