Abstract: The invention relates to the use of an extract of the fungus Inonotus obliquus for maintaining and/or increasing the cohesion of the skin tissues, for preventing the appearance of and/or for reducing shadows and/or bags in the area around the eyes, for maintaining and/or increasing the radiance and/or homogeneity of the skin complexion and/or for maintaining and/or increasing the barrier function of the skin and/or for increasing the skin microcirculation. The invention also relates to the extract of I. obliquus or a dermatological composition comprising same, for its use for reducing ruddiness and/or for preventing and/or reducing pathologies resulting from a reduction in the cohesion of the skin tissues, notably itching and/or couperosis.

Abstract: The present invention relates to the cosmetic use of a Bixa orellana extract for preventing and/or reducing sebum secretion and/or for preventing and/or reducing the unaesthetic and/or unpleasant and/or uncomfortable manifestations of sebum secretion. It also relates to a cosmetic care method, characterized in that it comprises the topical application to at least one area of skin, advantageously of the scalp, of a Bixa orellana extract for preventing and/or reducing sebum secretion and/or for preventing and/or reducing the unaesthetic and/or unpleasant and/or uncomfortable manifestations of sebum secretion. Finally, it relates to a Bixa orellana extract for use in the treatment and/or prevention of a pathological condition associated with sebum hyperproduction chosen from pathological hyperseborrhoea and seborrhoeic eczema and/or any combination thereof.

Abstract: The present invention relates to the cosmetic use of a Khaya senegalensis extract, obtained by aqueous extraction, for maintaining and/or increasing the expression of collagen XVIII in the skin and/or the mucosae and/or the scalp and/or the skin appendages, for maintaining and/or increasing the firmness and/or the elasticity of the skin and/or the mucosae and/or the scalp and/or for reducing the visibility of the skin's pores and/or making the skin smoother and/or for limiting and/or reducing perspiration and/or limiting and/or reducing loss of head hair and/or body hair and/or increasing the growth of head hair and/or body hair and/or reducing or limiting sebum production.

Abstract: A process of differentiation of stem cells through the use of specific oxygen concentrations, provided that the stem cells are not human embryonic stem cells, and seeded on a support, in an appropriate culture medium, wherein the differentiation leads to: a. either a first group of specialized differentiated cells under normoxic conditions, and in an appropriate culture medium, b. or a second group of specialized differentiated cells under hypoxic conditions, in a culture medium of the same nature as the one used for obtaining the first group of specialized differentiated cells; the first and second groups of specialized differentiated cells retaining the functional properties of the corresponding specialized differentiated cells respectively obtained through a biological natural process.

Abstract: The invention relates to the use of a unit including a substrate and polyelectrolyte multilayer films deposited thereon in order to: carry out a method involving the proliferation of initial stem or differentiated cells that are brought into contact with the unit; and cover the unit with confluent viable adherent cells resulting from the proliferation of the initial cells, the cover being obtained at the end of a period of no more than one month, such as 14 days, 11 days or, in particular, 7 days, after the initial cells are brought into contact with the unit.