1. A cosmetic composition containing acanthus as an active substance and at least one cosmetically acceptable excipient. The cosmetic composition according to claim 1, characterized in that the acanthus is in the form of an acanthus extract containing mucus with a mass fraction in terms of the total content of reducing sugars in the range from 1 to 80%. The cosmetic composition according to claim 2, characterized in that it contains dry acanthus extract in an amount of from 0.01 to 2 g per 100 g of the composition. The cosmetic composition according to claim 2, characterized in that the amount of dry acanthus extract is in the range from 0.1 to 0.7 g per 100 g of composition. Cosmetic composition according to any one of claims 1 to 4, characterized in that it is in the form of shampoo, balm, gel, lotion, foam, spray, cream. 6. Cosmetic composition according to any one of claims 1 to 4, characterized in that the acanthus is selected from, and. 7. The use of acanthus as an active substance in a cosmetic composition for hair care, designed to improve the formation of curls and / or maintain the effect of curling hair. 8. The use according to claim 7, characterized in that the acanthus is in the form of an acanthus extract containing mucus with a mass fraction in terms of the total content of reducing sugars in the range from 1 to 80% .9. The use according to claim 7, characterized in that the acanthus is in the form of an acanthus extract containing mucus with a mass fraction in terms of the total content of reducing sugars of more than 30% .10. The use according to claim 7, characterized in that the acanthus extract additionally contains amino acids and proteins. The use according to any one of claims 7 to 10, characterized in that the acanthus is selected from, and.1. Косметическая композиция, содержащая акант в качестве активного вещества и по меньшей мере один косметически приемлемый эксципиент.2. Косметическая композиция по п.1, отличающаяся тем, что акант находит