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|Section2= |Section6= |Section7= |Section8= }} Panthenol (pantothenol) is the alcohol analog of pantothenic acid (vitamin B5), and is thus a provitamin of B5. In organisms it is quickly oxidized to pantothenate. Panthenol is a highly viscous transparent liquid at room temperature, but salts of pantothenic acid (for example sodium pantothenate) are powders (typically white). It is soluble in water, alcohol and propylene glycol, soluble in ether and chloroform, and slightly soluble in glycerin. Panthenol comes in two enantiomers, D and L. Only D-panthenol (''dexpanthenol'') is biologically active, however both forms have moisturizing properties. For cosmetic use, panthenol comes either in D form, or as a racemic mixture of D and L (DL-panthenol). Panthenol's expanded chemical formula is: HO-CH2-C(CH3)2-CH(OH)-CONH-CH2CH2CH2-OH. ==Uses== In cosmetics and personal-care products, panthenol is a humectant, emollient, and moisturizer. It binds to the hair shaft readily; so, it is a common component of commercial shampoos and hair conditioners (in concentrations of 0.1-1.0%). It coats the hair and seals its surface, lubricating the hair shaft and giving it a shiny appearance. It is also recommended by many tattoo artists as a post-tattooing moisturising cream. Panthenol draws moisture from the atmosphere and readily binds to water molecules. When applied to the hair panthenol will help to moisturize it and give it a shine and gloss. For this reason it has become a very popular ingredient in shampoos and conditioners. In ointments, panthenol is an effective skin penetrator.〔 It is sometimes mixed with allantoin, in concentrations of up to 2-5%, and is used for treatment of sunburns, mild burns and minor skin disorders. It improves hydration, reduces itching and inflammation of the skin, and accelerates epidermal wounds' rate of healing. If ingested, panthenol is metabolized to pantothenic acid. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Panthenol」の詳細全文を読む スポンサード リンク
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