毛髪素材の範疇を人工毛髪にまで広げ, そのパーマネントウェーブ評価を各種行った。その結果, 人工毛髪の場合, 水素結合架橋のみによるウェーブがかかる場合があり, ウェーブの“もち”まで考慮した場合, 人毛のウェーブの挙動と水素結合架橋による人工毛髪のウェーブの挙動とは大きく異なること, このウェーブの形状保持性の挙動は, 従来のスパイラル法やキルビー法では評価できないことが判明した。
そして, ウェーブの“もち”まで考慮したパーマネントウェーブの評価法として, スパイラル法にウェーブ保持率 (W. H.: Wave Hold) の組み合わせを考案し, 各種毛髪素材のウェーブ性の挙動の差別化が可能となった。そして, 人毛とポリアミノ酸人工毛髪は両者のパーマネントウェーブが非常に類似したものであることが確認された。

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Healthy hair catches a lot of people's attention. Because of this, the effects of some properties of scissors on hair are determined. First, hair sections cut by different methods are compared. The hair sections cut by hair-cutting and stationary scissors are prepared. These hair sections are heated by a hair drier in a manner similar to daily hair care. The hair section cut by stationary scissors is dried for a longer time than that cut by hair-cutting scissors, because of its rougher surface. This indicates that a hair section with a rough surface can not maintain moisture. From this result, it is possible to evaluate the cut hair section in terms of the rough surface area ratio. Several scissors with different properties are used for such an evaluation. The rough surface area ratios of the hair sections cut by these scissors are measured. The results indicate that the most important property of scissors is the edge radius. To examine the effect of this property on live hair, hair sections are obtained from four persons using the scissors with a large edge radius. Two months later, 40% of one hair section was damaged.

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Permanent waves belong to quasi-drugs and function as wave-forming agents or hair straighteners. However, merely having these basic function is no longer sufficient to meet today's consumers' needs. The modern permanent waves must be mild to hair and skin, have little oder, easy to use and allow easy styling.
To develop products that will fulfill these needs, it is important during the formulation stage to use objective evaluation methods which correspond to a real situation. In this report, rapid and simple-to-use instrument evaluation methods for permanent waves based on thioglycolic acid will be presented. Determinations of the effectiveness of formulations, effects on hair and oder problems will be discussed.

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From a viewpoint that disulfide bond (S-S stretching vibration) demonstrates the considerable strength of Raman activity, the (-S-S-) bond in hair treated with the permanent waving agent was studied by Raman spectroscopy. It was found that even with a singlehair a favorable Raman spectrum can be obtained for a white hair, though not for a black hair. It was confirmed by the Raman spectroscopy that the band intensity of hair, at about 510cm^-1 based on the (-S-S-) bond, reduced apparently upon treatment with the permanent waving agent 1st solution and increased again by treatment with the permanent waving agent 2nd solution to the former level.
It was feasible to examine the (-S-S-) bond of hair quantitatively by calculating a ratio of band intensity based on the (-S-S-) bond against that of amide I based on the peptide bond as the standard, (510cm^-1)/(1665cm^-1). Raman spectroscopy which requires no troublesome pretreatment has shown that the degree of reduction or degree of recovery of the (-S-S-) bond of hair obtained for a series of the cold permanent waving agent models was in good agreement with previously reported results obtained by the determination of cysteic acid residues with amino acid analysis and/or infrared spectroscopy.
It was confirmed that the waving efficiency under treatment with the permanent waving agent and the degree of reduction of the breaking strength per sectional area of hair were influenced by the degree of reduction of the (-S-S-) bond under treatment with the 1st solution, and that with increasing the degree of reduction of the (-S-S-) bond of hair under treatment with the 1st solution, the waving efficiency became higher and the degree of reduction of breaking strength per sectional area of hair became larger.

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  With the spread of hair coloring, the number of cases where dyed hairs are examined as evidential samples is on the increase.
  In forensic casework, hair color observed with the naked eye and light microscope is an important characteristic for morphological examination, while the color of dyed hair is considered of little importance and sometimes is excluded from examination because it no longer has its original color. It is experientially recognized that peculiar morphology is often observed in the cross section of dyed hairs. However, making cross sections of hair is so laborious that such observations are rarely employed in actual casework, and nothing more than noting whether hair is dyed or not is generally done. Then, for effective application of hair cross sectioning to morphological examination of dyed hairs, the sectioning method for hair samples was improved and cross section morphologies of dyed hairs made with a newly improved method were compared among Japanese females.
  It requires a lot of time, labor and skill to make cross sections of hairs with the conventional hair cross sectioning method of using a celluloid plate as an embedding material. Cross sections of hairs can be made easily using the Technovit 7100, an embedding resin system based on glycol methacrylate. Cross sections made with the ’Technovit method’ are of equal thickness and perpendicular to the hair shaft so that cross section morphologies such as a thickness and damage of cuticle, density of melanin granules and state of dyeing can be accurately appraised. In cross sections of dyed hairs collected from twenty Japanese females, several peculiar morphologies that give useful information for morphological comparison were observed.

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明治維新の断髪令が強力な政府の意思を持って施行されたなか、男子社会で断髪をまぬがれ、マゲを許されて生き残ったのが大相撲のマゲであった。以来力士たちは実生活の中で、マゲを結い、日本の伝統和風文化を実践してきた。土俵には屋形、四色の房といったしつらえ、神事における所作という演出のもと、マゲに廻しの力士たちが力と技を競い合う相撲競技は、江戸時代の趣を現代に魅力的に伝えている。その力士たちの整髪料である「梳油」には髪を漆黒に輝かせ、髪を整えるという本来の目的のほかに、特有のにおいを発するという大きな特徴がある。上は横綱から下は新弟子に至るまですべての力士が平等に用いる整髪料の香りは、いまでは多くの人に「お相撲さんのにおい」と印象付けられている。本稿は、この梳油の周辺を調査し、主に「におい」という観点から、梳油に関する歴史的、比較文化的な考察を試みたものである。

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リスクマネジメントが注目を集める中，商品・サービスのリスクに関する消費者情報の評価が非常に重要になってきた．本研究は，ある情報がどの程度リスクを強調しているかを判定するための，国際的に通用する尺度を作り上げることを目的としている．まず，リスク強調度の異なる美容・化粧品関連の30 項目の文章表現を日本語版で調査（中国語版は過去に発表済）し，両者の高い相関性を認めた．続いてリスク強調度が適当な間隔を示し，日本語と中国語で近い得点を示す6 項目を選出し，「基準スケール」とした．次に，この「基準スケール」を使用して，日本の書籍中のリスクを強調する記述表現の評価を行った．併せて，化学物質に関するリスク強調度を日中比較として得点別，種類別にまとめ，その傾向を調査した．その結果，日中ともにリスク強調度の高い書籍が多いが，日本では界面活性剤のリスクを強調するものなどが多く，中国では水銀のリスクを強調するものなどが多いことがわかった．

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