Disclosed is a cosmetic or dermatological preparation which comprises one or more extracts of Saxifraga oppositifolia (purple saxifrage) and/or one or more extracts of Soldanella alpina (alpine snowbell). The use of these extracts to combat extrinsic and intrinsic skin aging is likewise described.

Disclosed is a cosmetic or dermatological preparation which comprises one or more extracts of Saxifraga oppositifolia (purple saxifrage) and/or one or more extracts of Soldanella alpina (alpine snowbell). The use of these extracts to combat extrinsic and intrinsic skin aging is likewise described.

Disclosed is a cosmetic or dermatological preparation which comprises one or more extracts of Saxifraga oppositifolia (purple saxifrage) and/or one or more extracts of Soldanella alpina (alpine snowbell). The use of these extracts to combat extrinsic and intrinsic skin aging is likewise described.

Provided is a screening method for a laminin 511 expression promoter, which takes the expression of laminin 511 as an indicator. Also provided is an agent for improving skin barrier function, elasticity, hydration and inflammation. This agent includes at least one extract selected from among a group consisting of brown algae, red algae and green algae.

Provided is a screening method for a laminin 511 expression promoter, which takes the expression of laminin 511 as an indicator. Also provided is an agent for improving skin barrier function, elasticity, hydration and inflammation. This agent includes at least one extract selected from among a group consisting of brown algae, red algae and green algae.

A microalgal flour having a particle size of between 30 and 150 μm and compressibility, measured by way of POWDER TESTER HOSOKAWA, of between 45 and 55%, has a flow value, determined according to a test A, of between 55 and 60% by weight for residue at 2,000 μm, dispersibility and wettability, expressed according to a test B, by the height of the product decanted in a beaker, of a value of between 0 and 2 mm; and a degree of humidification of a value of more than 70%, and preferably of more than 80%, of the total powder.

A microalgal flour having a particle size of between 30 and 150 μm and compressibility, measured by way of POWDER TESTER HOSOKAWA, of between 45 and 55%, has a flow value, determined according to a test A, of between 55 and 60% by weight for residue at 2,000 μm, dispersibility and wettability, expressed according to a test B, by the height of the product decanted in a beaker, of a value of between 0 and 2 mm; and a degree of humidification of a value of more than 70%, and preferably of more than 80%, of the total powder.

The present invention relates in particular to a cosmetic composition comprising, in a physiologically acceptable medium, at least: a) a cosmetic agent consisting of galactomannans with molar masses comprised between 5 and 630 kDa, preferably between 5 and 120 kDa, more preferably between 8 and 80 kDa, and cross-linked sulfated galactans with molar masses comprised between 7 and 3000 kDa, preferably between 7 and 1100 kDa, more preferably between 8 and 200 kDa, and b) a Theobroma cacao L bean hydrolysate, and its use in particular for maintaining the balance of the skin microbiota and promoting and/or improving the wear of make-up.

The present invention relates in particular to a cosmetic composition comprising, in a physiologically acceptable medium, at least: a) a cosmetic agent consisting of galactomannans with molar masses comprised between 5 and 630 kDa, preferably between 5 and 120 kDa, more preferably between 8 and 80 kDa, and cross-linked sulfated galactans with molar masses comprised between 7 and 3000 kDa, preferably between 7 and 1100 kDa, more preferably between 8 and 200 kDa, and b) a Theobroma cacao L bean hydrolysate, and its use in particular for maintaining the balance of the skin microbiota and promoting and/or improving the wear of make-up.

The purpose of this invention is to provide a method with which it is easy to perform screening for an agent that proliferates or an agent that minimizes the reduction in MCSP-positive basal epidermal stem cells. Provided is a screening method for a laminin 511 expression promoter, which takes the expression of laminin 511 as an indicator. Also provided is an agent for improving skin barrier function, elasticity, hydration and inflammation, said agent including at least one extract selected from among a group consisting of brown algae, red algae and green algae.