Use of metal oxide nanopigments for protecting hair keratin against atmospheric attack, especially light, method of protecting hair and gel composition using these nanopigments
AssigneeL'oreal
InventorsChristine Dupuis, Claude Dubief
Life of this patent
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Abstract
Use of metallic oxide nanopigments selected from titanium, zinc, cerium and zirconium or blends thereof, having an average size of less than 100 nm and preferably 5 and 50 nm, to preserve the hair's mechanical properties and especially its strength and elasticity, and protect it against external influences and especially sunlight. The quantity of metallic oxide nanopigments used in a non-rinsed cosmetic support is between 0.2 and 2% by weight. The invention also concerns cosmetic compositions for hair in the form of gel.
Claims27
Method of protecting the mechanical properties of hair, particularly its tensile strength and elasticity, against atmospheric attack, and in particular against light comprising applying to the hair 0.2 to 2% by weight of at least one metal atmospheric attack protecting oxide nanopigment selected from the group consisting of titanium, zinc, cerium and zirconium oxides having a diameter of less than 100 nanometers in a cosmetic support, said application not being followed by rinsing.
Non-rinse cosmetic composition for hair in the form of a gel for protecting the hair against atmospheric attack, in particular against light, comprising 0.2 to 2% by weight of at least one metal oxide nanopigment selected from the group consisting of titanium, zinc, cerium and zirconium oxides having a diameter of less than 100 nanometers, in a gelled cosmetic support.
Method for protecting hair keratin against atmospheric attack, especially against light, comprising applying to the hair 0.2 to 2% by weight of at least one metal atomospheric attack protecting oxide nanopigment selected from the group consisting of titanium, zinc, cerium and zirconium oxides having an average diameter of less than 100 nanometers, in a cosmetic support.
Dependencies are inferred from the claim text.