| 摘要 |
PROBLEM TO BE SOLVED: To provide a hair dye composition which is excellent in a hair-dyeing property, can be adjusted to a desired color, and can especially dye gray hair in a red-free black or gray color. SOLUTION: This one pack type hair dye composition has pH 8 to 11 and comprises (A) one or more compounds represented by formula (1) [the broken line shows the presence or absence of aπ-bond; R<SP>1</SP>is OH or acetoxy; R<SP>2</SP>is H, -COOR (R is H, CH<SB>3</SB>or C<SB>2</SB>H<SB>5</SB>) or -COO<SP>-</SP>X<SP>+</SP>(X<SP>+</SP>is a cation); R<SP>3</SP>is H, acetyl, CH<SB>3</SB>or C<SB>2</SB>H<SB>5</SB>], (B) a direct dye, (C) a nonionic surfactant, and (D) a thickening polymer. COPYRIGHT: (C)2008,JPO&INPIT |
