Patent ID: 7429575

Claim:
A method of alleviating or improving a cosmetic condition or dermatological indication, the method comprising topically administering to a mammalian subject an effective amount of a composition comprising an N-(phosphonomethyl)-amino acid as a free acid, salt, partial salt, lactone, amide or ester, or in stereoisomeric or non-stereoisomeric form; wherein the N-(phosphonomethyl)-amino acid is selected from the group consisting of N-(phosphonomethyl)-alanine, N-(phosphonomethyl)-arginine, N-(phosphonomethyl)-asparagine, N-(phosphonomethyl)-aspartic acid, N-(phosphonomethyl)-cysteine, N-phosphonomethyl)-glutamic acid, N-phosphonomethyl)-glutamine, N-(phosphonomethyl)-glycine, N-(phosphonomethyl)-histidine, N-(phosphonomethyl)-isoleucine, N-(phosphonomethyl)-leucine, N-(phosphonomethyl)-lysine, N-(phosphonomethyl)-methionine, N-(phosphonomethyl)-phenylalanine, N-(phosphonomethyl)-proline, N-(phosphonomethyl)-serine, N-(phosphonomethyl)-threonine, N-(phosphonomethyl)-tyrosine and N-(phosphonomethyl)-valine; and wherein the cosmetic condition or dermatological indication is selected from the group consisting of age spots; dry skin; hyperkeratosis; hyperpigmented skin; ichthyosis; keratoses; lentigines; melasmas; pruritus; and for skin lightening.