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KMID : 0604520140400020203
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Journal of the Society of Cosmetic Scientists of Korea
2014 Volume.40 No. 2 p.203 ~ p.214
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A Study on Contact Dermatitis-Causing Substances Concentration in Commercial Oxidative Hair-Coloring Products
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Na Young-Ran
Koo Hee-Soo
Lee Seung-Ju
Kang Jung-Mi
Jin Sung-Hyun
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Abstract
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We measured the contact dermatitis-causing substances concentrations in 28 commercial oxidative hair-coloring products. This study was aimed to provide the fundamental data about oxidative hair-coloring products. We selected 10 oxidation dyes (p-phenylenediamine, toluene-2,5-diamine, m-phenylenediamine, nitro-p-phenylenediamine, p-amino-phenol, m-aminophenol, o-aminophenol, p-methylaminophenol, N,N’-bis(2-hydroxyethyl)-p-phenylenediamine sulfate, 2-methyl-5-hydroxyethylaminophenol) and 4 heavy metal (nikel; Ni, chromium; Cr, cobalt; Co, copper; Cu) as contact dermatitis-causing substances. To identify 10 oxidation dyes, hexane-2% sodium sulfite was used for the rapid and sim-ple extraction and ultra performance liquid chromatography (UPLC) analysis was used for simultaneous analysis in 12 minutes. 10 oxidative dyes were detected as indicated on the product packaging and each concentration was lower than prescribed upper concentration limit by pharmaceutical manufacturing standards. And we analysed inductively coupled plasma-optical emission spectrophotometer (ICP-OES) for content search of heavy metal after microwave digestion. The heavy metal average concentration in oxidative hair-coloring products was 0.572 μg/g for Ni, 3.161 μg/g for Cr, 2.029 μg/g for Co, 0.420 μg/g for Cu, respectively. The average of concentration in powder type (henna) was higher than those of other foam and cream type oxidative hair-coloring products as follows; 1.800 μg/g for Ni, 10.127 μg/g for Cr, 7.082 μg/g for Co, 1.451 μg/g for Cu. Hair coloring products were classified into the six colors - black, dark brown, brown, dark brown, light brown, red brown and analyzed. Brown color had the highest average concentration of Co and the others had the highest average concentration of Cr.
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KEYWORD
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Oxidative hair-coloring products, Contact dermatitis, Oxidation dyes, Heavy metal
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