[Problem] An objective of the present invention is to provide a water-in-oil emulsion sunscreen cosmetic that allows a medicinal agent to be blended into the internal phase, while having high ultraviolet protection power. [Solution] The sunscreen cosmetic of the present invention is characterized by comprising: (A) an ultraviolet absorbing agent; (B) a medicinal agent selected from the group consisting of L-ascorbic acid and derivatives thereof, tranexamic acid and derivatives thereof, alkoxysalicylic acid and derivatives thereof, glycyrrhizinic acid and derivatives thereof, and nicotinic acid and derivatives thereof; (C) a water-soluble thickener that is not sugar-derived; and (D) water.

[Problem] An objective of the present invention is to provide a water-in-oil emulsion sunscreen cosmetic that allows a medicinal agent to be blended into the internal phase, while having high ultraviolet protection power. [Solution] The sunscreen cosmetic of the present invention is characterized by comprising: (A) an ultraviolet absorbing agent; (B) a medicinal agent selected from the group consisting of L-ascorbic acid and derivatives thereof, tranexamic acid and derivatives thereof, alkoxysalicylic acid and derivatives thereof, glycyrrhizinic acid and derivatives thereof, and nicotinic acid and derivatives thereof; (C) a water-soluble thickener that is not sugar-derived; and (D) water.

A bacteriostatic composition, a preparation method therefor and a use thereof are provided. The bacteriostatic composition includes one or more of a fatty acid and/or a salt thereof, one or more of a dicarboxylic acid and/or a salt thereof, one or more of an aromatic alcohol, and one or more of an aromatic acid and/or a salt thereof. The bacteriostatic composition may be made into an aqueous solution, a water-soluble gel, a foam, a spray, an ointment, a powder, a film, a capsule, a suppository, or a tablet, and may be used for inhibiting harmful microorganisms, particularly abnormal flora within the vagina.

A multi-agent type hair treatment agent comprising a first composition containing component (A) and component (B); and a second composition containing component (C), wherein the weight ratio (H)/(C) of component (H) to component (C) in the second composition is less than 1. A hair treatment method comprising the steps of applying and rinsing the first composition to hair (i) and then applying the second composition to hair (ii). Component (A): a carboxylic acid having an inorganic value of 230 or more and 450 or less and an organic value of 50 or more and 250 or less, or a salt of the carboxylic acid Component (B): anionic surfactant Component (C): an aromatic sulfonic acid having a molecular weight of 300 or less or a salt thereof Component (H): cationic surfactant.

A multi-agent type hair treatment agent comprising a first composition containing component (A) and component (B); and a second composition containing component (C), wherein the weight ratio (H)/(C) of component (H) to component (C) in the second composition is less than 1. A hair treatment method comprising the steps of applying and rinsing the first composition to hair (i) and then applying the second composition to hair (ii). Component (A): a carboxylic acid having an inorganic value of 230 or more and 450 or less and an organic value of 50 or more and 250 or less, or a salt of the carboxylic acid Component (B): anionic surfactant Component (C): an aromatic sulfonic acid having a molecular weight of 300 or less or a salt thereof Component (H): cationic surfactant.

The present invention refers to dermocosmetic formulations for use against skin blemishes, especially melasma. The present invention minimizes or avoids the formation of melasma by acting in several stages of melanogenesis. A preferred embodiment of the invention refers to dermocosmetic formulations that act in several stages of melanogenesis, preferably, in the gene expression of tyrosinase-related proteins (TYRP-1 and TYRP-2) and Endothelin-1 (ET-1). Another embodiment of the invention refers to the cosmetic composition containing a combination of active ingredients that act on the gene expression of tyrosinase-related proteins (TYRP-1 and TYRP-2) and Endothelin-1 (ET-1). In another preferred embodiment of the invention, the use of said cosmetic composition to combat melasma is described.

The present invention refers to dermocosmetic formulations for use against skin blemishes, especially melasma. The present invention minimizes or avoids the formation of melasma by acting in several stages of melanogenesis. A preferred embodiment of the invention refers to dermocosmetic formulations that act in several stages of melanogenesis, preferably, in the gene expression of tyrosinase-related proteins (TYRP-1 and TYRP-2) and Endothelin-1 (ET-1). Another embodiment of the invention refers to the cosmetic composition containing a combination of active ingredients that act on the gene expression of tyrosinase-related proteins (TYRP-1 and TYRP-2) and Endothelin-1 (ET-1). In another preferred embodiment of the invention, the use of said cosmetic composition to combat melasma is described.

The present invention is direct to a hair care composition comprising from about 8 to about 17% of one or more surfactants; from about 0.1-0.25% of salicylate salts or acids; from about 0.1-0.25% of benzoate salts or acids wherein there is a weight ratio of about 1:1 to 2.5:1 for the salicylate salts or acids to sodium benzoate salts or acids.

The present invention is direct to a hair care composition comprising from about 8 to about 17% of one or more surfactants; from about 0.1-0.25% of salicylate salts or acids; from about 0.1-0.25% of benzoate salts or acids wherein there is a weight ratio of about 1:1 to 2.5:1 for the salicylate salts or acids to sodium benzoate salts or acids.

The invention is directed to a composition suitable for topical application that comprises a naturally derived preservative having benzoic acid or a derivative thereof. The composition is stable when preserved with the naturally derived preservative and when at a pH that is above the natural pH of skin to as high as 7.25.