40 results about "Depigmenting agents" patented technology

The present invention relates to compositions useful in treating hyperpigmentation and the various signs of dermatological aging in human skin. The present invention also relates to cosmetic compositions and methods of using such compositions that improve the aesthetic appearance of skin. Further, the present invention relates to methods of applying the compositions to the skin to effect treatment and to improve the aesthetic appearance of skin, particularly, by providing anti-aging benefits to the skin. These and other objects of the present invention are achieved by a method and composition that comprises (a) a de-pigmenting agent or anti-aging agent in an amount effective to prevent, treat and/or ameliorate pigmentation or the various signs of aging at an area of skin to which it is applied, and (b) a cosmetically or pharmaceutically acceptable vehicle. Suitable de-pigmenting agents include 3,3'-thiodipropionic acid, thiazolidine-2-carboxylic acid, Kaempferol-7-glucoside, perilla oil, and clofibrate and clofibrate analogs and/or derivatives, as well as those set forth below. Suitable anti-aging agents include 3,3'-thiodipropionic acid and/or its derivatives.

The invention discloses a polyvinyl chloride transparent compound and a tubular product thereof. By weight percentage, the polyvinyl chloride transparent compound consists of 100 parts of PVC resin, 1.0 to 3.0 parts of stabilizing agent, 0.2 to 1 part of lubricant, 1 to 3 parts of processing modifier, 2 to 5 parts of impact modifier, 0.001 to 0.008 parts of depigmenting agent, 0.2 to 0.6 parts ofageing resistant and 0 to 10 parts of plasticizing agent. The polyvinyl chloride tubular product is prepared by respectively mixing the polyvinyl chloride transparent compound at high temperature withhigh speed and at low temperature with low speed, extruding and forming. The color of the tubular product is bright, transparent and even. The inner wall thereof is smooth so scale is difficult to deposit. The tubular product is convenient to monitor by a system because the inner flow transporting direction and status can be seen clearly. The tubular product can be covered on pipeline for transporting important or dangerous chemical products, with a monitor and protection function and an excellent ageing resistance. The invention is applied to outdoors.

The invention provides a yellow fluorescence ink and its erasing liquid. The ink includes dye, pH regulator, dispersant, plasticiser, sodium citrate, ethanol and distilled water. The ink can be removed by a specific erasing liquid, which is composed of depigmenting agent, complexing agent, dispersant, anti-freeze agent, ethanol, essence and distilled water. The inventive ink has the properties of bright color, non-toxicity, insipidity, fluently writing, which can be used during writing, drawing or marking. It will not shield the existing character and the remarked characters are showed predominantly. The invention erasing liquid can quickly erase the content written by said ink.

Treatment of post-inflammatory hyperpigmentation (PIH) in black and asian skin is accelerated from natural healing by use of a composition comprising a retinoid and/or an inhibitor of cytochrome P-450 enzyme-mediated degradation of retinoids, the composition does not require a conventional depigmenting or bleaching agent (such as a hydroquinone) as is typically used. Healing of PIH lesions is accelerated about three to five times from normal healing. Additionally, these compositions are useful separately for lightening black or asian skin.

The invention belongs to the preparation field of epoxy curing agents and discloses a method of preparing C21 dicarboxylates polyamide epoxy curing agent with methyl eleostearate as follows: the first step: 100 molar portions of methyl eleostearate, 20.6-30.9 molar portions of acrylic acid, and inhibitor accounting for 0.5% to 1.5% mass of the acrylic acid are processed with addition reaction at 160 to 180 DEG C for 2 to 3 hours; then the non-reactant is removed through vacuum distillation and the reactant is decolorized through depigmenting agent so as to obtain C21 dicarboxylic acid monomethyl ester. The second step: 1 mol of C21 dicarboxylic acid monomethyl ester obtained from the first step is added drop by drop into 1.5-2 mol of polyamine which is of 140 DEG C within 0.5 hour, then the mixture liquid is processed with amidation at 170 to 200 DEG C for 3 to 6 hours; later, water and free amine are removed through vacuum distillation, so the C21 dicarboxylates polyamide epoxy curing agent is obtained. The methyl eleostearate of the invention has an 85% yield, high reactivity and low energy consumption needed in the reactions; the prepared C21 dicarboxylates polyamide epoxy curing agent and the epoxy solid products have high strength and modulus and good heat-resistant performance.

The present invention provides methods and compositions for reducing pigmentation.

The present invention relates to novel compositions, such as cosmetic compositions including myrtle extract, and use thereof in the area of depigmentation.

Topically applicable compositions useful for the depigmentation of the skin contain a fluocinolone acetonide depigmenting agent, at a concentration of from 0.0001% to 0.02% by weight, of the total weight of the composition, formulated into physiologically acceptable carrier therefor.

The use of DHEA or at least one of its biological precursors or of its metabolic derivatives in or for the manufacture of a composition for topical application to the skin, as a pigmentation regulator for the skin or its superficial growths, especially as a depigmenting and/or bleaching agent for the skin, in particular in the treatment of pigmentation marks, and as a pro-pigmenting agent for superficial body growths.

Depigmenting compositions for the skin, comprise, formulated into a physiologically acceptable medium, adapalene, at least one depigmenting agent and at least one anti-inflammatory agent, and to the pharmaceutical/cosmetic applications thereof.

The present invention relates to a compound having the formula (I), as well as a method for preparing such a compound, a cosmetic or pharmaceutic composition containing such a compound, and the use thereof as a depigmenting, lightening, bleaching or whitening agent and for treating pigmentation disorders, notably by topical application on the skin.

Embodiments of the invention are generally directed to compositions useful for reducing pigmentation in the skin. The composition may further include other depigmenting agents such as nicotinamide and its melanasome transfer-inhibiting derivatives, 3,3′-thiodipropanoic acid and its tyrosinase-inhibiting derivatives, or resorcinol and its tyrosinase-inhibiting derivatives, in a topically acceptable vehicle.

The present invention relates to a skin depigmentation composition comprising (i) at least one thiophosphate derivative and (ii) acceptable carriers for topical, oral and/or parenteral administrations to human. The present invention further relates to the cosmetic and medical treatment uses thereof for reducing skin and/or hair pigmentation.

The invention relates to a novel process for extracting collagen polypeptides from fish waste by high-valued and clean process steps. The process includes steps of extracting single-helix collagens, removing fishy smell, deodorizing, performing digestion, decoloring, desalting and spray-drying. In detail, the process includes: cleaning fish skin containing natural collagens having triple-helix tight structures, draining off, adding softened water, extracting for 3 h under controlled pH and temperature conditions, adjusting the pH value, adding diatomite, performing coarse filtration to obtain coarse filtrate that is single-helix fish skin collagens, subjecting the coarse filtrate to vacuum concentration, adding an organic solvent, mixing and stirring for 1 h, allowing the mixture to stand, extracting, performing fishy-smell removing treatment and deodorizing treatment, adding an enzyme mixture agent to perform digestion, adding a decoloring agent, stirring for decoloring for 0.5 h while controlling temperature, filtering, desalting, and performing spray-drying to obtain a white fish skin collagen polypeptide product. The process is simple in steps, convenient in operation control, high in utilization rate and good in production quality.