{"id":12614,"date":"2024-10-25T17:08:13","date_gmt":"2024-10-25T15:08:13","guid":{"rendered":"https:\/\/blog.weareprovital.com\/?p=12614"},"modified":"2024-11-11T14:23:40","modified_gmt":"2024-11-11T12:23:40","slug":"structure-du-cheveu","status":"publish","type":"post","link":"https:\/\/blog.weareprovital.com\/fr\/structure-du-cheveu\/","title":{"rendered":"Structure du cheveu : l\u2019ingr\u00e9dient naturel pour un soin des cheveux \u00e0 l\u2019\u00e9chelle mol\u00e9culaire"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Alors que l\u2019industrie des soins capillaires atteint son plein potentiel, l\u2019attention se tourne de plus en plus vers la <strong>structure du cheveu<\/strong>. De ce fait, de nombreux traitements innovants s\u2019efforcent de mieux comprendre la structure du cheveu et sa composition mol\u00e9culaire afin de proposer une protection compl\u00e8te \u00e0 ces niveaux.<\/p>\n\n\n\n<!--more-->\n\n\n\n<p class=\"wp-block-paragraph\">Approcher la structure du cheveu, c\u2019est en quelque sorte explorer un domaine invisible. Un cheveu qui para\u00eet sain en surface est le reflet d\u2019un \u00e9quilibre dans les<strong> interactions chimiques complexes<\/strong> au sein de sa structure interne. Autrement dit, les probl\u00e8mes d\u2019apparence sont souvent le signe de d\u00e9s\u00e9quilibres structurels. C\u2019est ce que prennent en compte ces nouveaux traitements et ingr\u00e9dients innovants.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le d\u00e9veloppement de solutions d\u00e9passant la <a href=\"https:\/\/blog.weareprovital.com\/fr\/acides-amines-keratiniques-pour-reparer-et-renforcer-les-cheveux\/\">k\u00e9ratine pour r\u00e9parer et renforcer les cheveux<\/a> t\u00e9moigne d\u2019un <strong>march\u00e9 d\u00e9velopp\u00e9<\/strong>, o\u00f9 les consommateurs sont de plus en plus <strong>inform\u00e9s <\/strong>et <strong>exigeants<\/strong>. En r\u00e9ponse, les marques de soins capillaires s\u2019adaptent \u00e0 ces attentes \u00e9lev\u00e9es, en proposant des solutions \u00e0 des probl\u00e8mes comme la porosit\u00e9 capillaire ou l\u2019augmentation de la densit\u00e9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Au c\u0153ur de ces innovations se trouve toujours l\u2019am\u00e9lioration de la structure du cheveu au niveau mol\u00e9culaire. Dans ce contexte, un ingr\u00e9dient naturel innovant, d\u00e9riv\u00e9 d\u2019extrait d\u2019\u00e9corce de pin, apporte une solution pour<strong> pr\u00e9venir les dommages irr\u00e9versibles aux prot\u00e9ines capillaires<\/strong>, gr\u00e2ce \u00e0 une compr\u00e9hension approfondie de la structure capillaire bas\u00e9e sur une technologie de pointe.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n\t\t<div class=\"ic_cta_wrapper\">\n\t\t\t<div class=\"ic_cta_banner\">\n\t\t\t\t<!--HubSpot Call-to-Action Code -->\n\t\t\t\t<span class=\"hs-cta-wrapper\" id='hs-cta-wrapper-c8f32edb-ec57-42c5-b940-974bf1bd9360'>\n\t\t\t\t\t<span class='hs-cta-node hs-cta-c8f32edb-ec57-42c5-b940-974bf1bd9360' id='hs-cta-c8f32edb-ec57-42c5-b940-974bf1bd9360'>\n\t\t\t\t\t\t<!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]-->\n\t\t\t\t\t\t<a href=\"https:\/\/hubspot-cta-redirect-eu1-prod.s3.amazonaws.com\/cta\/redirect\/6867183\/c8f32edb-ec57-42c5-b940-974bf1bd9360\" target=\"_blank\" rel=\"noopener\">\n\t\t\t\t\t\t\t<img decoding=\"async\" class=\"hs-cta-img\" id=\"hs-cta-img-c8f32edb-ec57-42c5-b940-974bf1bd9360\" style=\"border-width:0px;\" src=\"https:\/\/no-cache.hubspot.com\/cta\/default\/6867183\/c8f32edb-ec57-42c5-b940-974bf1bd9360.png\"  alt=\"New Call-to-action\" \/>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/span>\n\t\t\t    <script charset=\"utf-8\" src=\"https:\/\/js.hscta.net\/cta\/current.js\"><\/script>\n\t\t\t\t\t<script type=\"text\/javascript\">\n\t\t\t\t\t\thbspt.cta.load(6867183, 'c8f32edb-ec57-42c5-b940-974bf1bd9360', {\"useNewLoader\":\"true\",\"region\":\"na1\"});\n\t\t\t\t\t<\/script>\n\t\t\t\t<\/span>\n\t\t\t\t<!-- end HubSpot Call-to-Action Code -->\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n  <\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Content<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/blog.weareprovital.com\/fr\/structure-du-cheveu\/#Quest-ce_que_la_structure_du_cheveu_et_comment_en_prendre_soin\" >Qu\u2019est-ce que la structure du cheveu et comment en prendre soin&nbsp;?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.weareprovital.com\/fr\/structure-du-cheveu\/#Keradeep_de_lextrait_decorce_de_pin_pour_un_soin_preventif_de_la_structure_du_cheveu\" >Keradeep&nbsp;: de l\u2019extrait d\u2019\u00e9corce de pin pour un soin pr\u00e9ventif de la structure du cheveu<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Quest-ce_que_la_structure_du_cheveu_et_comment_en_prendre_soin\"><\/span>Qu\u2019est-ce que la structure du cheveu et comment en prendre soin&nbsp;?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La structure du cheveu se compose, sur le plan physique, de trois \u00e9l\u00e9ments principaux&nbsp;: la tige, le follicule et la racine.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cependant, une exploration au niveau mol\u00e9culaire permet de mieux comprendre son fonctionnement et d\u2019identifier les m\u00e9canismes n\u00e9cessaires \u00e0 sa protection. En r\u00e9sum\u00e9, la structure mol\u00e9culaire du cheveu se divise en&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Prot\u00e9ines&nbsp;<\/strong>: ces structures complexes sont constitu\u00e9es de cha\u00eenes d\u2019acides amin\u00e9s et peuvent contenir diff\u00e9rents types de mol\u00e9cules, la k\u00e9ratine repr\u00e9sentant entre 90 et 95&nbsp;% de leur composition. Cette k\u00e9ratine est elle-m\u00eame form\u00e9e de 18 acides amin\u00e9s, parmi lesquels on trouve des \u00e9l\u00e9ments cl\u00e9s tels que la cystine, la s\u00e9rine et la glycine.<\/li>\n\n\n\n<li><strong>Liaisons chimiques<\/strong>&nbsp;: elles jouent un r\u00f4le essentiel en maintenant les mol\u00e9cules ensemble, garantissant ainsi leur structure et leur stabilit\u00e9. Bien qu\u2019il existe plusieurs types de liaisons, les ponts disulfures sont particuli\u00e8rement importants. Ce sont des liaisons covalentes qui unissent les cha\u00eenes de k\u00e9ratine pour former une structure tridimensionnelle, ce qui est crucial pour assurer la force et l\u2019\u00e9lasticit\u00e9 des cheveux.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">En se focalisant sur la structure du cheveu et les dommages capillaires, il est essentiel de maintenir l\u2019<strong>\u00e9quilibre des liaisons chimiques <\/strong>pour pr\u00e9server la sant\u00e9 et l\u2019apparence des cheveux. En revanche, le <strong>stress oxydatif<\/strong>, provoqu\u00e9 par des facteurs environnementaux ou par l\u2019utilisation de produits chimiques (comme ceux utilis\u00e9s lors de la d\u00e9coloration), peut perturber la fonction des prot\u00e9ines, affaiblissant ainsi les prot\u00e9ines et les liaisons chimiques qui forment la structure interne des cheveux.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cela inclut des ph\u00e9nom\u00e8nes tels que la <strong>carbonylation<\/strong>. Ce processus, qui r\u00e9sulte du stress oxydatif, entra\u00eene l\u2019attachement de groupes carbonyles aux r\u00e9sidus de certains acides amin\u00e9s dans les prot\u00e9ines, provoquant des modifications irr\u00e9versibles qui alt\u00e8rent tant la structure que la fonction de ces prot\u00e9ines.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les sympt\u00f4mes visibles se manifestent par des cheveux ternes et cassants, moins doux et moins brillants, ainsi que par des cuticules plus poreuses. Toutefois, le v\u00e9ritable probl\u00e8me se situe au niveau mol\u00e9culaire de la structure capillaire. De plus, la carbonylation repr\u00e9sente un dommage particuli\u00e8rement pr\u00e9occupant, car elle entra\u00eene des <strong>alt\u00e9rations permanentes<\/strong> des liaisons prot\u00e9iques et des cuticules.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dans cette optique, les traitements destin\u00e9s \u00e0 offrir une protection efficace contre la carbonylation doivent adopter une <strong>approche pr\u00e9ventive<\/strong>, capable d\u2019anticiper et de pr\u00e9venir d\u2019\u00e9ventuels dommages futurs aux cheveux.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Keradeep_de_lextrait_decorce_de_pin_pour_un_soin_preventif_de_la_structure_du_cheveu\"><\/span>Keradeep&nbsp;: de l\u2019extrait d\u2019\u00e9corce de pin pour un soin pr\u00e9ventif de la structure du cheveu<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Keradeep <\/strong>se r\u00e9v\u00e8le \u00eatre un partenaire essentiel pour la sant\u00e9 des cheveux au niveau mol\u00e9culaire. Formul\u00e9 \u00e0 partir d\u2019<strong>extrait d\u2019\u00e9corce de pin<\/strong>, il est riche en compos\u00e9s naturels tels que les polyph\u00e9nols, qui pr\u00e9sentent d\u2019importantes propri\u00e9t\u00e9s antioxydantes contre les dommages irr\u00e9versibles aux prot\u00e9ines capillaires.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019action protectrice de Keradeep aide ainsi \u00e0 <strong>pr\u00e9venir l\u2019apparition de groupes carbonyles<\/strong> et la formation d\u2019esp\u00e8ces de cystines oxyd\u00e9es. Cela constitue une d\u00e9fense efficace contre les dommages capillaires li\u00e9s au stress oxydatif caus\u00e9 par des traitements chimiques, tout en offrant une protection contre des facteurs environnementaux tels que la pollution et les radiations UV.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019alliance de la <a href=\"https:\/\/www.weareprovital.com\/fr\/be-tech\" target=\"_blank\" rel=\"noreferrer noopener\">science cosm\u00e9tique avanc\u00e9e et de la haute technologie<\/a> a permis d\u2019observer et de confirmer en d\u00e9tail l\u2019effet protecteur de Keradeep sur la structure du cheveu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour ce faire, chez Provital, nous avons \u00e9tabli des partenariats avec des entreprises hautement innovantes afin de r\u00e9aliser trois <strong>\u00e9tudes d\u2019efficacit\u00e9 <\/strong><strong><em>ex vivo<\/em><\/strong>. Ces \u00e9tudes se distinguent par leur <strong>rigueur<\/strong>, la <strong>technologie <\/strong>employ\u00e9e pour analyser la structure du cheveu et les <strong>r\u00e9sultats <\/strong>obtenus&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Visualisation et quantification des prot\u00e9ines carbonyl\u00e9es des cheveux \u00e0 l\u2019aide d\u2019une sonde fluorescente brevet\u00e9e par Oxi-Proteomics, qui permet une \u00e9valuation quantitative des niveaux d\u2019oxydation (signal des prot\u00e9ines carbonyl\u00e9es) dans la cuticule et le cortex.<\/li>\n\n\n\n<li>Analyse de la fibre capillaire \u00e0 l\u2019\u00e9chelle mol\u00e9culaire gr\u00e2ce \u00e0 la spectroscopie de transformation de Fourier (FTIR) d\u00e9velopp\u00e9e par ALBA Synchrotron.<\/li>\n\n\n\n<li>Examen de la disposition structurelle de la k\u00e9ratine \u00e0 l\u2019aide de bir\u00e9fringence (Xpolar\u00ae) d\u00e9velopp\u00e9e par Kamax Innovative System.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ces tests de pointe ont permis de d\u00e9montrer la capacit\u00e9 de Keradeep \u00e0 <strong>pr\u00e9venir l\u2019oxydation de plusieurs groupes chimiques<\/strong> au sein des prot\u00e9ines capillaires, tout en prot\u00e9geant contre les modifications de la conformation des prot\u00e9ines.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n\t\t<div class=\"ic_cta_wrapper\">\n\t\t\t<div class=\"ic_cta_banner\">\n\t\t\t\t<!--HubSpot Call-to-Action Code -->\n\t\t\t\t<span class=\"hs-cta-wrapper\" id='hs-cta-wrapper-46a598a3-4810-403b-9edb-348112186d83'>\n\t\t\t\t\t<span class='hs-cta-node hs-cta-46a598a3-4810-403b-9edb-348112186d83' id='hs-cta-46a598a3-4810-403b-9edb-348112186d83'>\n\t\t\t\t\t\t<!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]-->\n\t\t\t\t\t\t<a href=\"https:\/\/hubspot-cta-redirect-eu1-prod.s3.amazonaws.com\/cta\/redirect\/6867183\/46a598a3-4810-403b-9edb-348112186d83\" target=\"_blank\" rel=\"noopener\">\n\t\t\t\t\t\t\t<img decoding=\"async\" class=\"hs-cta-img\" id=\"hs-cta-img-46a598a3-4810-403b-9edb-348112186d83\" style=\"border-width:0px;\" src=\"https:\/\/no-cache.hubspot.com\/cta\/default\/6867183\/46a598a3-4810-403b-9edb-348112186d83.png\"  alt=\"New Call-to-action\" \/>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/span>\n\t\t\t    <script charset=\"utf-8\" src=\"https:\/\/js.hscta.net\/cta\/current.js\"><\/script>\n\t\t\t\t\t<script type=\"text\/javascript\">\n\t\t\t\t\t\thbspt.cta.load(6867183, '46a598a3-4810-403b-9edb-348112186d83', {\"useNewLoader\":\"true\",\"region\":\"na1\"});\n\t\t\t\t\t<\/script>\n\t\t\t\t<\/span>\n\t\t\t\t<!-- end HubSpot Call-to-Action Code -->\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n  <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Alors que l\u2019industrie des soins capillaires atteint son plein potentiel, l\u2019attention se tourne de plus en plus vers la structure [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":12615,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"om_disable_all_campaigns":false,"footnotes":""},"categories":[60],"tags":[],"class_list":["post-12614","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-agir-pour-la-planete-et-les-hommes"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Structure du cheveu : l\u2019ingr\u00e9dient naturel pour un soin des cheveux \u00e0 l\u2019\u00e9chelle mol\u00e9culaire<\/title>\n<meta name=\"description\" content=\"Approcher la structure du cheveu, c\u2019est en quelque sorte explorer un domaine invisible. 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