Cosmetic agent formed by galactomannans obtained from
A cosmetic or dermocosmetic agent consisting of galactomannans with molecular masses in a range from 1 to 150 kDa obtained from Caesalpinia spinose and cross-linked sulfated galactans with molar masses in a range from 1 to 150 kDa obtained from Kappaphycus alvarezii . Non-therapeutic cosmetic methods in which the agent is applied on the skin in order to tens the skin and/or to form a film on the skin.
1. A cosmetic or dermocosmetic agent consisting of galactomannans obtained from Caesalpinia spinosa with average molar masses of between 5 and 30 kDa, and cross-linked sulfated galactans obtained from Kappaphycus alvarezii with molar masses of between 5 and 25 kDa and cross-linked with an ionic cross-linking agent, wherein the galactomannans and cross-linked sulfated galactans are present in an amount effective to produce a film-forming effect ensuring a tensor effect reducing the skin pores and reducing wrinkles and fine lines, and a skin-protector effect.
2. The cosmetic or dermocosmetic agent according to claim 1 , characterized in that the galactomannans obtained from Caesalpinia spinosa have an average molar mass of between 8 and 25 kDa, and the cross-linked sulfated galactans obtained from Kappaphycus alvarezii have an average molar mass of between 8 and 20 kDa.
3. The cosmetic or dermocosmetic agent according to claim 1 , characterized in that the galactomannans are obtained by hydrolysis of galactomannans of Caesalpinia spinosa.
4. The cosmetic or dermocosmetic agent according to claim 1 , characterized in that the cross-linked sulfated galactans are obtained by hydrolysis of sulfated galactans of Kappaphycus alvarezii.
5. The cosmetic or dermocosmetic agent according to claim 1 , characterized in that it consists of:
60 to 90% galactomannans, and
10 to 40% cross-linked sulfated galactans,
the percentages being given as mass/mass.
6. The cosmetic or dermocosmetic agent according to claim 1 , characterized in that it consists of:
70 to 90% galactomannans, and
10 to 30% cross-linked sulfated galactans,
the percentages being given as mass/mass.
7. The cosmetic or dermocosmetic agent according to claim 1 , characterized in that the galactomannans and cross-linked sulfated galactans together form an interpenetrated network.
8. A cosmetic or dermocosmetic composition suitable for a topical application onto human skin and comprising at least 0.1% of the agent according to claim 1 .
9. A cosmetic or dermocosmetic method for improving a condition of skin, the method comprising applying onto the skin the cosmetic composition of claim 8 .
10. The cosmetic or dermocosmetic method according to claim 9 , wherein the application of the agent improves the radiance of the skin.
11. The cosmetic or dermocosmetic method according to claim 10 , wherein the application of the agent combats skin ageing.
12. A method for tensing skin and/or forming a film on skin, the method comprising applying on the skin the cosmetic or dermocosmetic agent of claim 1 , and thereby tensing the skin and/or forming the film on the skin.
13. A method for protecting skin, the method comprising applying on the skin the cosmetic or dermocosmetic agent of claim 1 , and thereby protecting the skin.
14. A method for protecting skin against penetration of toxic molecules, the method comprising applying on the skin the cosmetic or dermocosmetic agent of claim 1 , and thereby protecting the skin against the penetration of toxic molecules.
15. A method for protecting skin against bacterial adhesion of pathogens, the method comprising applying on the skin the cosmetic or dermocosmetic agent of claim 1 , and thereby protecting the skin against the penetration of toxic molecules.
16. A method for improving a barrier effect of skin, the method comprising applying on the skin the cosmetic or dermocosmetic agent of claim 1 , and thereby improving the barrier effect of the skin.
17. A method for improving radiance of skin and/or smoothing a microrelief of skin and/or smoothing wrinkles, the method comprising applying on the skin the cosmetic or dermocosmetic agent of claim 1 , and thereby improving the radiance of the skin.
18. A method for combating skin ageing, the method comprising applying on the skin the cosmetic or dermocosmetic agent of claim 1 , and thereby combating skin ageing.
19. A method for improving a make-up hold and/or improving dispersion of pigments in cosmetic formulations, the method comprising applying on the skin the cosmetic or dermocosmetic agent of claim 1 , and thereby improving the make-up hold and/or improving the dispersion of pigments in cosmetic formulations.
20. A method for producing a second skin and producing a beauty booster effect, the method comprising applying on the skin the cosmetic or dermocosmetic agent of claim 1 , and thereby producing the second skin and producing the beauty booster effect.