A method for treating intact irritated or inflamed skin with a composition comprising at least one Histamine Receptor pathway inhibitor; at least one Lipoxygenase pathway inhibitor; at least one Cyclooxygenase pathway inhibitor and at least one Chemotaxis pathway inhibitor.

The present invention relates to the use of a peptide and glycoside extract of Schizandra fruit as a cutaneous neurosensory agent, for improving the response of the cutaneous neurosensory system, in particular for: —improving cutaneous innervation in the basal state, —combatting age-related loss of cutaneous innervation in the basal state, advantageously for preventing loss of the cutaneous sensitivity and/or combatting thinning of the epidermis, and/or—improving cutaneous perception of the environment, more particularly for combatting burns, extreme cold and/or pain.

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.

The invention relates to a method for enriching protists with lipids rich in polyunsaturated fatty acids (PUFA) in particular of the omega 3 (ω3) class, said method comprising the culture of protists in a culture medium comprising a selenium-containing compound as well as the protists enriched with lipids rich in PUFA obtained by this method. The invention also relates to a method for producing lipids rich in PUFA, comprising, after the enrichment method according to the invention, a method for treating the protists by extraction from the biomass of selenium-containing lipids rich in PUFA. The invention finally relates to any food, cosmetic or pharmaceutical product comprising either selenium-containing lipids thus extracted, or selenium-containing biomass originating from the enrichment method.

The invention relates to a method for enriching protists with lipids rich in polyunsaturated fatty acids (PUFA) in particular of the omega 3 (ω3) class, said method comprising the culture of protists in a culture medium comprising a selenium-containing compound as well as the protists enriched with lipids rich in PUFA obtained by this method. The invention also relates to a method for producing lipids rich in PUFA, comprising, after the enrichment method according to the invention, a method for treating the protists by extraction from the biomass of selenium-containing lipids rich in PUFA. The invention finally relates to any food, cosmetic or pharmaceutical product comprising either selenium-containing lipids thus extracted, or selenium-containing biomass originating from the enrichment method.

New extracts of microalgae, halophytes and psammophilous plants are suggested, obtainable by treating said microalgae and plants with a solvent selected from the group consisting of C.sub.1-C.sub.4 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 activity as regulators of the metabolism of human sebaceous glands.

The present disclosure relates to methods for extraction of biomass. Biomass of most interest is that which contains biologically active, extracts suitable for the skin care market. The biomass of interest includes botanicals (plant extracts and bioferments thereof), algae (red, brown, green and red, including bioferments thereof), fungi and even animal extracts (insect, crustacean) origin. Further the use of said extracts in cosmetic preparations prepared by the disclosed method is envisioned.

The present disclosure relates to methods for extraction of biomass. Biomass of most interest is that which contains biologically active, extracts suitable for the skin care market. The biomass of interest includes botanicals (plant extracts and bioferments thereof), algae (red, brown, green and red, including bioferments thereof), fungi and even animal extracts (insect, crustacean) origin. Further the use of said extracts in cosmetic preparations prepared by the disclosed method is envisioned.

Suggested are new extracts of microalgae selected from the group consisting of (i) Monodus sp. (ii) Thalassiosira sp. (iii) Chaetoceros sp. and/or (iv) Chlorococcum sp.
obtainable by treating said microalgae with a solvent selected from the group consisting of C.sub.1-C.sub.4 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.

Suggested are new extracts of microalgae selected from the group consisting of (i) Monodus sp. (ii) Thalassiosira sp. (iii) Chaetoceros sp. and/or (iv) Chlorococcum sp.
obtainable by treating said microalgae with a solvent selected from the group consisting of C.sub.1-C.sub.4 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.