Core-sheath composite fiber for artificial hair, headdress product including same, and production method therefor

A core-sheath conjugate fiber for artificial hair comprising a core part and a sheath part,

• wherein the core-sheath conjugate fiber for artificial hair is a colored fiber,
• a color difference ΔE* between the core-sheath conjugate fiber for artificial hair and the core part is 10 or more, and a color difference ΔE* between the core-sheath conjugate fiber for artificial hair and the sheath part is 10 or more, and
• the color difference ΔE* is calculated by the following Equation (1) using CIE1976 (L* a* b*) color space:
• ΔE*=[(L*1−L*2)2+(a*1−a*2)2+(b*1−b*2)2]1/2 (1)
• where L* represents lightness, a positive value of a* represents chromaticity toward red, a negative value of a* represents chromaticity toward green, a positive value of b* represents chromaticity toward yellow, a negative value of b* represents chromaticity toward blue, L*1, a*1, and b*1 are values for the core-sheath conjugate fiber for artificial hair and the core part, and L*2, a*2, and b*2 are values for the core-sheath conjugate fiber for artificial hair and the sheath part.