ARTIFICIAL HAIR, METHOD FOR PRODUCING SYNTHETIC FIBER CONSTITUTING ARTIFICIAL HAIR, METHOD FOR PRODUCING ARTIFICIAL HAIR, AND WIG

PROBLEM TO BE SOLVED: To provide artificial hair that it is possible to eliminate the extreme difference between the brightness of the color of the actual artificial hair and the brightness of the artificial hair in the image photographed with the infrared camera, and it is possible to form bristles with a high color in brightness.SOLUTION: An artificial hair 1 is dyed with a dye 12 of a synthetic fiber 10. When the lightness of the color of the undyed synthetic fiber 10 is B1, the lightness of the color of the artificial hair 1 dyed is B2, and the lightness of the color of the artificial hair 1 in the image photographed by an infrared camera irradiating a near infrared light source is B3, the infrared absorption dye 11 having an amount that satisfies all of the following relationships (1) and (2) is added to the synthetic fiber 10: Lightness B1>Lightness B2 (1); Lightness B1>Lightness B3 (2).SELECTED DRAWING: Figure 3 【課題】実際の人工毛髪の色の明度と、赤外線カメラで撮影された画像中の人工毛髪の明度との間における極端な差異を無くすことができ、且つ明度の高い色の植毛目を形成することが可能となる人工毛髪を提供する。【解決手段】合成繊維１０を染料１２で染色した人工毛髪１であって、未染色の合成繊維１０の色の明度をＢ１、染色済の人工毛髪１の色の明度をＢ２、近赤外線光源を照射する赤外線カメラで撮影された画像中の人工毛髪１の明度をＢ３とした場合に、下記（１）及び（２）の関係をいずれも満たす量の赤外線吸収色素１１が、合成繊維１０に添加された構成としてある。明度Ｂ１＞明度Ｂ２・・・（１）明度Ｂ１＞明度Ｂ３・・・（２）【選択図】図３