A non-pyrogenic preparation containing nanoparticles synthesized by magnetotactic bacteria for medical or cosmetic applications. The nanoparticles are constituted by a crystallized mineral central part including predominantly an iron oxide, as well as a surrounding coating without material from the magnetotactic bacteria.

The present invention relates to a carboxyalkyl chitosan, compositions comprising same, a process for manufacturing same, and various applications thereof, in particular in the field of therapy, rheumatology, ophthalmology, esthetic medicine, plastic surgery, internal surgely, dermatology or cosmetics.

For the cosmetic field, omniphobic cosmetic pigments under the form of a core shell structure: the core is or includes of a metal oxide on which is adsorbed poly(β-(1.fwdarw.4)-D-glucosamine) chains; the chains being acetylated, or partially or totally deacetylated. Also, the process for manufacturing the omniphobic cosmetic pigments, including: (i) preparing an acidic aqueous solution including metal oxide particles and a poly (β-(1.fwdarw.4)-D-glucosamine), the poly (β-(1.fwdarw.4)-D-glucosamine) being acetylated, or partially or totally deacetylated; and (ii) increasing the pH until 12, of the solution obtained at step (i) in order to obtain the adsorption of said poly (β-(1.fwdarw.4)-D-glucosamine on the metal oxide particles and the precipitation of the resulting metal oxide particles coated with the poly (β-(1.fwdarw.4)-D-glucosamine.

There is provided a method for treating pigmented lesions comprising a composition which comprises at least one oxidant, at least one photoactivator capable of activating the oxidant. The composition may further comprise at least one healing factor chosen from hyaluronic acid, glucosamine and allantoin, in association with a pharmaceutically acceptable carrier.

The invention relates to i) a process for treating keratin fibres, in particular human keratin fibres such as the hair, employing a) at least one oxidized polysaccharide, in particular oxidized inulin, and b) at least one (polysaccharide with amine group(s); ii) a composition comprising the ingredients a) and b); iii) the use of a) and b) to treat keratin fibres, in particular human keratin fibres such as the hair, and iv) a multi-compartment kit or device comprising a) and b). The invention makes it possible to obtain good hair-conditioning cosmetic properties, with a long-lasting effect.

Hair treatment compositions, kits for producing such hair treatment compositions, and methods for using such kits and/or hair treatment compositions are provided for treating hair. Methods for treating hair typically include: obtaining a first composition comprising one or more polysaccharides with amine group(s) and water; adding ascorbic acid and one or more peroxides, peroxo compounds, or combinations thereof to the first composition to obtain a second composition; applying the second composition to hair; and heating the hair, which has the second composition applied thereto, to a temperature above 25° C. Kits for improving hair typically include a first composition comprising one or more polysaccharides with amine group(s) and water; a second composition comprising up to 100 wt. % of ascorbic acid; and a third composition comprising a peroxide, a peroxo compound, or a combination thereof, wherein the first composition, the second composition, and the third composition are separately contained.

A skin care film based on bioliber for promoting skin-repairing, skin-moisturizing and skin-soothing, including a bacterial-cellulose-type film body having a first surface, a second surface, which is opposite to the first surface, a functional particle storage layer, disposed on said first surface and containing a plurality of functional particles, a plurality of functional particle channels disposed throughout said bacterial-cellulose-type body film body and connect the said first surface with said second surface; and a plurality of functional particle inside-channel control-released layer provided on inner surface of said functional particle channel, said functional particles having a size smaller than the inner diameter of the functional particle channel and said functional particle inside-channel control-released layer is structured in such a way to assist controlled release of said functional particles that diffuse across said functional particle channels from said functional particle storage layer to said second surface.

A non-pyrogenic preparation containing nanoparticles synthesized by magnetotactic bacteria for medical or cosmetic applications. The nanoparticles are constituted by a crystallized mineral central part including predominantly an iron oxide, as well as a surrounding coating without material from the magnetotactic bacteria.

The present invention relates to an aqueous composition comprising (i) at least hydrogel beads comprising 2 gelling agents chosen from (hetero)polysaccharides, (ii) at least one foaming surfactant, and (iii) at least anacrylic copolymer of acrylic acid and C10-C30 alkyl acrylate. The present invention further relates to the use of said composition as a cleansing scrub composition of the skin.

The present application discloses dual-function starch-based composite nanoparticles as well as a preparation method and application thereof. The preparation method comprises: hydrolyzing starch to form linear dextrin, grading the linear dextrin by using an alcohol-alcohol gradient precipitation method to obtain linear dextrin having homogeneous molecular weight distribution; oxidizing the linear dextrin by adopting an oxidation system to obtain oxidized dextrin; carrying out complex reaction on the oxidized dextrin and curcumin to form an oxidized dextrin-curcumin complex; and forming an oxidized dextrin-curcumin/chitosan hydrochloride composite nanoparticles from the oxidized dextrin-curcumin complex and chitosan hydrochloride. The aqueous phase solution of the dual-function starch-based composite nanoparticles containing gel polysaccharide is uniformly mixed with primary emulsion, calcium ion induction is carried out on the obtained double emulsion to obtain double-emulsion gel.