A method for manufacturing a shaped cross-linked hyaluronic acid product including the step of subjecting a non-cross-linked precipitated hyaluronic acid substrate in a desired shape to a single cross-linking reaction in a liquid medium having a pH of 11.5 or higher and including one or more polyfunctional cross-linking agent(s) and an amount of one or more organic solvent(s) giving precipitating conditions for hyaluronic acid, under suitable conditions to obtain a precipitated, shaped cross-linked hyaluronic acid product having a degree of modification of 1-40 cross-linking agent units per 1000 disaccharide units.

A method for manufacturing a shaped cross-linked hyaluronic acid product including the step of subjecting a non-cross-linked precipitated hyaluronic acid substrate in a desired shape to a single cross-linking reaction in a liquid medium having a pH of 11.5 or higher and including one or more polyfunctional cross-linking agent(s) and an amount of one or more organic solvent(s) giving precipitating conditions for hyaluronic acid, under suitable conditions to obtain a precipitated, shaped cross-linked hyaluronic acid product having a degree of modification of 1-40 cross-linking agent units per 1000 disaccharide units.

Natural polymer-based fibrous elements including a modified polymer derived from a natural polymer and a surfactant, method for making such natural polymer-based fibrous elements and methods for making such fibrous structures are provided.

Natural polymer-based fibrous elements including a modified polymer derived from a natural polymer and a surfactant, method for making such natural polymer-based fibrous elements and methods for making such fibrous structures are provided.

The method to produce a packaged cosmetic product comprises a step of feeding a support film along a feed path, a step of forming a membrane substrate, and a step of packaging the membrane substrate. The method can be implemented by means of a suitable apparatus, which comprises a station for feeding the support film, a station for forming the membrane substrate, and a packaging unit, which are disposed in succession along the feed path of the support film.

The invention concerns a composition to be electrospun comprising a first compound to be electrospun, an electrospinning promoter and at least one active ingredient, as well as a method to prepare it. This composition allows to obtain electrospun nanometric fibers with good structural and absorption properties.

The invention concerns a composition to be electrospun, which comprises a first compound to be electrospun and an electrospinning promoter, the function of which is to facilitate the electrospinning of the first compound, in particular to establish the electrospinning method in order to obtain regular fibers. A method to prepare the composition is also described, which provides a step of mixing a first compound to be electrospun with an electrospinning promoter.

The invention concerns a composition to be electrospun, which comprises a first compound to be electrospun and an electrospinning promoter, the function of which is to facilitate the electrospinning of the first compound, in particular to establish the electrospinning method in order to obtain regular fibers. A method to prepare the composition is also described, which provides a step of mixing a first compound to be electrospun with an electrospinning promoter.

The electrospinning method comprises the steps of providing a composition to be electrospun; providing an electrospinning device comprising an electrospinning head and a collector; applying an electric field between the electrospinning head and the collector; and feeding the composition to be electrospun through the electrospinning head, so that the electric field applied induces the formation of an electrospun fiber.

The electrospinning method comprises the steps of providing a composition to be electrospun; providing an electrospinning device comprising an electrospinning head and a collector; applying an electric field between the electrospinning head and the collector; and feeding the composition to be electrospun through the electrospinning head, so that the electric field applied induces the formation of an electrospun fiber.