{"id":7195,"date":"2025-12-01T08:57:07","date_gmt":"2025-12-01T08:57:07","guid":{"rendered":"https:\/\/glabridinchina.com\/?p=7195"},"modified":"2026-07-15T02:40:20","modified_gmt":"2026-07-15T02:40:20","slug":"licorice-extract-for-skin-whitening-and-pigment-reduction","status":"publish","type":"post","link":"https:\/\/glabridinchina.com\/fr\/extrait-de-reglisse-pour-eclaircir-le-teint-et-attenuer-la-pigmentation\/","title":{"rendered":"Extrait de r\u00e9glisse pour \u00e9claircir le teint et r\u00e9duire la pigmentation"},"content":{"rendered":"<p>Pourquoi tant de s\u00e9rums \u00e9claircissants brunissent-ils apr\u00e8s trois mois en rayon ? J'examine chaque semaine les rapports de stabilit\u00e9 des marques cosm\u00e9tiques. La plupart des propri\u00e9taires de marques bl\u00e2ment leur emballage. Ils bl\u00e2ment la temp\u00e9rature de l'entrep\u00f4t. Le vrai probl\u00e8me est l'ingr\u00e9dient actif. Les agents de blanchiment agressifs s'oxydent rapidement. Ils irritent la barri\u00e8re cutan\u00e9e. Les consommateurs abandonnent le produit avant de constater une r\u00e9elle r\u00e9duction des pigments.<\/p><p>Nous devons repenser la mani\u00e8re dont nous arr\u00eatons la production de m\u00e9lanine. Arr\u00eatez de br\u00fbler la peau pour l'\u00e9claircir.<\/p><p>En tant que fabricant extrayant des mol\u00e9cules actives directement de la biomasse brute, nous voyons ce qui fonctionne r\u00e9ellement en laboratoire par rapport \u00e0 ce qui ne fait que faire bonne figure sur une \u00e9tiquette marketing. L'extrait de r\u00e9glisse n'est pas un th\u00e9 botanique g\u00e9n\u00e9rique que vous versez dans un tonique. Lorsque vous isolez sa mol\u00e9cule active principale, la glabridine, vous obtenez un outil de pr\u00e9cision pour la r\u00e9duction des pigments.<\/p><p>La bataille de la tyrosinase : Glabridine vs Acide Kojique<\/p><p>Regardons les donn\u00e9es concr\u00e8tes. La norme de l'industrie pour l'inhibition de la tyrosinase est l'acide kojique. La tyrosinase est l'enzyme responsable de la cr\u00e9ation de la m\u00e9lanine. Si vous bloquez la tyrosinase, vous bloquez la tache sombre.<\/p><p>Nous avons effectu\u00e9 une exp\u00e9rience comparative directe de CI50. CI50 signifie concentration inhibitrice m\u00e9diane. Cela signifie simplement : quelle quantit\u00e9 de cet ingr\u00e9dient faut-il pour arr\u00eater 50 % de l'enzyme produisant la m\u00e9lanine ? Un nombre plus bas est meilleur. Cela signifie que l'ingr\u00e9dient est plus puissant.<\/p><p>Notre laboratoire a test\u00e9 la glabridine pure par rapport \u00e0 l'acide kojique en utilisant la tyrosinase de champignon comme mod\u00e8le de r\u00e9f\u00e9rence.<\/p><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Ingr\u00e9dient actif<\/strong><\/td><td><strong>Valeur IC50 (ug\/mL)<\/strong><\/td><td><strong>Puissance relative (vs Acide Kojique)<\/strong><\/td><\/tr><\/thead><tbody><tr><td>Acide Kojique (Contr\u00f4le)<\/td><td>9.14<\/td><td>1x (R\u00e9f\u00e9rence)<\/td><\/tr><tr><td>Vitamine C (Acide Ascorbique)<\/td><td>50.0 +<\/td><td>Tr\u00e8s Faible<\/td><\/tr><tr><td>Alpha-arbutine<\/td><td>~24,0<\/td><td>Mod\u00e9r\u00e9<\/td><\/tr><tr><td>Glabridine (puret\u00e9 90 %)<\/td><td>0.43<\/td><td>Environ 21 fois plus puissant<\/td><\/tr><\/tbody><\/table><\/figure><p>Les r\u00e9sultats sont clairs. Vous avez besoin de beaucoup moins de glabridine pour obtenir la m\u00eame inhibition de la tyrosinase que l'acide kojique. Pourquoi est-ce important pour les formulateurs ? Vous utilisez moins de mati\u00e8re active. Vous r\u00e9duisez le risque de sensibilisation cutan\u00e9e. L'acide kojique provoque souvent des picotements et des \u00e9ryth\u00e8mes \u00e0 des doses efficaces (1 % \u00e0 2 %). La glabridine agit en arri\u00e8re-plan \u00e0 0,05 % \u00e0 0,1 % sans d\u00e9clencher les syst\u00e8mes de d\u00e9fense de la peau.<\/p><p>Donn\u00e9es et sp\u00e9cifications : Connaissez votre grade<\/p><p>Je vois souvent des formulateurs acheter de l'\u00ab extrait de racine de r\u00e9glisse \u00bb dans un catalogue g\u00e9n\u00e9rique. Ensuite, ils se plaignent que cela n'\u00e9claircit pas la peau. Les extraits g\u00e9n\u00e9riques contiennent principalement des sucres et des flavono\u00efdes. Ils contiennent presque z\u00e9ro glabridine.<\/p><p>Si vous voulez un \u00e9claircissement de la peau, vous devez sp\u00e9cifier la teneur en glabridine. Nous produisons deux grades cosm\u00e9tiques principaux. Voici les donn\u00e9es de sp\u00e9cification exactes que nous utilisons pour lib\u00e9rer les lots aux formulateurs OEM mondiaux.<\/p><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Param\u00e8tre de sp\u00e9cification<\/strong><\/td><td><strong>Glabridine 40 % (Grade Cosm\u00e9tique)<\/strong><\/td><td><strong>Glabridine 90 % (Haute Puret\u00e9)<\/strong><\/td><\/tr><\/thead><tbody><tr><td>Apparence<\/td><td>Brownish-yellow powder<\/td><td>White to pale yellow powder<\/td><\/tr><tr><td>Active Assay (HPLC)<\/td><td>Min 40,0%<\/td><td>Min 90.01%<\/td><\/tr><tr><td>Solubilit\u00e9<\/td><td>Soluble dans le Butyl\u00e8ne Glycol \/ Propyl\u00e8ne Glycol<\/td><td>Soluble dans l'\u00c9thanol \/ Butyl\u00e8ne Glycol<\/td><\/tr><tr><td>M\u00e9taux lourds (Total)<\/td><td>Max 10 ppm<\/td><td>Max 10 ppm<\/td><\/tr><tr><td>Perte au s\u00e9chage<\/td><td>Max 5,0 %<\/td><td>Max 2,0 %<\/td><\/tr><tr><td>Utilisation recommand\u00e9e<\/td><td>0.05% \u2013 0.2%<\/td><td>0,01% \u2013 0,05%<\/td><\/tr><\/tbody><\/table><\/figure><p>Utilisez le grade 40 % pour les lotions, les cr\u00e8mes et les formules \u00e9claircissantes g\u00e9n\u00e9rales o\u00f9 une l\u00e9g\u00e8re teinte jaune est acceptable. Utilisez le grade 90 % pour les \u00e9mulsions premium blanc pur ou les s\u00e9rums huileux transparents.<\/p><p>R\u00e9alit\u00e9 de la formulation : Comment le rendre stable<\/p><p>Vous avez les donn\u00e9es. Vous avez la mati\u00e8re pure. Maintenant, vous devez la faire fonctionner dans une cuve.<\/p><p>La glabridine est tr\u00e8s lipophile. Elle d\u00e9teste l'eau. Si vous d\u00e9posez cette poudre dans une phase aqueuse, elle flottera, s'agglutinera et ruinera votre lot. Je ne peux pas compter le nombre de fois o\u00f9 un chimiste R&amp;D m'a appel\u00e9 pour me demander pourquoi leur s\u00e9rum \u00e0 la r\u00e9glisse avait des particules brun fonc\u00e9 au fond de la bouteille.<\/p><p>La pr\u00e9-dispersion est la seule solution. Dissolvez compl\u00e8tement la poudre de glabridine dans votre phase solvant avant de l'ajouter \u00e0 l'\u00e9mulsion. Nous recommandons le Butyl\u00e8ne Glycol, le Propyl\u00e8ne Glycol ou le PEG-400. Chauffez le solvant \u00e0 40 degr\u00e9s Celsius. Remuez jusqu'\u00e0 ce que le liquide soit parfaitement clair. Ensuite, introduisez ce pr\u00e9-m\u00e9lange dans votre phase huileuse ou dans la phase de refroidissement finale de votre \u00e9mulsion.<\/p><p>Maintenez le pH de votre formule finale entre 5,0 et 7,0. La glabridine se d\u00e9grade dans les environnements tr\u00e8s acides. Ne la m\u00e9langez pas avec de l'acide glycolique \u00e0 haute concentration (pH 3,0) \u00e0 moins d'utiliser une technologie d'encapsulation avanc\u00e9e.<\/p><p>\u00c9tude de cas r\u00e9elle : Surmonter l'hyperpigmentation post-inflammatoire<\/p><p>Une marque de clinique de soins de la peau en Asie du Sud-Est a rencontr\u00e9 un probl\u00e8me majeur. Leurs clients souffraient d'une PIH s\u00e9v\u00e8re apr\u00e8s des traitements au laser. La marque utilisait une cr\u00e8me standard \u00e0 2 % d'Alpha Arbutine pour r\u00e9duire les taches sombres. Les r\u00e9sultats prenaient 12 semaines. Les clients perdaient patience.<\/p><p>Nous les avons aid\u00e9s \u00e0 redessiner la formule. Nous avons retir\u00e9 l'Arbutine. Nous avons int\u00e9gr\u00e9 0,1 % de Glabridine (de notre lot de puret\u00e9 90 %) et l'avons combin\u00e9e avec du Licochalcone A et du Glycyrrh\u00e9tinate de St\u00e9aryle pour une action anti-inflammatoire maximale.<\/p><p>Pourquoi cette combinaison ? La production de m\u00e9lanine est une r\u00e9ponse inflammatoire. La peau d\u00e9tecte un traumatisme (rayons UV ou chaleur du laser) et signale aux m\u00e9lanocytes de produire du pigment pour prot\u00e9ger la zone. Le Glycyrrh\u00e9tinate de St\u00e9aryle bloque le signal inflammatoire. La Glabridine arr\u00eate l'enzyme tyrosinase. Vous coupez la cha\u00eene d'approvisionnement et l'usine en m\u00eame temps.<\/p><p>Les r\u00e9sultats cliniques ont \u00e9t\u00e9 imm\u00e9diats. L'analyse de peau Visia a montr\u00e9 une r\u00e9duction de 41 % de la m\u00e9lanine de surface en seulement 4 semaines. L'\u00e9ryth\u00e8me (rougeur) du traitement au laser a disparu deux fois plus vite. Ils ont cr\u00e9\u00e9 une cr\u00e8me post-proc\u00e9dure \u00e0 succ\u00e8s. Ils ont r\u00e9duit leur co\u00fbt d'ingr\u00e9dient actif de 15 % car ils ont utilis\u00e9 moins de mati\u00e8res \u00e0 des doses plus faibles.<\/p><p>Lecture du Certificat d'Analyse (COA)<\/p><p>Ne croyez pas au baratin marketing. Faites confiance au COA. Lorsque vous \u00e9valuez un extrait de r\u00e9glisse pour l'\u00e9claircissement, regardez trois choses sur le document.<\/p><ul class=\"wp-block-list\"><li>M\u00e9thode d'analyse : Il doit indiquer HPLC (Chromatographie Liquide Haute Performance). Les tests UV sont facilement manipulables.<\/li>\n\n<li>Limites microbiologiques : Assurez-vous que le nombre total de colonies est inf\u00e9rieur \u00e0 1000 ufc\/g. Les extraits de plantes pr\u00e9sentent des risques \u00e9lev\u00e9s de moisissures s'ils ne sont pas trait\u00e9s correctement.<\/li>\n\n<li>R\u00e9sidus de solvant : V\u00e9rifiez la pr\u00e9sence d'\u00e9thanol ou d'ac\u00e9tate d'\u00e9thyle r\u00e9siduels du processus d'extraction. Les fabricants haut de gamme garantissent des niveaux traces bien inf\u00e9rieurs aux limites r\u00e9glementaires.<\/li><\/ul><p>Tendances de l'industrie et conformit\u00e9<\/p><p>Les r\u00e9glementations mondiales se retournent contre les synth\u00e9tiques agressifs. L'Europe a s\u00e9v\u00e8rement restreint l'Hydroquinone il y a des ann\u00e9es. L'Asie suit le mouvement. La beaut\u00e9 propre exige des alternatives d'origine v\u00e9g\u00e9tale, hautement efficaces. L'extrait de r\u00e9glisse comble parfaitement ce foss\u00e9. Il offre une inhibition de la tyrosinase de niveau pharmaceutique avec un nom INCI propre et botanique (Extrait de Racine de Glycyrrhiza Glabra).<\/p><p>Nous fournissons des \u00e9chantillons aux marques cosm\u00e9tiques qualifi\u00e9es dans le monde entier. Vous testez la solubilit\u00e9. Vous ex\u00e9cutez les protocoles de stabilit\u00e9. Vous mesurez l'\u00e9claircissement clinique.<\/p><p>Mod\u00e8le de formulation de base : \u00c9mulsion \u00e9claircissante<\/p><p>Voici un cadre de d\u00e9part pour une cr\u00e8me \u00e9claircissante tr\u00e8s stable utilisant la Glabridine.<\/p><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Phase<\/strong><\/td><td><strong>Nom INCI<\/strong><\/td><td><strong>Pourcentage (%)<\/strong><\/td><td><strong>Fonction<\/strong><\/td><\/tr><\/thead><tbody><tr><td>UN<\/td><td>Eau<\/td><td>Pour 100<\/td><td>Solvant<\/td><\/tr><tr><td>UN<\/td><td>Glyc\u00e9rine<\/td><td>5.0<\/td><td>Humectant<\/td><\/tr><tr><td>B<\/td><td>Triglyc\u00e9ride caprylique\/caprique<\/td><td>8.0<\/td><td>\u00c9mollient<\/td><\/tr><tr><td>B<\/td><td>Glucoside de c\u00e9t\u00e9aryle<\/td><td>3,0<\/td><td>\u00c9mulsifiant<\/td><\/tr><tr><td>B<\/td><td>glycyrrh\u00e9tinate de st\u00e9aryle<\/td><td>0.2<\/td><td>Apaisant \/ Anti-inflammatoire<\/td><\/tr><tr><td>C<\/td><td>Butyl\u00e8ne Glycol<\/td><td>4.0<\/td><td>Solvant actif<\/td><\/tr><tr><td>C<\/td><td>Glabridine (40%)<\/td><td>0,1<\/td><td>Actif \u00e9claircissant<\/td><\/tr><tr><td>D<\/td><td>Ph\u00e9noxy\u00e9thanol<\/td><td>0.8<\/td><td>Preservative<\/td><\/tr><\/tbody><\/table><\/figure><p>M\u00e9langer la phase C s\u00e9par\u00e9ment \u00e0 40 degr\u00e9s Celsius jusqu'\u00e0 obtention d'une solution claire. \u00c9mulsifier les phases A et B \u00e0 75 degr\u00e9s Celsius. Refroidir \u00e0 40 degr\u00e9s Celsius. Ajouter la phase C. Ajouter la phase D. Homog\u00e9n\u00e9iser.<\/p><p>La r\u00e9duction des pigments n\u00e9cessite une strat\u00e9gie, pas seulement des pourcentages \u00e9lev\u00e9s d'acides al\u00e9atoires. Cibler l'enzyme tyrosinase avec pr\u00e9cision. G\u00e9rer l'inflammation sous-jacente. S'approvisionner en mati\u00e8res premi\u00e8res de haute puret\u00e9 valid\u00e9es par des donn\u00e9es HPLC. La Glabridine offre la solution la plus \u00e9l\u00e9gante pour un \u00e9claircissement de la peau moderne, efficace et s\u00fbr.<\/p><p>R\u00e9f\u00e9rences faisant autorit\u00e9 et litt\u00e9rature cit\u00e9e<\/p><ol start=\"1\" class=\"wp-block-list\"><li>Yokota, T., et al. (1998). L'effet inhibiteur de la glabridine extraite de la r\u00e9glisse sur la m\u00e9lanogen\u00e8se et l'inflammation. Pigment Cell Research, 11(6), 355-361.<\/li>\n\n<li>Simmler, C., et al. (2013). Propri\u00e9t\u00e9s phytochimiques et biologiques de la glabridine. Fitoterapia, 90, 160-184.<\/li>\n\n<li>Ebanks, J. P., et al. (2009). M\u00e9canismes r\u00e9gulant la pigmentation de la peau : l'ascension et le d\u00e9clin de la coloration du teint. International Journal of Molecular Sciences, 10(9), 4066-4087.<\/li>\n\n<li>\u00c9valuations du groupe d'experts du Cosmetic Ingredient Review (CIR) sur les extraits botaniques (donn\u00e9es de s\u00e9curit\u00e9 publiquement disponibles).<\/li><\/ol>","protected":false},"excerpt":{"rendered":"<p>Why do so many brightening serums turn brown after three months on the shelf? I review stability reports from cosmetic brands every week. Most brand&#8230;<\/p>","protected":false},"author":8,"featured_media":6395,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[60],"tags":[],"class_list":["post-7195","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-product-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.8 (Yoast SEO v24.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Licorice Extract for Skin Whitening and Pigment Reduction - Shaanxi Huatai Bio-Fine Chemical Co., Ltd.<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/glabridinchina.com\/fr\/licorice-extract-for-skin-whitening-and-pigment-reduction\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Licorice Extract for Skin Whitening and Pigment Reduction\" \/>\n<meta property=\"og:description\" content=\"Why do so many brightening serums turn brown after three months on the shelf? 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