Development of a lip colour chart across four ethnicities.

IF 2.5 4区 医学 Q2 DERMATOLOGY
Zoé Charton, Héloïse Vergnaud, Laurence Caisey, David Blumenthal, Michael Ma, Anthony Shi, Virginie Couturaud, Tony Xu, Eléonore Loescher
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Abstract

In the human face, the lips play a key role in social interactions and are a major element of makeup strategies. However, the amount of data available on lips, particularly relating to colour, is limited in comparison to that on skin. To gain a better understanding of lip colour, this study aimed to assess its diversity across four ethnicities (Asian Chinese, African American, Hispanic American and Caucasian American and French). The final objective was to develop a lip colour chart to guide cosmetic product development. A total of 514 women aged from 19 to 68 years were recruited in the USA, France and China. Their natural lower lip colour was measured with a full-face hyperspectral imaging system, SpectraFace® (Newtone Technologies, Lyon, France). The data showed a large variety in lip colour between and within each ethnicity. Important overlaps were found between ethnic groups, particularly and surprisingly between Hispanic and Asian women. This allowed for the development of a lip colour chart composed of 53 lip tones, based upon lightness and hue, as a global reference guide for lip colour assessment. Hispanic women showed the largest diversity, represented in 32 of the chart tones. The present study revealed a large lip colour diversity across four ethnic groups. The inter-group overlaps demonstrate that lip colour is not solely defined by individual ethnic belonging. The 53 lip tones described here could be used as target shades to create more inclusive nude lipsticks in the near future.

开发四个种族的唇色图表。
在人类的脸上,嘴唇在社交互动中起着关键作用,也是化妆策略的主要元素。然而,与皮肤的数据相比,关于嘴唇的数据,尤其是与颜色有关的数据,是有限的。为了更好地理解唇色,本研究旨在评估四个种族(亚裔华人、非裔美国人、西班牙裔美国人、白种人美国人和法国人)唇色的多样性。最终目标是制定一个唇色图表,以指导化妆品的开发。在美国、法国和中国共招募了514名年龄从19岁到68岁的女性。使用全脸高光谱成像系统SpectraFace®(Newtone Technologies, Lyon, France)测量他们的自然下唇颜色。数据显示,每个种族之间和种族内部的唇色差异很大。在不同种族之间发现了重要的重叠,尤其是在西班牙裔和亚裔女性之间。这使得基于明度和色调的53种唇色组成的唇色图表得以发展,作为唇色评估的全球参考指南。西班牙裔女性表现出最大的多样性,在32种图表音调中都有体现。目前的研究表明,四个种族的唇色差异很大。族群间的重叠表明,唇色并不仅仅是由个人的种族归属所决定的。在不久的将来,这里描述的53种唇色可以用作目标色调,以创造更具包容性的裸色唇膏。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
4.60
自引率
4.30%
发文量
73
期刊介绍: The Journal publishes original refereed papers, review papers and correspondence in the fields of cosmetic research. It is read by practising cosmetic scientists and dermatologists, as well as specialists in more diverse disciplines that are developing new products which contact the skin, hair, nails or mucous membranes. The aim of the Journal is to present current scientific research, both pure and applied, in: cosmetics, toiletries, perfumery and allied fields. Areas that are of particular interest include: studies in skin physiology and interactions with cosmetic ingredients, innovation in claim substantiation methods (in silico, in vitro, ex vivo, in vivo), human and in vitro safety testing of cosmetic ingredients and products, physical chemistry and technology of emulsion and dispersed systems, theory and application of surfactants, new developments in olfactive research, aerosol technology and selected aspects of analytical chemistry.
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