The Reaction of Oxidative Hair Dyes in Cuticle Layers

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概要

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• The mechanism of oxidative hair dyes (permanent hair color) in cuticle layers of human hair was studied. In general, it is considered that the oxidative hair dye deposits monomer into the cortex, and is polymerized with coloring in there. It was confirmed that not only cortex but also cuticle layers were dyed with the permanent hair color, through observation with the thin crosssection of the dyed hair. There were exogenous metals in the cuticle layers from tap water, etc., and the transition metals increased the dyeing and decreased the bleaching. It was thought that the activity of oxidation reaction with hydrogen peroxide was increased in the cuticle layers, and permeability to the cortex was decreased. Furthermore, TEM findings suggested that the oxidation hair dyes mainly reacted in the β-layer/δ-layer interface in the cuticle layers, unevenly distributing the metals in the β-layer of cuticular CMC.

• 日本化粧品技術者会の論文

日本化粧品技術者会 | 論文

• 加齢臭発生機序に基づく対処商品の開発
• ヒトのくせ毛の微細構造
• 触動作の特徴抽出による化粧品の使用感評価--スキンケア製品の塗布動作
• 新規カチオン性ポリマーの開発とその応用
• 顔面頬部位立体形状の加齢変化

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