Abstract: The present invention is directed to a hair treatment preparation comprising a payload in an intimate relationship to a polymeric nanostructure, the polymeric nanostructure being reactive to hair or capable of being immobilized onto or in hair. The nanoscopic nature of the entities being engineered ensures three distinct characteristics. First, the imparted attribute can be either nearly permanent or semi-permanent, depending on the attachment chemistry. In the semi-permanent version, the intended effect can be controllably erased by removal of the nanostructure by simple chemical or physical means. Second, the nanoscopic entities are invisibly small. Their presence does not deteriorate the hand or feel of the hair. Third, the nano-technology approach is infinitely flexible and adaptable. It can be coupled with many existing dyes, colorants, UV absorbers, fragrances, softening agents and the like for hair treatment.

Abstract: The present invention is directed to a hair treatment preparation comprising a payload in an intimate relationship to a polymeric nanostructure, the polymeric nanostructure being reactive to hair or capable of being immobilized onto or in hair. The nanoscopic nature of the entities being engineered ensures three distinct characteristics. First, the imparted attribute can be either nearly permanent or semi-permanent, depending on the attachment chemistry. In the semi-permanent version, the intended effect can be controllably erased by removal of the nanostructure by simple chemical or physical means. Second, the nanoscopic entities are invisibly small. Their presence does not deteriorate the hand or feel of the hair. Third, the nano-technology approach is infinitely flexible and adaptable. It can be coupled with many existing dyes, colorants, UV absorbers, fragrances, softening agents and the like for hair treatment.

Abstract: This invention is directed to sunscreen formulations that exhibit both UV absorption and skin coloring properties. More particularly, the colored sunscreen preparations of the invention comprise a colored nanostructure that is reactive to skin or capable of being immobilized onto the skin. The colored nanostructure comprises a particulate sunblock agent in intimate relationship with a coloring agent or a colored polymeric nanomatrix. These colored sunscreen compositions provide improved retention of sunblock and coloring agents on the skin.