Patent ID: 7138178

Claim:
An artificial fiber for hair obtained from an acrylic based synthetic fiber having a single fiber size of 20 dtex to 80 dtex, the artificial fiber comprising: an optical diffusion coefficient of a fiber of not less than 0.25; a reflectance to a white light within a range of either of following (1) or (2), (1) a reflectance of 15% to 36% in case of a fiber with an L value of less than 21 in Hunter's Lab, (2) a reflectance of 36% to 70% in case of a fiber with an L value of not less than 21 in Hunter's Lab; a knot-shaped unevenness on a surface of the artificial fiber; and a difference of average height between a projected area and a depressed area of 5 micrometers to 15 micrometers on the surface.