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cosmetics
Hair follicles represent a long-term storage of topically applied drugs and cosmetics in the skin.
      
Many kinds of compounds are known with photosensitizing properties including dyes, drugs, cosmetics, chemicals, and many natural substances.
      
Performance of such liquid chromatographic systems is illustrated with a number of practical examples including analgesic tablets, cosmetics, soft drinks, antioxidants and polyaromatic hydrocarbons.
      
Determination of free formaldehyde in the presence of donators in cosmetics by HPLC and post-column derivation
      
Analysis of preservatives in cosmetics-Methylisothiazolones
      
Antimicrobially active formulations based on 2-methyl-3(2H)-isothiazolone and 5-chloro-2-methyl-3(2H)-isothiazolone (Kathon CG, Euxyl K 100) are incorporated into manufactured cosmetics as preservatives.
      
It is conventional for the original methylisothiazolone components in cosmetics to be analyzed by reversed phase high-performance liquid chromatography after column chromatographic separation and flash chromatographic purification.
      
HPLC determination of antioxidant synergists and ascorbic acid in some fatty pharmaceuticals, cosmetics and food
      
Composition anomalies were observed which related to an overabundance of certain compounds which, in excess, are harmful to the quality of waxes intended for use in cosmetics.
      
Determination of glutathione in pharmaceuticals and cosmetics by HPLC with UV and fluorescence detection
      
Calibration curves obtained from spiked solutions of selected reference cosmetics in water show very good linearity.
      
Identification of organic colourants in cosmetics by HPLC-diode array detection
      
A capillary electrophoresis method for the separation and determination of five synthetic dyes used in pharmaceutical preparations, cosmetics and as food additives is described.
      
Headspace-gas chromatography was used to determine the contents of toxic 1,4-dioxane, ethylene oxide and ethylene glycol in ethoxylated alcohols and alkylamines, and in commercial cosmetics and washing products.
      
The method was successfully applied to the determination of ART and AA in whitening cosmetics.
      
Determination of Dexamethasone in Cosmetics by MEKC
      
A rapid and reliable method based on micellar electrokinetic capillary chromatography has been developed for the determination of dexamethasone in cosmetics.
      
Under these conditions, the analysis of dexamethasone in cosmetics was carried out within 6?min.
      
Determination of Antioxidants and Preservatives in Cosmetics by SPME Combined with GC-MS
      
A rapid and simple procedure for the determination of antioxidants and preservatives in cosmetics has been developed utilizing solid-phase microextraction combined with GC-MS.
      
 

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