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US 6,190,648 B1Granted
Hair cosmetics
AssigneeKao Corporation
InventorsEmiko Kouzu, Takashi Itou, Atsushi Uzu, Tadashi Nomura, Michiko Asami, Aya Hirano, Yoshiaki Itou
Life of this patent
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Abstract
In a hair cosmetic containing titanium-dioxide-coated mica, titanium-dioxide-coated mica with particle diameters of 20 μm or larger is used in a proportion not more than 10% by volume in the total volume of the titanium-dioxide-coated mica so that, when applied to hair, it may not impart an unnaturally glittering impression to the hair. To improve re-dispersibility of such a hair cosmetic, a carboxyvinyl polymer and an amphoteric macromolecule may be used in combination.
Claims6
A hair cosmetic comprising
- titanium-dioxide coated mica in an amount of 0.5% to 10% by weight, wherein said titanium-dioxide coated mica with particle diameters of 20 μm or larger is in a proportion of not more than 10% by volume of the total volume of the titanium-dioxide coated mica,
- a carboxyvinyl polymer in an amount of 0.01% to 0.2% by weight;
- and
- an amphoteric macromolecule having a molecular weight of 40,000 to 300,000 in an amount of 0.2% to 3% by weight.
1 more element
Dependencies are inferred from the claim text.