JP2004123682A

JP2004123682A - Color pigment and makeup cosmetic

Info

Publication number: JP2004123682A
Application number: JP2002294298A
Authority: JP
Inventors: Momoko Sasachi; 雀地　桃子; Masaru Baba; 馬場　優; Haruko Yasumori; 安森　春子; Takamitsu Imai; 今井　隆充; Masafumi Shibata; 柴田　雅史
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2002-10-07
Filing date: 2002-10-07
Publication date: 2004-04-22

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a color pigment to be formulated to a makeup cosmetic to impart the makeup cosmetic with a three-dimensional effect without lowering the brightness of the cosmetic, and prepare the makeup cosmetic having bright appearance and giving three-dimensional effect to the skin. <P>SOLUTION: The color pigment is produced by applying (A) fine particles of iron oxide having an average particle diameter of 1-50 nm to (B) a flaky powder generating colored interference light. The makeup cosmetic contains the color pigment. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、メイクアップ化粧料に配合すると、化粧料の鮮やかさを損なうことなく立体感を付与できる着色顔料、及び前記着色顔料を含有するメイクアップ化粧料に関する。
【０００２】
【従来の技術】
近年、唇や瞼、頬、顔全体に塗布した際、立体感を感じさせることでメイクアップ効果を向上させる試みがなされている。例えば、口紅、アイシャドウ、頬紅、ファンデーション等の化粧料に、見る角度で色調が微妙に変化する性質を付与することが検討されている。
【０００３】
特許文献１には、干渉多層構造を有する角度依存性顔料をメイクアップ化粧品に配合することによって、塗布した際に見る角度による色差を顕著にし、立体感を感じやすくした化粧料が開示されている。しかしながら、このような角度依存性顔料は、干渉色が鮮やかであるために立体感を付与する効果は強いものの、顔料自体の色（顔料の粉体色）は白さが強いために、口紅、アイシャドウ等のようなポイントメイクアップ化粧料に配合した際には化粧料を白くくすませてしまい、化粧料の鮮やかさを損なってしまうという傾向にあった。
【０００４】
一方、酸化鉄被覆粉体としては、特許文献２に、立体感の付与を目的にしていないが、平均粒子径６０〜２００ｎｍの微粒子酸化鉄を被覆し、干渉色が青色乃至緑色で反射干渉色が赤色を呈し外観色が肌色の酸化鉄被覆雲母チタンを配合した口紅用組成物が開示されている。また、特許文献３には、平均粒子径６０〜１５０ｎｍの微粒子酸化鉄を雲母チタン上に被覆したことを特徴とする着色雲母チタンが開示されている。しかしながら、これらの酸化鉄被覆雲母チタンは、化粧料を白くくすませることは抑制できるものの、干渉色の鮮やかさを妨げてしまうため、特に色の鮮やかさが最も重要である口紅、アイシャドウ等のようなポイントメイクアップ化粧料に使用した場合は、立体感を向上させるのに不充分である。
【０００５】
このように、特に色の鮮やかさが最も重要である口紅、アイシャドウ等のメイクアップ化粧料に用いても、化粧料を白くくすませず、鮮やかさを損なうことなく、立体感を付与させることができる着色顔料は存在しなかった。
【特許文献１】
特開２００２−１５４９２７号公報
【特許文献２】
特開２００１−２８８０３９号公報
【特許文献３】
特開平８−８１３３４号公報
【０００６】
【発明が解決しようとする課題】
本発明の目的は、メイクアップ化粧料に配合すると、化粧料の鮮やかさを損なうことなく立体感を付与できる着色顔料、及び鮮やかで立体感を付与できるメイクアップ化粧料を提供することにある。
【０００７】
【課題を解決するための手段】
発明者らは、従来の微粒子酸化鉄（平均粒子径６０〜２００ｎｍ）よりも平均粒子径が小さい１〜５０ｎｍの微粒子酸化鉄で干渉色を有する板状粉体の表面を被覆することにより、化粧料を白くくすませず、鮮やかさを損なうことなく立体感を付与できる着色顔料を得られることを見出した。
【０００８】
すなわち、本発明は、平均粒子径１〜５０ｎｍの微粒子酸化鉄（Ａ）を有色の干渉光を発する板状粉体（Ｂ）上に被覆してなる着色顔料、及び、前記着色顔料を含有するメイクアップ化粧料を提供するものである。
【０００９】
【発明の実施の形態】
本発明に係る着色顔料は、平均粒子径１〜５０ｎｍの微粒子酸化鉄（Ａ）を有色の干渉光を発する板状粉体（Ｂ）上に被覆してなるものである。
【００１０】
本発明の着色顔料は、有色の干渉光を発する板状粉体（Ｂ）を平均粒子径１〜５０ｎｍの微粒子酸化鉄（Ａ）で被覆することにより、板状粉体（Ｂ）の干渉色がより強くなり、化粧料に配合した際に、化粧料を白くくすませることを抑制でき、鮮やかさを損なうことなく立体感を付与できる。
【００１１】
本発明の着色顔料に用いられる微粒子酸化鉄（Ａ）の平均粒子径は、酸化鉄を被覆した効果を発揮させる点から１ｎｍ以上とし、更に５ｎｍ以上、特に１０ｎｍ以上とすることが好ましい。また、着色顔料の外観が暗くならず、化粧料の鮮やかさを損なわない点から、５０ｎｍ以下とし、更に４０ｎｍ以下、特に３０ｎｍ以下とすることが好ましい。ここで、着色顔料表面に存在する酸化鉄の平均粒子径は、着色顔料の割断面を透過型電子顕微鏡（ＴＥＭ）（例えば、超分解能透過型電子顕微鏡（日立Ｈ−９０００ＵＨＲ））により観察し、視野内２０個の酸化鉄の粒子径を平均することにより求めた。
【００１２】
微粒子酸化鉄（Ａ）の酸化状態としては、特に制限はないが、赤酸化鉄（ベンガラ）の状態であることが、干渉色が鮮やかになる点から好ましい。
【００１３】
本発明の着色顔料に用いられる有色の干渉光を発する板状粉体（Ｂ）とは、少なくとも２層以上の薄膜の多層構造を有することにより、特定の波長光に対してフィルター効果を有して干渉光を発する板状粉体のうち、干渉光が白色でないものをいい、各層の厚さに応じて干渉光が異なるものである。
【００１４】
有色の干渉光を発する板状粉体（Ｂ）としては、化粧品原料として安定に配合できる点から、酸化チタンを被覆したマイカ、金雲母、及びガラス末；酸化チタン及びシリカを多重に被覆したマイカ、金雲母、及びガラス末から選択される１種以上であることが好ましい。
【００１５】
有色の干渉色を有する板状粉体（Ｂ）の干渉色としては、特に制限はなく、赤、オレンジ、黄、緑、青、青紫、紫のどの色相でも良い。
【００１６】
有色の干渉色を有する板状粉体（Ｂ）の平均粒子径は、特に制限はないが、干渉色の鮮やかさを出す点から、１μｍ〜３０００μｍであることが好ましい。更に１μｍ〜２００μｍ、特に１μｍ〜３０μｍであることが、ぎらぎらとした光輝感が少なく化粧料に自然な立体感を付与する点から好ましい。板状粉体は長径をもって粒子径とし、一般的な粉体用の粒子径測定装置で計測することができる。ここで、平均粒子径は、コールターカウンター（例えば、ＺＢＩ（ベックマン・コールター（株））を用いて計測した値である。
【００１７】
前記微粒子酸化鉄（Ａ）と前記板状粉体（Ｂ）の重量比（Ａ：Ｂ）は、特に制限はないが、酸化鉄を被覆した効果を発揮させる点から０．５：９９．５以上であることが好ましく、また、有色の干渉光を発する板状粉体（Ｂ）の干渉色を損なわない点から２０：８０以下であることが好ましく、１：９９〜１５：８５であることが更に好ましい。特に、黄色等明度の高い干渉色の顔料を得ることを目的とする場合には、酸化鉄の吸収が強くなりすぎないように３：９７〜１０：９０であることが好ましい。
【００１８】
本発明の板状粉体（Ｂ）を微粒子酸化鉄（Ａ）で被覆した着色顔料の平均粒子径は、特に制限はないが、発色が良く、ぎらつき感を与えない点から、１μｍ〜３０００μｍ、更に１μｍ〜２００μｍ、より更に１μｍ〜３０μｍ、特に１μｍ〜１４μｍであることが好ましい。ここで、平均粒子径は、板状粉体（Ｂ）と同様に計測した値である。
【００１９】
着色顔料は上記の条件を満たしていれば、白くすみをおこさずに、立体感を付与する効果を有する。
【００２０】
本発明の着色顔料は、さらに、入射光２５°のマンセル彩度が８以上であり、入射光２５°と入射光７５°の条件で測定した場合の色差が２０以上の光学特性を有することが、立体感を付与する効果の点で特に好ましい。ここで、マンセル彩度は、着色顔料とニトロセルロースラッカーを１：１５の重量比率で混合し、１００μのアプリケータを用いて無色透明フィルム上に塗布し、常温で乾燥させた後、これを黒い紙の上に置き、面の法線（０°方向）を受光位置とし入射方向を２５°として、測色装置（分光測色計ＣＭ−５１２ｍ３：ミノルタ（株））を用いて分光反射率を測定した値である。また、色差（ΔＥ）は、マンセル彩度と同様に調製したサンプルを入射方向を２５°または７５°として分光反射率の測定した際に、ＣＩＥ１９７６（Ｌ＊ａ＊ｂ＊）表色系による色彩表示で測定した２つの色値、Ｌ_１ａ_１ｂ_１（入射光２５°）とＬ_２ａ_２ｂ_２（入射光７５°）の差であり、次式：
ΔＥ＝｛（Ｌ_１−Ｌ_２）^２＋（ａ_１−ａ_２）^２＋（ｂ_１−ｂ_２）^２｝^１／２
により算出される。
【００２１】
本発明の着色顔料を製造する方法としては、被覆した酸化鉄の平均粒子径が１ｎｍ〜５０ｎｍとなるような製造方法であれば特に制限はないが、以下の製造方法を用いると得られる着色顔料の干渉色が鮮やかになるという点で特に好ましい。　塩化第一鉄、塩化第二鉄、硫酸第一鉄、硫酸第二鉄、シュウ酸第一鉄、シュウ酸第二鉄アンモニウム、硫酸第二鉄アンモニウム、リン酸第二鉄、クエン酸第二鉄、乳酸第一鉄、フマル酸鉄から選ばれる鉄塩の水溶液をｐＨ１〜２．９に調整し、板状粉体を添加した後８０℃〜９５℃で４〜８時間加熱分散し、有色の干渉光を発する板状粉体（Ｂ）の表面に水酸化鉄を析出させる。これをろ過・水洗洗浄し４００℃〜１０００℃で焼成することにより着色顔料を得る。
【００２２】
干渉色を鮮明とするために、平均粒子径１〜５０ｎｍの微粒子酸化鉄を干渉顔料表面に析出させる点から、ｐＨ１〜２．９の強酸性条件下で加水分解反応を行うことが好ましく、ｐＨ２．５以下で加水分解反応を行うことが特に好ましい。
【００２３】
板状粉体（Ｂ）と上記鉄塩の水溶液の重量比は、粉体１００部に対し、１０００部〜３０００部、さらに１２００部〜２０００部であることが、干渉色を鮮明にする点で好ましい。
【００２４】
また、酸化鉄微粒子の凝集を防止し、鮮明な酸化鉄の発色を得て、鮮明な干渉色及び外観色を有する着色顔料を得る点から、焼成温度は６００℃〜９００℃であることが好ましく、６００℃〜８００℃であることが更に好ましい。
【００２５】
得られた着色顔料は、必要に応じて、メチルハイドロジェンポリシロキサン処理、α−モノアルコキシポリジメチルシロキサン処理、パーフルオロアルキルリン酸処理、アルキルシリル化処理、シリカ処理、金属石鹸処理、Ｌ−ラウロイルリシン処理等の表面処理を施しても良い。
【００２６】
以上のように得られる本発明の着色顔料は、化粧料の鮮やかさを損なうことなく立体感を付与できるため、化粧料用の顔料として好適に用いることができる。
【００２７】
本発明のメイクアップ化粧料は、前記本発明に係る着色顔料を含有することを特徴とする。
【００２８】
本発明に係る着色顔料は、化粧料中に単独又は２種以上を組み合わせて用いることができる。化粧料中における本発明に係る着色顔料の含有量は、剤型等により異なり特に制限されないが、立体感を感じやすくする点から、全組成中に０．０５重量％以上であることが好ましく、さらに０．１重量％以上、特に０．５重量％以上であることが好ましい。また、化粧料の鮮やかさを妨げない点から、全組成中に８０重量％以下であることが好ましい。
【００２９】
特に、口紅、リップグロス等の油性化粧料に用いる場合には、本発明に係る着色顔料の含有量は、全組成中に０．０５〜４０重量％、特に０．０５〜２０重量％であることが好ましい。また、アイシャドウ、チーク等の粉体化粧料に用いる場合には、本発明に係る着色顔料の含有量は、全組成中に０．０５〜８０重量％、特に０．０５〜６０重量％であることが好ましい。
【００３０】
本発明の化粧料には、前記本発明に係る着色顔料のほか、通常の化粧料に配合される成分、例えば、他の着色顔料、粉体、保型成分、油性成分、保湿剤等を、本発明の効果を損なわない範囲で適宜配合することができる。
【００３１】
他の着色顔料としては、例えば、赤色２０１号、赤色２０２号、赤色１０４号（１）アルミニウムレーキ、赤色２１８号、赤色２２３号、黄色４号アルミニウムレーキ、黄色５号アルミニウムレーキ、黄色４０１号、青色１号アルミニウムレーキ、青色４０４号等の有機顔料、酸化鉄、酸化チタン、酸化亜鉛、シリカ、金、銀、紺青、群青等の無機顔料等を用いることができる。
【００３２】
粉体としては、例えば、シリカ、ＰＭＭＡ、ポリメチルシルセスキオキサン、ウレタンパウダー等の球状粉体、ラウロイルリジン、シリカ、硫酸バリウム、窒化ホウ素等板状粉体等を用いることができる。
【００３３】
保型成分としては、例えば、ポリエチレンワックス、マイクロクリスタリンワックス、セレシン、カルナウバロウ、キャンデリラワックス、水添ホホバ油等の固体脂、ショ糖脂肪酸エステル等のゲル化剤等を用いることができる。
【００３４】
油性成分としては、例えば、イソステアリン酸プロピル、イソノナン酸イソトリデシル等のモノエステル、ジカプリン酸ネオペンチルグリコール、リンゴ酸ジイソステアリル等のジエステル、オクチルドデカノール等の高級アルコール、重質流動イソパラフィン、イソパラフィン、イソステアリン酸コレステリル、Ｎ−ラウロイル−グルタミン酸ジ（コレステリル・オクチルドデシル）、イソステアリン酸フィトステリル、マカデミアナッツ油フィトステリル等のステロール誘導体、ジメチルポリシロキサン、メチルフェニルポリシロキサン等のシリコーン油等を用いることができる。
【００３５】
保湿剤としては、例えば、グリセリン、１，３−ブチレングリコール、等の多価アルコール、セラミド類、グリチルレチン酸ステアリル等の成分を用いることができる。
【００３６】
本発明の化粧料には、他にも、通常の化粧料に配合される成分、例えば、界面活性剤、パーフルオロポリエーテル、皮膜形成剤、紫外線吸収剤、無機金属塩類、有機金属塩類、アルコール類、キレート剤、ｐＨ調整剤、防腐剤、酸化防止剤、増粘剤、薬効成分、水、香料等を、本発明の効果を損なわない範囲で適宜配合することができる。
【００３７】
本発明のメイクアップ化粧料は、上記各材料を用いて常法に従って製造することができ、油性固形型、粉末固形型、高含油粉末固形型、油分散型、水分散型、油中水型乳化液、水中油型乳化液等の任意の剤型とすることができる。
【００３８】
本発明のメイクアップ化粧料としては、口紅、頬紅、アイシャドウ、マスカラ、アイライナー、ファンデーション等のメイクアップ化粧料とすることができるが、本発明に係る着色顔料の化粧料の鮮やかさを損なうことなく立体感を付与できるという効果を発揮しやすいという点から、特に、口紅、頬紅、アイシャドウ、マスカラ、アイライナー等のポイントメイクアップ化粧料とすることが好ましい。
【００３９】
【実施例】
（評価方法）
１．酸化鉄の平均粒子径
着色顔料表面に存在する酸化鉄の平均粒子径は、着色顔料の割断面を透過型電子顕微鏡（ＴＥＭ）（超分解能透過型電子顕微鏡：日立Ｈ−９０００ＵＨＲ）により観察し、視野内２０個の酸化鉄の粒子径を平均することにより求めた。
【００４０】
２．粉体色
直径３０ｍｍのガラス製セルに粉体を入れ、目視で色を観察した。
【００４１】
３．干渉色
サンプル調製：着色顔料とニトロセルロースラッカーを１：１５の重量比率で混合し、１００μのアプリケータを用いて透明フィルム上に塗布し、常温で乾燥させた。
【００４２】
評価：サンプルを黒い紙の上に置き、目視にて干渉色を観察した。
【００４３】
４．入射光２５°の条件下のマンセル彩度
サンプル調製：着色顔料とニトロセルロースラッカーを１：１５の重量比率で混合し、１００μのアプリケータを用いて透明フィルム上に塗布し、常温で乾燥させた。
【００４４】
測定：サンプルを黒い紙の上に置き、面の法線（０°）を受光位置とし、入射方向を２５°として、測色装置（分光測色計ＣＭ−５１２ｍ３：ミノルタ（株））を用いて分光反射率を測定した。
【００４５】
５．入射光２５°と入射光７５°の条件下の色差
サンプル調製：着色顔料とニトロセルロースラッカーを１：１５の重量比率で混合し、１００μのアプリケータを用いて透明フィルム上に塗布し、常温で乾燥させた。
【００４６】
測定：サンプルを黒い紙の上に置き、面の法線（０°）を受光位置とし、入射方向を２５°または７５°として、測色装置（分光測色計ＣＭ−５１２ｍ３：ミノルタ（株））を用いて分光反射率を測定した。色差（ΔＥ）は、ＣＩＥ１９７６（Ｌ＊ａ＊ｂ＊）表色系による色彩表示で測定した２つの色値、Ｌ_１ａ_１ｂ_１（入射光２５°）とＬ_２ａ_２ｂ_２（入射光７５°）を用いて、次式：
ΔＥ＝｛（Ｌ_１−Ｌ_２）^２＋（ａ_１−ａ_２）^２＋（ｂ_１−ｂ_２）^２｝^１／２
により算出した。
【００４７】
（実施例１，２、及び比較例１〜７：着色顔料）
実施例１，２及び比較例１，２は下記のように製造し、また、比較例３〜７は市販品を用いた。製造して得られた実施例１，２及び比較例１，２については、着色顔料表面に存在する酸化鉄の平均粒子径を求めた。更に、実施例１，２及び比較例１〜７の各着色顔料の発色特性評価を行った。
【００４８】
（実施例１）干渉色を示す赤色着色顔料
赤色干渉色を示す雲母チタン（平均粒子径６μｍ）（製法は特開平７−３１６４６４記載）１００部を水１５００部に分散させ、さらに硫酸第二鉄２１．８部を添加し、ｐＨ１に調整して９０℃で６時間保持した。水洗、濾過、乾燥後７００℃で３時間焼成処理を行い、干渉色を示す鮮明な赤色着色顔料を得た。
【００４９】
得られた顔料表面に存在する酸化鉄の平均粒子径は２０ｎｍであった。
【００５０】
（実施例２）干渉色を示す黄色着色顔料
橙色干渉色を示す雲母チタン（平均粒子径１２μｍ）（製法は特開平７−３１６４６４記載）１００部を水２０００部に分散させ、さらに硫酸第二鉄１６．４部を添加し、これをｐＨ２．４になるように調整して９０℃で６時間保持した。水洗、濾過、乾燥後７００℃で３時間焼成処理を行い、干渉色を示す鮮明な黄色着色顔料を得た。
【００５１】
得られた顔料表面に存在する酸化鉄の平均粒子径は約４０ｎｍであった。
【００５２】
（比較例１）干渉色を示す赤色着色顔料
赤色干渉色を示す雲母チタン（平均粒子径６μｍ）（製法は特開平７−３１６４６４記載）１００部を水１０００部に分散させ、さらに硫酸第二鉄２１．８部を添加し、ｐＨ４になるように調製して９０℃で６時間保持した。水洗、濾過、乾燥後７００℃で３時間焼成処理を行い、干渉色を示す赤色着色顔料を得た。
【００５３】
得られた顔料表面に存在する酸化鉄の平均粒子径は約６０ｎｍであった。
【００５４】
（比較例２）干渉色を示す赤色着色顔料
赤色干渉色を示す雲母チタン（平均粒子径３５μｍ）（製法は特開平７−３１６４６４記載）１００部を水７００部に分散させ、さらに硫酸第二鉄２１．８部を添加し、ｐＨ６になるように調製して９０℃で６時間保持した。水洗、濾過、乾燥後７００℃で３時間焼成処理を行い、赤色着色顔料を得た。
【００５５】
得られた顔料表面に存在する酸化鉄の平均粒子径は２００ｎｍであった。
【００５６】
＜発色特性評価＞
それぞれの着色顔料を用いて、粉体色（顔料自体の色）、干渉色、入射光２５°の条件下のマンセル彩度、入射光２５°と入射光７５°の条件下の色差について、評価した。
【００５７】
各着色顔料の評価結果を第１表に示す。
【００５８】
【表１】

【００５９】
表１に示された結果から、実施例１、２は、いずれもマンセル彩度が８以上、且つ、色差が２０以上であり、鮮やかさを有し、見る角度による色の変化が顕著な着色顔料であった。被覆した酸化鉄の平均粒子径が６０ｎｍである比較例１、被覆した酸化鉄の平均粒子径が２００ｎｍである比較例２は、いずれもマンセル彩度が８未満、且つ、色差が２０未満で、鮮やかさに劣り、見る角度による色の変化にも劣る着色顔料であった。一方、比較例３の市販品酸化鉄は干渉色がなく、鮮やかさも劣るものであった。また、比較例４、５の市販品雲母チタン及び比較例６の市販品シリカ・チタン多重被覆雲母チタンは、粉体色が白く、鮮やかさに劣るものであった。比較例７の市販品シリカ・酸化鉄被覆アルミニウム末は、粉体色がくすんでいるものであった。
【００６０】
（実施例３，４、比較例８〜１３：口紅）
第２表にしたがって、実施例１、２を用いて実施例３、４の口紅を以下のように製造した。また、比較例１、２で得られた着色顔料、及び市販品酸化鉄、市販品雲母チタン、市販品シリカ・チタン多重被覆雲母チタン、シリカ・酸化鉄被覆アルミニウム末を用いて、実施例１と同様に比較例８〜１３の口紅を製造した。更に得られた口紅を使用して評価した結果を合わせて第２表に示す。
【００６１】
＜製法＞
成分（１１）〜（１６）を成分（８）の一部に加え、ローラーで処理した（顔料部）。成分（１）〜（１０）を加熱融解した後、顔料部及び成分（１７）〜（２４）を加え、ホモミキサーで均一に分散した。分散後、型に流し込み急冷し、スティック状とした。
【００６２】
（評価）
１０名の専門パネラーが、該口紅を実際に使用し、塗布時の白くすみのなさ、塗布の鮮やかさ、仕上がりの立体感について、以下の基準により評価した。
◎：１０名中９名以上が良好と評価
○：１０名中７〜８名が良好と評価
△：１０名中４〜６名が良好と評価
×：１０名中３名以下が良好と評価
【００６３】
【表２】

【００６４】
第２表に示された結果から、実施例３、４は、いずれも塗布時の白くすみがなく、塗布が鮮やかであり、仕上がりに立体感がある化粧料であった。一方、本発明の着色顔料の代わりに市販品酸化鉄を用いた比較例８は、仕上がりに立体感がなかった。本発明の着色顔料の代わりに比較例１，２の着色顔料を用いた比較例９、１０は、仕上がりの立体感に劣るものであった。また、本発明の着色顔料の代わりに比較例４の市販品雲母チタンを用いた比較例１１は、白くくすみ、仕上がりの鮮やかさ及び立体感に劣るものであった。本発明の着色顔料の代わりに比較例６の市販品シリカ・チタン多重被覆雲母チタン及び比較例７のシリカ・酸化鉄被覆アルミニウム末を用いた比較例１２、１３は、白くくすみ、仕上がりの鮮やかさに劣るものであった。
【００６５】
（実施例５：リップグロス）
第３表に示す組成に従って、成分（１６）を成分（８）の一部に加え、３本ロールミルで処理した（顔料部）。成分（１）〜（１４）を加熱融解した後、顔料部及び成分（１５）、（１７）〜（２１）を加え、ディスパーで均一に分散した。分散後、型に流し込み急冷した。
【００６６】
【表３】

【００６７】
実施例５のリップグロスは、塗布時の白くくすまず、仕上がりの鮮やか及び立体感が良好なリップグロスであった。
【００６８】
【発明の効果】
本発明の着色顔料は、有色の干渉光を発する板状粉体（Ｂ）を平均粒子径１〜５０ｎｍの微粒子酸化鉄（Ａ）で被覆することにより、板状粉体（Ｂ）の干渉色がより強くなり、化粧料に配合した際に、化粧料を白くくすませることを抑制でき、鮮やかさを損なうことなく立体感を付与できる。
【００６９】
本発明のメイクアップ化粧料は、前記本発明に係る着色顔料を含有することにより、化粧料の鮮やかさを損なうことなく立体感を付与できる。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a color pigment capable of imparting a three-dimensional effect without impairing the vividness of the cosmetic when mixed with the makeup cosmetic, and a makeup cosmetic containing the color pigment.
[0002]
[Prior art]
In recent years, attempts have been made to improve the makeup effect by giving a three-dimensional effect when applied to the lips, eyelids, cheeks, and the entire face. For example, it has been studied to impart to cosmetics such as lipstick, eyeshadow, blusher, foundation and the like the property that the color tone changes slightly depending on the viewing angle.
[0003]
Patent Literature 1 discloses a cosmetic in which an angle-dependent pigment having an interference multilayer structure is blended into a makeup cosmetic so that the color difference depending on the viewing angle when applied is remarkable and a three-dimensional effect is easily felt. . However, although such an angle-dependent pigment has a strong effect of giving a three-dimensional effect due to the vivid interference color, the color of the pigment itself (pigment powder color) is strong in white, so that lipstick, When blended in a point makeup cosmetic such as eye shadow or the like, the cosmetic tends to be whitened, and the vividness of the cosmetic tends to be impaired.
[0004]
On the other hand, as the iron oxide-coated powder, Patent Document 2 does not aim to give a three-dimensional effect, but coats fine iron oxide particles having an average particle diameter of 60 to 200 nm, and has an interference color of blue to green and a reflection interference color. A lipstick composition containing iron oxide-coated mica titanium having a red color and a flesh color appearance is disclosed. Patent Document 3 discloses a colored titanium mica characterized in that mica titanium is coated with fine iron oxide particles having an average particle diameter of 60 to 150 nm. However, although these iron oxide-coated mica titanium can suppress the whitening of the cosmetic, they hinder the vividness of the interference color, so that the vividness of the color is most important especially for lipsticks and eye shadows. When used in such point makeup cosmetics, it is insufficient to improve the three-dimensional effect.
[0005]
Thus, even when used for makeup cosmetics such as lipsticks and eye shadows, in which the vividness of the color is most important, it does not whiten the cosmetics and imparts a three-dimensional effect without impairing the vividness. There were no colored pigments that could be found.
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2002-154927 [Patent Document 2]
JP 2001-288039 A [Patent Document 3]
JP-A-8-81334
[Problems to be solved by the invention]
An object of the present invention is to provide a coloring pigment capable of imparting a three-dimensional effect without impairing the vividness of the cosmetic, and a makeup cosmetic capable of imparting a vivid and three-dimensional effect when incorporated into a makeup cosmetic.
[0007]
[Means for Solving the Problems]
By coating the surface of a plate-like powder having an interference color with 1 to 50 nm fine particle iron oxide having an average particle diameter smaller than that of conventional fine particle iron oxide (average particle diameter 60 to 200 nm), It has been found that a coloring pigment capable of giving a three-dimensional effect without impairing the color of the material and without impairing the vividness can be obtained.
[0008]
That is, the present invention contains a color pigment obtained by coating a fine particle iron oxide (A) having an average particle diameter of 1 to 50 nm on a plate-like powder (B) that emits colored interference light, and the color pigment. It provides makeup cosmetics.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
The colored pigment according to the present invention is obtained by coating a fine particle iron oxide (A) having an average particle diameter of 1 to 50 nm on a plate-like powder (B) emitting colored interference light.
[0010]
The colored pigment of the present invention is obtained by coating a plate-like powder (B) emitting colored interference light with fine iron oxide particles (A) having an average particle diameter of 1 to 50 nm, thereby obtaining an interference color of the plate-like powder (B). Can be suppressed, and when blended into a cosmetic, the cosmetic can be prevented from being whitened, and a three-dimensional effect can be imparted without impairing the vividness.
[0011]
The average particle diameter of the fine iron oxide particles (A) used in the coloring pigment of the present invention is preferably at least 1 nm, more preferably at least 5 nm, particularly preferably at least 10 nm, from the viewpoint of exhibiting the effect of coating with iron oxide. Further, from the viewpoint that the appearance of the color pigment does not darken and does not impair the vividness of the cosmetic, the thickness is preferably 50 nm or less, more preferably 40 nm or less, and particularly preferably 30 nm or less. Here, the average particle diameter of the iron oxide present on the surface of the color pigment can be determined by observing the fracture surface of the color pigment with a transmission electron microscope (TEM) (for example, a super-resolution transmission electron microscope (Hitachi H-9000UHR)). It was determined by averaging the particle diameters of 20 iron oxides in the visual field.
[0012]
The oxidation state of the particulate iron oxide (A) is not particularly limited, but is preferably a state of red iron oxide (red iron oxide) from the viewpoint that the interference color becomes vivid.
[0013]
The plate-like powder (B) which emits colored interference light used in the coloring pigment of the present invention has a multilayer structure of at least two or more thin films, thereby having a filter effect on light of a specific wavelength. Among the plate-like powders that emit interference light, the interference light is not white, and the interference light varies depending on the thickness of each layer.
[0014]
Examples of the plate-like powder (B) that emits colored interference light include mica coated with titanium oxide, phlogopite, and glass powder; mica coated with titanium oxide and silica in multiple layers because they can be stably blended as cosmetic raw materials. , Phlogopite, and glass powder are preferred.
[0015]
The interference color of the plate-like powder (B) having a colored interference color is not particularly limited, and may be any hue of red, orange, yellow, green, blue, violet, and purple.
[0016]
The average particle size of the plate-like powder (B) having a colored interference color is not particularly limited, but is preferably 1 μm to 3000 μm from the viewpoint of obtaining a vivid interference color. Further, the thickness is preferably from 1 μm to 200 μm, particularly preferably from 1 μm to 30 μm, from the viewpoint of giving the cosmetics a natural three-dimensional effect with less glare. The plate-like powder has a long diameter as a particle diameter, and can be measured by a general powder particle diameter measuring device. Here, the average particle diameter is a value measured using a Coulter counter (for example, ZBI (Beckman Coulter, Inc.)).
[0017]
The weight ratio (A: B) of the fine iron oxide particles (A) and the plate-like powder (B) is not particularly limited, but is 0.5: 99.5 from the viewpoint of exhibiting the effect of coating with the iron oxide. It is preferably 20:80 or less, and more preferably 1:99 to 15:85, from the viewpoint that the interference color of the plate-like powder (B) emitting colored interference light is not impaired. Is more preferred. In particular, when it is intended to obtain a pigment of an interference color having a high lightness such as yellow, the ratio is preferably from 3:97 to 10:90 so that the absorption of iron oxide does not become too strong.
[0018]
The average particle size of the color pigment obtained by coating the plate-like powder (B) of the present invention with the fine-particle iron oxide (A) is not particularly limited, but from 1 μm to 3000 μm in terms of good coloring and no glare. And more preferably 1 μm to 200 μm, still more preferably 1 μm to 30 μm, and particularly preferably 1 μm to 14 μm. Here, the average particle diameter is a value measured in the same manner as the plate-like powder (B).
[0019]
When the color pigment satisfies the above conditions, it has an effect of giving a three-dimensional effect without causing whitening.
[0020]
The coloring pigment of the present invention may further have an optical property of having a Munsell chroma of 8 or more at an incident light of 25 ° and a color difference of 20 or more when measured under conditions of an incident light of 25 ° and an incident light of 75 °. It is particularly preferable in terms of the effect of giving a three-dimensional effect. Here, the Munsell chroma is obtained by mixing a color pigment and nitrocellulose lacquer in a weight ratio of 1:15, applying the mixture on a colorless transparent film using a 100 μ applicator, drying the film at room temperature, and then removing the black color. Using a colorimeter (Spectrophotometer CM-512m3: Minolta Co., Ltd.), the spectral reflectance was measured using a colorimeter (spectrophotometer CM-512m3) with the normal line of the surface (0 ° direction) as the light receiving position and the incident direction as 25 °. It is a measured value. Further, the color difference (ΔE) is obtained by measuring the spectral reflectance of a sample prepared in the same manner as the Munsell chroma with the incident direction set to 25 ° or 75 °, and using the CIE1976 (L * a * b *) color system. The difference between the two color values, L ₁ a ₁ b ₁ (incident light 25 °) and L ₂ a ₂ b ₂ (incident light 75 °), measured on the display, as follows:
ΔE = {(L ₁ −L ₂ ) ² + (a ₁ −a ₂ ) ² + (b ₁ −b ₂ ) ² } ^1/2
Is calculated by
[0021]
The method for producing the color pigment of the present invention is not particularly limited as long as the average particle diameter of the coated iron oxide is 1 nm to 50 nm, but the color pigment obtained by using the following production method Is particularly preferable in that the interference color becomes brighter. Ferrous chloride, ferric chloride, ferrous sulfate, ferric sulfate, ferrous oxalate, ferric ammonium oxalate, ferric ammonium sulfate, ferric phosphate, ferric citrate , An aqueous solution of an iron salt selected from ferrous lactate and iron fumarate is adjusted to pH 1 to 2.9, and after adding a plate-like powder, the mixture is heated and dispersed at 80 ° C to 95 ° C for 4 to 8 hours. Iron hydroxide is precipitated on the surface of the plate-like powder (B) that emits interference light. This is filtered, washed with water, and calcined at 400 to 1000 ° C. to obtain a color pigment.
[0022]
In order to make the interference color clear, it is preferable to carry out the hydrolysis reaction under strongly acidic conditions of pH 1 to 2.9 from the viewpoint of depositing fine iron oxide particles having an average particle diameter of 1 to 50 nm on the surface of the interference pigment. It is particularly preferred to carry out the hydrolysis reaction at a pH of 0.5 or less.
[0023]
The weight ratio of the plate-like powder (B) to the aqueous solution of the iron salt is preferably 1,000 to 3,000 parts, and more preferably 1200 to 2,000 parts with respect to 100 parts of the powder. preferable.
[0024]
Further, the baking temperature is preferably from 600 ° C. to 900 ° C. from the viewpoint of preventing aggregation of the iron oxide fine particles, obtaining a vivid coloration of the iron oxide, and obtaining a color pigment having a clear interference color and appearance color. , 600 ° C to 800 ° C.
[0025]
The obtained coloring pigment may be treated with methyl hydrogen polysiloxane, α-monoalkoxy polydimethylsiloxane, perfluoroalkyl phosphoric acid, alkyl silylation, silica, metal soap, L-lauroyl, if necessary. Surface treatment such as lysine treatment may be performed.
[0026]
The coloring pigment of the present invention obtained as described above can impart a three-dimensional effect without impairing the vividness of the cosmetic, and thus can be suitably used as a pigment for cosmetics.
[0027]
The makeup cosmetic of the present invention contains the coloring pigment according to the present invention.
[0028]
The coloring pigment according to the present invention can be used alone or in combination of two or more in a cosmetic. The content of the coloring pigment according to the present invention in the cosmetic is not particularly limited depending on the dosage form and the like, but is preferably 0.05% by weight or more in the entire composition from the viewpoint of making it easy to feel a three-dimensional effect. Further, it is preferably at least 0.1% by weight, particularly preferably at least 0.5% by weight. Further, from the viewpoint of not hindering the vividness of the cosmetic, the content is preferably 80% by weight or less in the whole composition.
[0029]
In particular, when used in oily cosmetics such as lipstick and lip gloss, the content of the coloring pigment according to the present invention is 0.05 to 40% by weight, particularly 0.05 to 20% by weight in the whole composition. Is preferred. When used in powder cosmetics such as eyeshadow and teak, the content of the coloring pigment according to the present invention is 0.05 to 80% by weight, particularly 0.05 to 60% by weight in the whole composition. Preferably, there is.
[0030]
In the cosmetic of the present invention, in addition to the coloring pigment according to the present invention, a component to be blended in a general cosmetic, for example, other coloring pigment, powder, a mold-retaining component, an oily component, a humectant, It can be appropriately compounded within a range that does not impair the effects of the present invention.
[0031]
Other color pigments include, for example, Red No. 201, Red No. 202, Red No. 104 (1) Aluminum Lake, Red No. 218, Red No. 223, Yellow No. 4 Aluminum Lake, Yellow No. 5 Aluminum Lake, Yellow No. 401, Organic pigments such as Blue No. 1 aluminum lake and Blue No. 404, and inorganic pigments such as iron oxide, titanium oxide, zinc oxide, silica, gold, silver, navy blue, and ultramarine blue can be used.
[0032]
As the powder, for example, spherical powders such as silica, PMMA, polymethylsilsesquioxane, and urethane powder, and plate-like powders such as lauroyl lysine, silica, barium sulfate, and boron nitride can be used.
[0033]
Examples of the shape retaining component include polyethylene wax, microcrystalline wax, ceresin, carnauba wax, candelilla wax, solid fats such as hydrogenated jojoba oil, and gelling agents such as sucrose fatty acid esters.
[0034]
As the oily component, for example, monoesters such as propyl isostearate and isotridecyl isononanoate, diesters such as neopentyl glycol dicaprate and diisostearyl malate, higher alcohols such as octyl dodecanol, heavy liquid isoparaffin, isoparaffin, isostearin Sterol derivatives such as cholesteryl acid cholesteryl, di- (cholesteryl octyldodecyl) N-lauroyl-glutamate, phytosteryl isostearate, phytosteryl macadamia nut oil, and silicone oils such as dimethylpolysiloxane and methylphenylpolysiloxane can be used.
[0035]
As the humectant, for example, components such as polyhydric alcohols such as glycerin and 1,3-butylene glycol, ceramides, and stearyl glycyrrhetinate can be used.
[0036]
In the cosmetic of the present invention, other components to be blended with ordinary cosmetics, for example, surfactants, perfluoropolyethers, film-forming agents, ultraviolet absorbers, inorganic metal salts, organic metal salts, alcohol , A chelating agent, a pH adjuster, a preservative, an antioxidant, a thickener, a medicinal ingredient, water, a fragrance, and the like can be appropriately compounded as long as the effects of the present invention are not impaired.
[0037]
The make-up cosmetic of the present invention can be produced according to a conventional method using each of the above-mentioned materials, and includes an oily solid type, a powder solid type, a high oil-containing powder solid type, an oil dispersion type, a water dispersion type, and a water-in-oil type. Any dosage form such as an emulsion or an oil-in-water emulsion can be used.
[0038]
The makeup cosmetic of the present invention can be a makeup cosmetic such as lipstick, blush, eye shadow, mascara, eyeliner, foundation, etc., but impairs the vividness of the coloring pigment cosmetic of the present invention. In particular, it is preferable to use a point makeup cosmetic such as lipstick, blusher, eyeshadow, mascara, eyeliner, etc. from the viewpoint that the effect of being able to impart a three-dimensional effect is easily exerted.
[0039]
【Example】
(Evaluation method)
1. Average Particle Diameter of Iron Oxide The average particle diameter of iron oxide present on the surface of the coloring pigment is obtained by observing the fracture surface of the coloring pigment with a transmission electron microscope (TEM) (super-resolution transmission electron microscope: Hitachi H-9000UHR). It was determined by averaging the particle diameters of 20 iron oxides in the visual field.
[0040]
2. Powder Color The powder was placed in a glass cell having a diameter of 30 mm, and the color was visually observed.
[0041]
3. Interference color sample preparation: The color pigment and nitrocellulose lacquer were mixed in a weight ratio of 1:15, applied on a transparent film using a 100 μm applicator, and dried at room temperature.
[0042]
Evaluation: The sample was placed on black paper, and the interference color was visually observed.
[0043]
4. Preparation of Munsell chroma sample under the condition of incident light of 25 °: Color pigment and nitrocellulose lacquer were mixed at a weight ratio of 1:15, applied on a transparent film using a 100μ applicator, and dried at room temperature. .
[0044]
Measurement: The sample was placed on black paper, the normal to the surface (0 °) was used as the light receiving position, and the incident direction was set to 25 °, using a colorimeter (Spectrophotometer CM-512m3: Minolta Co., Ltd.). And measured the spectral reflectance.
[0045]
5. Color difference sample preparation under conditions of incident light 25 ° and incident light 75 °: A color pigment and a nitrocellulose lacquer are mixed at a weight ratio of 1:15, applied on a transparent film using a 100 μ applicator, and at room temperature. Let dry.
[0046]
Measurement: A sample was placed on black paper, the normal line (0 °) of the surface was set as a light receiving position, and the incident direction was set at 25 ° or 75 °, and a colorimeter (spectrophotometer CM-512m3: Minolta Co., Ltd.) ) Was used to measure the spectral reflectance. The color difference (ΔE) is defined by two color values, L ₁ a ₁ b ₁ (incident light 25 °) and L ₂ a ₂ b ₂ (incident), measured by color display using the CIE1976 (L * a * b *) color system. Light 75 °) using the following formula:
ΔE = {(L ₁ −L ₂ ) ² + (a ₁ −a ₂ ) ² + (b ₁ −b ₂ ) ² } ^1/2
Was calculated by
[0047]
(Examples 1 and 2, and Comparative Examples 1 to 7: coloring pigment)
Examples 1 and 2 and Comparative Examples 1 and 2 were manufactured as described below, and Comparative Examples 3 to 7 used commercially available products. For Examples 1 and 2 and Comparative Examples 1 and 2 obtained by production, the average particle diameter of iron oxide present on the surface of the coloring pigment was determined. Further, the coloring properties of the color pigments of Examples 1 and 2 and Comparative Examples 1 to 7 were evaluated.
[0048]
(Example 1) Red colored pigment showing interference color 100 parts of mica titanium (average particle diameter 6 μm) showing a red interference color (production method described in JP-A-7-316464) was dispersed in 1500 parts of water, and further, ferric sulfate was added. 21.8 parts were added, adjusted to pH 1 and kept at 90 ° C. for 6 hours. After washing with water, filtration and drying, a baking treatment was performed at 700 ° C. for 3 hours to obtain a clear red color pigment showing an interference color.
[0049]
The average particle size of the iron oxide present on the surface of the obtained pigment was 20 nm.
[0050]
(Example 2) 100 parts of a yellow colored pigment showing an interference color, mica titanium showing an orange interference color (average particle size: 12 μm) (the production method is described in JP-A-7-316644), dispersed in 2,000 parts of water, and further ferric sulfate 16.4 parts were added, and this was adjusted to pH 2.4 and kept at 90 ° C. for 6 hours. After washing with water, filtration and drying, a baking treatment was performed at 700 ° C. for 3 hours to obtain a clear yellow colored pigment showing an interference color.
[0051]
The average particle diameter of iron oxide present on the surface of the obtained pigment was about 40 nm.
[0052]
Comparative Example 1 Red Color Pigment Showing Interference Color 100 parts of mica titanium (average particle size: 6 μm) exhibiting a red interference color (produced in Japanese Patent Application Laid-Open No. Hei 7-31664) was dispersed in 1000 parts of water, and further, ferric sulfate was added. 21.8 parts were added and the mixture was adjusted to pH 4 and kept at 90 ° C. for 6 hours. After washing with water, filtration and drying, a baking treatment was performed at 700 ° C. for 3 hours to obtain a red colored pigment showing an interference color.
[0053]
The average particle diameter of iron oxide present on the surface of the obtained pigment was about 60 nm.
[0054]
(Comparative Example 2) Red coloring pigment showing interference color 100 parts of titanium mica (average particle diameter 35 μm) showing a red interference color (production method described in JP-A-7-316464) was dispersed in 700 parts of water, and further, ferric sulfate was added. 21.8 parts were added and the mixture was adjusted to pH 6 and kept at 90 ° C. for 6 hours. After washing with water, filtration and drying, a baking treatment was performed at 700 ° C. for 3 hours to obtain a red color pigment.
[0055]
The average particle diameter of iron oxide present on the surface of the obtained pigment was 200 nm.
[0056]
<Evaluation of coloring characteristics>
Using each of the color pigments, the powder color (color of the pigment itself), interference color, Munsell chroma under 25 ° incident light, and color difference under 25 ° incident light and 75 ° incident light were evaluated. did.
[0057]
Table 1 shows the evaluation results of the respective color pigments.
[0058]
[Table 1]

[0059]
From the results shown in Table 1, in Examples 1 and 2, both have Munsell chroma of 8 or more and a color difference of 20 or more, have vividness, and have a remarkable color change depending on the viewing angle. It was a pigment. Comparative Example 1 in which the average particle size of the coated iron oxide is 60 nm, and Comparative Example 2 in which the average particle size of the coated iron oxide is 200 nm, both have a Munsell chroma of less than 8, and a color difference of less than 20, The color pigment was inferior in vividness and inferior in color change depending on the viewing angle. On the other hand, the commercially available iron oxide of Comparative Example 3 had no interference color and had poor vividness. The commercially available titanium mica of Comparative Examples 4 and 5 and the commercially available silica / titanium multi-coated titanium mica of Comparative Example 6 had a white powder color and were inferior in vividness. The commercial product silica / iron oxide coated aluminum powder of Comparative Example 7 had a dull powder color.
[0060]
(Examples 3 and 4, Comparative Examples 8 to 13: lipstick)
According to Table 2, the lipsticks of Examples 3 and 4 were produced using Examples 1 and 2 as follows. Further, using the coloring pigments obtained in Comparative Examples 1 and 2, and commercially available iron oxide, commercially available titanium mica, commercially available silica / titanium multi-coated mica titanium, and silica / iron oxide coated aluminum powder, Similarly, lipsticks of Comparative Examples 8 to 13 were produced. Table 2 also shows the results of evaluation using the obtained lipstick.
[0061]
<Production method>
Components (11) to (16) were added to part of component (8), and the mixture was treated with a roller (pigment part). After the components (1) to (10) were heated and melted, the pigment part and the components (17) to (24) were added and uniformly dispersed by a homomixer. After dispersion, the mixture was poured into a mold, rapidly cooled, and formed into a stick.
[0062]
(Evaluation)
Ten expert panelists actually used the lipstick, and evaluated the following criteria for the lack of whiteness at the time of application, the vividness of the application, and the three-dimensional effect of the finish.
◎: 9 or more out of 10 evaluated good ○: 7 to 8 out of 10 evaluated good Δ: 4 to 6 out of 10 evaluated good ×: 3 or less out of 10 evaluated good [0063]
[Table 2]

[0064]
From the results shown in Table 2, Examples 3 and 4 were all cosmetics having no vividness at the time of application, vivid application, and three-dimensional finish. On the other hand, Comparative Example 8 using a commercially available iron oxide instead of the coloring pigment of the present invention did not have a three-dimensional appearance. Comparative Examples 9 and 10 using the coloring pigments of Comparative Examples 1 and 2 in place of the coloring pigment of the present invention were inferior in the finished three-dimensional appearance. Further, Comparative Example 11 using the commercial mica titanium of Comparative Example 4 in place of the coloring pigment of the present invention was white, dull, vivid in finish, and poor in three-dimensional appearance. Comparative Examples 12 and 13 using the commercially available silica / titanium multi-coated mica titanium of Comparative Example 6 and the silica / iron oxide coated aluminum powder of Comparative Example 7 in place of the coloring pigment of the present invention were white and dull, and the finish was vivid. Was inferior.
[0065]
(Example 5: lip gloss)
According to the composition shown in Table 3, component (16) was added to a part of component (8), and the mixture was treated on a three-roll mill (pigment part). After heating and melting the components (1) to (14), the pigment part and the components (15) and (17) to (21) were added, and the mixture was uniformly dispersed with a disper. After dispersion, the mixture was poured into a mold and rapidly cooled.
[0066]
[Table 3]

[0067]
The lip gloss of Example 5 was a lip gloss having a vivid finish and a good three-dimensional effect without whitening at the time of application.
[0068]
【The invention's effect】
The colored pigment of the present invention is obtained by coating a plate-like powder (B) emitting colored interference light with fine iron oxide particles (A) having an average particle diameter of 1 to 50 nm, thereby obtaining an interference color of the plate-like powder (B). Can be suppressed, and when blended into a cosmetic, the cosmetic can be prevented from being whitened, and a three-dimensional effect can be imparted without impairing the vividness.
[0069]
The makeup cosmetic of the present invention can give a three-dimensional effect without impairing the vividness of the cosmetic by containing the coloring pigment according to the present invention.

Claims

A colored pigment obtained by coating fine iron oxide particles (A) having an average particle diameter of 1 to 50 nm on a plate-like powder (B) emitting colored interference light.

The color pigment according to claim 1, wherein a weight ratio (A: B) of the fine particle iron oxide (A) and the plate-like powder (B) is 0.5: 99.5 to 20:80.

The color pigment according to claim 1, wherein the color pigment has an average particle diameter of 1 to 30 μm.

The plate-like powder (B) is at least one selected from mica, phlogopite, and glass powder coated with titanium oxide, and mica, phlogopite, and glass powder coated with titanium oxide and silica in multiple layers. The coloring pigment according to any one of claims 1 to 3.

A makeup cosmetic comprising the coloring pigment according to any one of claims 1 to 4.