A method of reducing oxidative damage of skin is disclosed. The method includes applying to oxidant damaged skin a topical composition comprising oligopeptide-1 and niacinamide, wherein the combination of oligopeptide-1 and niacinamide reduces oxidative damage in the skin, and wherein the oligopeptide-1 includes the sequence of caprooyl-Gly-His-Lys-Lys.

The invention relates to a peptide extract of the microalga Chlamydomonas acidophila, and to a method for the preparation thereof. The invention also relates to a composition, advantageously a cosmetic or dermatological composition, comprising such an extract. The invention also relates to such a composition or such an extract for use in the prevention or treatment of disorders or diseases affecting the skin, mucous membranes or skin appendages, for use in the prevention or treatment of vascular disorders, or else for use in the prevention or treatment of adipose tissue modifications. The invention finally relates to a cosmetic care process for the skin, the skin appendages or the mucous membranes, with a view to improving the condition thereof or the appearance thereof, which process consists in administering such a composition or such an extract.

The present invention provides a microalgae product and a production method for the microalgae product. In one embodiment, the present invention provides a method for treating microalgae without an increase in pheophorbide. By this method, provided is a safe microalgae product having reduced pheophorbide. Such a microalgae product provides various healthy, nutritional, and/or cosmetic effects. The present invention also provides a culturing device that enables high-concentration culturing with less bacterial contamination, and thereby enables highly useful culturing of microalgae.

The present invention provides a microalgae product and a production method for the microalgae product. In one embodiment, the present invention provides a method for treating microalgae without an increase in pheophorbide. By this method, provided is a safe microalgae product having reduced pheophorbide. Such a microalgae product provides various healthy, nutritional, and/or cosmetic effects. The present invention also provides a culturing device that enables high-concentration culturing with less bacterial contamination, and thereby enables highly useful culturing of microalgae.

A composition including ascorbic acid, a silicone oil, and at least 15% by weight of an essential oil is disclosed. At least 50% of the initial amount of ascorbic acid in the non-aqueous composition can remain stable when the composition is stored for at least 1 month at room temperature.

A composition including ascorbic acid, a silicone oil, and at least 15% by weight of an essential oil is disclosed. At least 50% of the initial amount of ascorbic acid in the non-aqueous composition can remain stable when the composition is stored for at least 1 month at room temperature.

A method of treating skin with a composition is disclosed. The method can include topically applying an effective amount of a composition to skin in need thereof, wherein the composition comprises an aqueous extract of plankton comprising an exopolysacchride synthesized by Vibo alginolyticus, an aqueous extract of Phragmites communis, an aqueous extract of Poria cocos, and an aqueous extract of Cucurbita pepo (pumpkin) seed.

A method of treating skin with a composition is disclosed. The method can include topically applying an effective amount of a composition to skin in need thereof, wherein the composition comprises an aqueous extract of plankton comprising an exopolysacchride synthesized by Vibo alginolyticus, an aqueous extract of Phragmites communis, an aqueous extract of Poria cocos, and an aqueous extract of Cucurbita pepo (pumpkin) seed.

New extracts of Nannochloropsis sp. and related species of Nannochloropsis are suggested, obtainable by treating said microalgae with a solvent selected from the group consisting of C.sub.1-C.sub.1 aliphatic alcohols, ethyl acetate, water or their mixtures, removing the dissolved extracts from the residues and recovering the pure extracts from the solvent. The extracts show excellent properties particularly in modulating the metabolism of human skin and hair follicles.

New extracts of Nannochloropsis sp. and related species of Nannochloropsis are suggested, obtainable by treating said microalgae with a solvent selected from the group consisting of C.sub.1-C.sub.1 aliphatic alcohols, ethyl acetate, water or their mixtures, removing the dissolved extracts from the residues and recovering the pure extracts from the solvent. The extracts show excellent properties particularly in modulating the metabolism of human skin and hair follicles.