Metal complexes for promoting skin desquamation and/or stimulating epidermal renewal

A regime or regimen for preventing or treating dry skin and/or cutaneous signs of aging and/or skin pigmentation and/or treating acne-prone greasy skin, comprising administering to an individual in need of such treatment, a thus effective amount of at least one metal complex able to at least 2-fold accelerate the hydrolysis, in aqueous solution at neutral or slightly alkaline pH or in a water/acetonitrile or water/acetone mixture, of a p-nitrophenol phosphate, p-nitrophenol acetate or p-nitroaniline acetate substrate.

A regime or regimen for decreasing skin pigmentation, comprising topically applying onto the skin of such individual in need of such treatment, a thus effective amount of at least one metal complex able to at least 2-fold accelerate the hydrolysis, in aqueous solution at neutral or slightly alkaline pH or in a water/acetonitrile or water/acetone mixture, of a p-nitrophenol phosphate, p-nitrophenol acetate or p-nitroaniline acetate substrate.

A regime or regimen for preventing or treating a hyperkeratosis-induced skin disorder, comprising administering to an individual in need of such treatment, a thus effective amount of at least one metal complex able to at least 2-fold accelerate the hydrolysis, in aqueous solution at neutral or slightly alkaline pH or in a water/acetonitrile or water/acetone mixture, of a p-nitrophenol phosphate, p-nitrophenol acetate or p-nitroaniline acetate substrate.