{"id":15319,"date":"2026-07-13T09:03:02","date_gmt":"2026-07-13T09:03:02","guid":{"rendered":"https:\/\/glabridinchina.com\/?p=15319"},"modified":"2026-07-13T09:12:06","modified_gmt":"2026-07-13T09:12:06","slug":"best-brightening-actives-for-hyperpigmentation-formulas-a-formulators-comparison-guide","status":"publish","type":"post","link":"https:\/\/glabridinchina.com\/fr\/best-brightening-actives-for-hyperpigmentation-formulas-a-formulators-comparison-guide\/","title":{"rendered":"Best Brightening Actives for Hyperpigmentation Formulas: A Formulator\u2019s Comparison Guide"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"15319\" class=\"elementor elementor-15319\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-aa96e14 e-flex e-con-boxed e-con e-parent\" data-id=\"aa96e14\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e696ae8 elementor-widget elementor-widget-html\" data-id=\"e696ae8\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t  <script type=\"application\/ld+json\">{\n    \"@context\": \"https:\\\/\\\/schema.org\",\n    \"@type\": \"Article\",\n    \"mainEntityOfPage\": {\n        \"@type\": \"WebPage\",\n        \"@id\": \"#\"\n    },\n    \"headline\": \"Best Brightening Actives for Hyperpigmentation Formulas: A Formulator's Comparison Guide\",\n    \"about\": [\n        {\n            \"@type\": \"ChemicalSubstance\",\n            \"name\": \"Glabridin\",\n            \"alternateName\": \"\\u5149\\u7518\\u8349\\u5b9a\"\n        }\n    ],\n    \"publisher\": {\n        \"@type\": \"Organization\",\n        \"name\": \"Huatai Bio-Fine Chemical\",\n        \"url\": \"https:\\\/\\\/glabridinchina.com\"\n    },\n    \"author\": {\n        \"@type\": \"Organization\",\n        \"name\": \"Huatai Bio-Fine Chemical Technical Team\"\n    },\n    \"datePublished\": \"2026\",\n    \"description\": \"A formulator's guide to selecting brightening actives for hyperpigmentation \\u2014 comparing glabridin, alpha arbutin, kojic acid, niacinamide, tranexamic acid, and licorice extract by mechanism, stability, and application type.\"\n}<\/script>\n\n  <link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n  <link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n  <link href=\"https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@300;400;500;600;700&family=Merriweather:ital,wght@0,400;0,700;1,400&display=swap\" rel=\"stylesheet\">\n\n  <style>\n    :root {\n      --color-bg:           #f9f9f7;\n      --color-surface:      #ffffff;\n      --color-border:       #e5e2d9;\n      --color-text:         #1c1c1a;\n      --color-text-muted:   #6a6760;\n      --color-accent:       #2d5a3d;\n      --color-accent-light: #edf4ef;\n      --color-accent-mid:   #4a7c5f;\n      --color-warn:         #A0522D;\n      --color-warn-light:   #fef0e6;\n      --color-data-bg:      #f3f1ed;\n      --font-heading:       'Merriweather', Georgia, 'Times New Roman', serif;\n      --font-body:          'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;\n      --max-width:          800px;\n      --radius:             6px;\n    }\n\n    *, *::before, *::after { box-sizing: border-box; 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A formulator choosing brightening actives without distinguishing between these types is working with an imprecise brief.<\/p>\n      <div class=\"byline\">\n        <span><strong>Huatai Bio-Fine Chemical<\/strong> \u2014 fabricant d'actifs cosm\u00e9tiques de haute puret\u00e9 depuis 2008<\/span>\n        <span style=\"color:var(--color-border)\">\u00b7<\/span>\n        <span>Publi\u00e9 2026<\/span>\n      <\/div>\n    <\/header>\n\n    <article class=\"article-body\">\n\n      <p>Hyperpigmentation is not a single condition \u2014 it is a category that encompasses post-inflammatory hyperpigmentation (PIH), melasma, solar lentigines, and diffuse UV-induced dyschromia, each with distinct etiology and optimal treatment approach. A formulator choosing brightening actives without distinguishing between these types is working with an imprecise brief.<\/p>\n\n      <p>This guide structures the selection decision around pigmentation type first, then maps available actives to each type based on mechanism, published efficacy data, stability, and formulation compatibility. It is written for formulators who need to make defensible choices \u2014 not for consumers choosing a product.<\/p>\n\n      <h2>Understanding Hyperpigmentation Types \u2014 and Why It Matters for Active Selection<\/h2>\n\n      <h3>Post-Inflammatory Hyperpigmentation (PIH)<\/h3>\n\n      <p>PIH results from melanogenesis triggered by inflammation \u2014 acne, eczema, injury, or any condition that activates the inflammatory cascade in skin. The key mediator is prostaglandin E\u2082 (PGE\u2082), produced via the COX pathway in response to inflammatory stimuli. PGE\u2082 binds to EP receptors on melanocytes, elevating cAMP, upregulating MITF (microphthalmia-associated transcription factor), and driving tyrosinase expression and melanin synthesis.<\/p>\n\n      <p><strong>Optimal active profile for PIH:<\/strong> an active that helps modulate the upstream inflammatory signal (COX\/PGE\u2082) AND inhibits tyrosinase. Glabridin addresses both through a single molecule. Combining with an antimicrobial active to help reduce the inflammatory trigger further extends the system \u2014 <a href=\"https:\/\/glabridinchina.com\/fr\/produit\/totarol-2\/\" target=\"_blank\">Totarol 99 %<\/a> (COSMOS-certified, 100% PPAI, exclusively distributed by Huatai in Mainland China) is an effective option for this role in PIH formulas targeting acne-associated pigmentation. For a full system design, see our <a href=\"https:\/\/glabridinchina.com\/fr\/post-acne-pih-repair-combining-glabridin-and-totarol\/\">post-acne PIH repair formulation guide<\/a>.<\/p>\n\n      <h3>M\u00e9lasma<\/h3>\n\n      <p>Melasma is a complex, hormonally influenced condition involving both melanocyte hyperactivity and keratinocyte\u2013melanocyte crosstalk. UV exposure, hormonal signals, and keratinocyte-derived paracrine factors all contribute. The plasminogen\/uPA pathway \u2014 by which keratinocytes send melanogenic signals to adjacent melanocytes \u2014 is particularly relevant.<\/p>\n\n      <p><strong>Optimal active profile for melasma:<\/strong> tranexamic acid (TXA) targeting the plasminogen pathway, combined with a tyrosinase inhibitor (glabridin) and a melanosome transfer inhibitor (niacinamide). This three-intercept system addresses the multi-factorial nature of melasma.<\/p>\n\n      <h3>Solar Lentigines<\/h3>\n\n      <p>Solar lentigines result from focal accumulation of melanin in localized clusters of hyperactive melanocytes following cumulative UV exposure. They respond to tyrosinase inhibition and accelerated cell turnover to clear accumulated pigment from existing keratinocytes.<\/p>\n\n      <p><strong>Optimal active profile for solar lentigines:<\/strong> high-potency tyrosinase inhibitor (glabridin at 0.1\u20130.5% active) combined with an exfoliant (AHA or BHA at appropriate concentration) to accelerate pigment clearance from the stratum corneum.<\/p>\n\n      <h3>Diffuse UV-Induced Dyschromia<\/h3>\n\n      <p>Generalized dullness and uneven skin tone from chronic sun exposure responds to broad-spectrum melanin reduction. Multiple actives at moderate concentrations are often more effective than a single active at a high concentration.<\/p>\n\n      <h2>Active Comparison: Mechanism, Data, and Formulation Profile<\/h2>\n\n      <h3>The Comparison Table<\/h3>\n\n      <div class=\"table-wrap\">\n        <table>\n          <thead>\n            <tr>\n              <th>Actif<\/th>\n              <th>M\u00e9canisme primaire<\/th>\n              <th>IC\u2085\u2080 (Tyrosinase, \u03bcmol\/L)<\/th>\n              <th>Stabilit\u00e9<\/th>\n              <th>Risque d'irritation<\/th>\n              <th>EU Status<\/th>\n              <th>COSMOS Available<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td><strong>Glabridine<\/strong><\/td>\n              <td>Non-competitive tyrosinase inhibition + COX\/PGE\u2082 anti-inflammatory modulation<\/td>\n              <td><strong>0.09<\/strong> (Nerya et al., 2003)<\/td>\n              <td>Moderate \u2014 requires light\/pH\/antioxidant management<\/td>\n              <td>Low \u2014 zero adverse reactions in human closed patch test (30 subjects)<\/td>\n              <td>Autoris\u00e9<\/td>\n              <td>\u2705 Yes (40%, 90%, 98%)<\/td>\n            <\/tr>\n            <tr>\n              <td>Alpha-arbutine<\/td>\n              <td>Inhibition comp\u00e9titive de la tyrosinase<\/td>\n              <td>~2.70<\/td>\n              <td>Haut<\/td>\n              <td>Faible<\/td>\n              <td>Autoris\u00e9<\/td>\n              <td>Some suppliers<\/td>\n            <\/tr>\n            <tr>\n              <td>Acide kojique<\/td>\n              <td>Copper chelation; tyrosinase inhibition (mechanism disputed in literature)<\/td>\n              <td>~16.67<\/td>\n              <td>Low \u2014 discolors rapidly above pH 5.5; light-sensitive<\/td>\n              <td>Moderate \u2014 documented sensitizer in some individuals<\/td>\n              <td>Permitted (max 1% in face products, EU 2023)<\/td>\n              <td>Non<\/td>\n            <\/tr>\n            <tr>\n              <td>Extrait de racine de r\u00e9glisse<\/td>\n              <td>Multi-component; glabridin is primary active monomer<\/td>\n              <td>Variable \u2014 depends on glabridin content of extract<\/td>\n              <td>Mod\u00e9r\u00e9<\/td>\n              <td>Faible<\/td>\n              <td>Autoris\u00e9<\/td>\n              <td>Some grades<\/td>\n            <\/tr>\n            <tr>\n              <td>Niacinamide<\/td>\n              <td>Inhibition du transfert des m\u00e9lanosomes<\/td>\n              <td>N\/A \u2014 acts downstream of synthesis<\/td>\n              <td>Haut<\/td>\n              <td>Faible<\/td>\n              <td>Autoris\u00e9<\/td>\n              <td>Some suppliers<\/td>\n            <\/tr>\n            <tr>\n              <td>Acide tranexamique (TXA)<\/td>\n              <td>Plasminogen\/uPA pathway inhibition<\/td>\n              <td>N\/A \u2014 acts upstream of synthesis<\/td>\n              <td>Haut<\/td>\n              <td>Faible<\/td>\n              <td>Autoris\u00e9<\/td>\n              <td>\u2014<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <p><em>IC\u2085\u2080 values: published comparative tyrosinase inhibition studies. Lower = more potent enzyme inhibition. Note: IC\u2085\u2080 reflects in vitro tyrosinase inhibition only \u2014 does not capture mechanism differences or bioavailability.<\/em><\/p>\n\n      <h3>Glabridin vs Alpha Arbutin for Hyperpigmentation<\/h3>\n\n      <p>Alpha arbutin is a glycosylated hydroquinone derivative that inhibits tyrosinase via competitive inhibition \u2014 it competes with L-tyrosine at the enzyme's active site. It is widely used because of its high stability, low irritation, and good compatibility across formulation systems.<\/p>\n\n      <p>The key difference from glabridin is potency and mechanism breadth. At the enzymatic level, glabridin's IC\u2085\u2080 (0.09 \u03bcmol\/L, Nerya et al., 2003) is approximately 30 times lower than alpha arbutin's \u2014 meaning roughly 30 times less active glabridin is needed to achieve equivalent tyrosinase inhibition in vitro. More importantly, glabridin's anti-inflammatory COX\/PGE\u2082 pathway modulation is absent in alpha arbutin \u2014 making glabridin the preferable option for PIH, while alpha arbutin is effective for diffuse UV-induced dyschromia and general brightening maintenance.<\/p>\n\n      <p>For a dedicated mechanism and formulation comparison, see: <a href=\"https:\/\/glabridinchina.com\/fr\/glabridin-vs-alpha-arbutin-different-roles-in-modern-brightening-systems\/\">Glabridine vs Alpha-Arbutine : R\u00f4les diff\u00e9rents dans les syst\u00e8mes \u00e9claircissants modernes<\/a>.<\/p>\n\n      <h3>Licorice Extract vs Glabridin: Understanding the Relationship<\/h3>\n\n      <p>Licorice root extract is not a single compound \u2014 it is a complex botanical mixture. Within the <em>Glycyrrhiza<\/em> genus, several hundred compounds have been reported in the published literature. Glabridin is the most potent brightening monomer among them, accounting for the majority of the brightening activity attributed to licorice extract in cosmetic applications.<\/p>\n\n      <p>When a formula uses \"licorice root extract\" as a brightening active, the actual glabridin concentration delivered depends on the glabridin content of the extract \u2014 which varies significantly between suppliers, crop years, and extraction methods.<\/p>\n\n      <p>Using purified glabridin rather than crude licorice extract provides:<\/p>\n      <ul>\n        <li>Defined, verifiable active dose<\/li>\n        <li>Consistent batch-to-batch potency<\/li>\n        <li>Cleaner impurity profile<\/li>\n        <li>COSMOS certification eligibility (for certified grades)<\/li>\n        <li>Freedom from co-extractants whose effects are not individually characterized<\/li>\n      <\/ul>\n\n      <h3>Kojic Acid: The Stability Problem<\/h3>\n\n      <p>Kojic acid's mechanism of action \u2014 copper chelation at the tyrosinase active site, with additional inhibition kinetics that remain disputed in the published literature \u2014 delivers real brightening efficacy. Its IC\u2085\u2080 is substantially weaker than glabridin's, but it has a long track record in clinical brightening formulations.<\/p>\n\n      <p>The primary challenge is stability. Kojic acid discolors rapidly in the presence of light, metal ions, or alkaline pH \u2014 turning yellow\/brown in formulations that are not precisely optimized. The European Commission restricted kojic acid in face products to 1% maximum in 2023 (Commission Regulation (EU) 2023\/1490). Additionally, kojic acid is a documented contact sensitizer in some individuals.<\/p>\n\n      <p>For formulas where kojic acid was previously the primary brightening active, glabridin + niacinamide at appropriate concentrations provides a mechanism-diverse replacement with comparable or improved stability characteristics and a well-tolerated safety profile.<\/p>\n\n      <h2>Formulation Recommendations by Hyperpigmentation Type<\/h2>\n\n      <h3>PIH (Post-Inflammatory Hyperpigmentation)<\/h3>\n\n      <div class=\"table-wrap\">\n        <table>\n          <thead>\n            <tr>\n              <th>Actif<\/th>\n              <th>Concentration<\/th>\n              <th>Justification<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td><strong>Glabridine<\/strong><\/td>\n              <td>0,1\u20130,3 % d'actif<\/td>\n              <td>Dual action: tyrosinase inhibition + COX\/PGE\u2082 modulation<\/td>\n            <\/tr>\n            <tr>\n              <td>Niacinamide<\/td>\n              <td>4\u20135%<\/td>\n              <td>Melanosome transfer inhibition; additional anti-inflammatory<\/td>\n            <\/tr>\n            <tr>\n              <td>Totarol 99 %<\/td>\n              <td>0,05\u20130,1 %<\/td>\n              <td>Antibacterial (helps reduce acne-related inflammatory trigger); antioxidant<\/td>\n            <\/tr>\n            <tr>\n              <td>Tocoph\u00e9rol<\/td>\n              <td>0,2\u20130,5 %<\/td>\n              <td>Antioxidant protection for glabridin; additional soothing<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <p><strong>Cible de pH :<\/strong> 4.5\u20135.5 \u00a0|&nbsp; <strong>Conditionnement:<\/strong> Opaque, airless<\/p>\n\n      <h3>M\u00e9lasma<\/h3>\n\n      <div class=\"table-wrap\">\n        <table>\n          <thead>\n            <tr>\n              <th>Actif<\/th>\n              <th>Concentration<\/th>\n              <th>Justification<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td><strong>Glabridine<\/strong><\/td>\n              <td>0.1\u20130.5% active<\/td>\n              <td>Tyrosinase inhibition + upstream inflammatory signal modulation<\/td>\n            <\/tr>\n            <tr>\n              <td>Acide tranexamique (TXA)<\/td>\n              <td>2\u20135 %<\/td>\n              <td>Plasminogen pathway inhibition \u2014 addresses keratinocyte\u2013melanocyte crosstalk specific to melasma<\/td>\n            <\/tr>\n            <tr>\n              <td>Niacinamide<\/td>\n              <td>2\u20134 %<\/td>\n              <td>Downstream melanosome transfer inhibition<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <p>For detailed TXA + glabridin system design, see: <a href=\"https:\/\/glabridinchina.com\/fr\/glabridin-tranexamic-acid-txa-different-mechanisms-complementary-benefits\/\">Glabridine et acide tranexamique : m\u00e9canismes diff\u00e9rents, b\u00e9n\u00e9fices compl\u00e9mentaires<\/a>.<\/p>\n\n      <h3>Solar Lentigines \/ Diffuse UV Dyschromia<\/h3>\n\n      <div class=\"table-wrap\">\n        <table>\n          <thead>\n            <tr>\n              <th>Actif<\/th>\n              <th>Concentration<\/th>\n              <th>Justification<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td><strong>Glabridine<\/strong><\/td>\n              <td>0.05\u20130.2% active<\/td>\n              <td>Tyrosinase inhibition for melanin synthesis reduction<\/td>\n            <\/tr>\n            <tr>\n              <td>Alpha-arbutine<\/td>\n              <td>1\u20132 %<\/td>\n              <td>Additional tyrosinase inhibition; high stability; complementary to glabridin<\/td>\n            <\/tr>\n            <tr>\n              <td>Niacinamide<\/td>\n              <td>2\u20135 %<\/td>\n              <td>Melanosome transfer inhibition; multi-benefit (barrier, sebum, brightening)<\/td>\n            <\/tr>\n            <tr>\n              <td>AHA (lactic acid or mandelic acid)<\/td>\n              <td>5\u201310 %<\/td>\n              <td>Accelerates pigment clearance from existing keratinocytes<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <h2>The Licorice Family: Huatai's Full Portfolio<\/h2>\n\n      <p>Huatai's licorice extraction expertise extends across the full active spectrum of <em>Glycyrrhiza glabra<\/em> \u2014 providing formulators with the option to build comprehensive licorice-derived systems:<\/p>\n\n      <div class=\"table-wrap\">\n        <table>\n          <thead>\n            <tr>\n              <th>Ingr\u00e9dient<\/th>\n              <th>Fonction<\/th>\n              <th>Key Mechanism<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td><strong>Glabridine<\/strong> (40% \/ 90% \/ 98%)<\/td>\n              <td>Actif \u00e9claircissant principal<\/td>\n              <td>Non-competitive tyrosinase inhibition + COX\/PGE\u2082 anti-inflammatory modulation<\/td>\n            <\/tr>\n            <tr>\n              <td><strong>Licochalcone A<\/strong> (20% \/ 70% \/ 95%)<\/td>\n              <td>Anti-inflammatory + supporting brightening<\/td>\n              <td>COX inhibition; supports acne and rosacea-associated PIH formulas<\/td>\n            <\/tr>\n            <tr>\n              <td><strong>Glycyrrhizate Dipotassique (DPG)<\/strong><\/td>\n              <td>Soothing \/ anti-inflammatory<\/td>\n              <td>Surface soothing; pH buffering; reduces irritation potential in active-heavy formulas<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <p>A formula combining glabridin + licochalcone A + DPG delivers multi-level licorice activity: deep enzymatic brightening, surface soothing, and anti-inflammatory coverage from melanocyte signaling to surface keratinocyte response.<\/p>\n\n      <h2>Formulator Decision Framework<\/h2>\n\n      <div class=\"table-wrap\">\n        <table>\n          <thead>\n            <tr>\n              <th>Priority<\/th>\n              <th>Approche recommand\u00e9e<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>Maximum brightening efficacy<\/td>\n              <td>Glabridin (0.1\u20130.5% active) as primary; niacinamide 4\u20135%; COSMOS-certified grades if clean beauty required<\/td>\n            <\/tr>\n            <tr>\n              <td>PIH-specific (acne, eczema, post-procedure)<\/td>\n              <td>Glabridin + Totarol 99% + niacinamide; target pH 4.5\u20135.5<\/td>\n            <\/tr>\n            <tr>\n              <td>Melasma-targeted<\/td>\n              <td>Glabridin + TXA + niacinamide; three-intercept cascade<\/td>\n            <\/tr>\n            <tr>\n              <td>Clean beauty \/ COSMOS-certified<\/td>\n              <td>40%, 90%, or 98% COSMOS-certified glabridin; licochalcone A COSMOS-certified grades<\/td>\n            <\/tr>\n            <tr>\n              <td>Cost-sensitive, broad market<\/td>\n              <td>40% reddish-brown powder + niacinamide; cost-effective base system<\/td>\n            <\/tr>\n            <tr>\n              <td>Oil-phase serum or anhydrous system<\/td>\n              <td><a href=\"https:\/\/glabridinchina.com\/fr\/produit\/oil-soluble-glabridin-90\/\">90 % de glabridine liposoluble<\/a> (approximately 0.2% in finished formulation)<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <div class=\"callout\">\n        <p>Chaque lot est exp\u00e9di\u00e9 avec COA, TDS et SDS\/MSDS. Tests suppl\u00e9mentaires disponibles sur demande.<\/p>\n      <\/div>\n\n      <!-- Related -->\n      <div class=\"related-section\">\n        <h2>Ressources connexes<\/h2>\n        <div class=\"related-links\">\n          <a class=\"related-link\" href=\"https:\/\/glabridinchina.com\/fr\/glabridin\/\">\n            <span>Guide de la Glabridine pour la Formulation Cosm\u00e9tique \u2014 R\u00e9f\u00e9rence Technique Compl\u00e8te<br>\n            <small style=\"color:var(--color-text-muted);font-weight:400\">Complete mechanism, grade matrix, and synergy protocols<\/small><\/span>\n            <span class=\"related-link-arrow\">\u2192<\/span>\n          <\/a>\n          <a class=\"related-link\" href=\"https:\/\/glabridinchina.com\/fr\/glabridin-vs-hydroquinone-safety-efficacy-and-formulation-alternatives\/\">\n            <span>Glabridine vs Hydroquinone : S\u00e9curit\u00e9, Efficacit\u00e9 et Alternatives de Formulation<br>\n            <small style=\"color:var(--color-text-muted);font-weight:400\">HQ replacement system design<\/small><\/span>\n            <span class=\"related-link-arrow\">\u2192<\/span>\n          <\/a>\n          <a class=\"related-link\" href=\"https:\/\/glabridinchina.com\/fr\/glabridin-tranexamic-acid-txa-different-mechanisms-complementary-benefits\/\">\n            <span>Glabridine et acide tranexamique : m\u00e9canismes diff\u00e9rents, b\u00e9n\u00e9fices compl\u00e9mentaires<br>\n            <small style=\"color:var(--color-text-muted);font-weight:400\">Melasma system design<\/small><\/span>\n            <span class=\"related-link-arrow\">\u2192<\/span>\n          <\/a>\n          <a class=\"related-link\" href=\"https:\/\/glabridinchina.com\/fr\/post-acne-pih-repair-combining-glabridin-and-totarol\/\">\n            <span>R\u00e9paration des marques post-acn\u00e9 (PIH) : Combinaison de la glabridine et du totarol<br>\n            <small style=\"color:var(--color-text-muted);font-weight:400\">Full PIH system design with Totarol<\/small><\/span>\n            <span class=\"related-link-arrow\">\u2192<\/span>\n          <\/a>\n        <\/div>\n      <\/div>\n\n      <!-- CTA -->\n      <div class=\"cta-box\">\n        <div class=\"cta-box-text\">\n          <strong>Demander des \u00e9chantillons, un COA ou une consultation technique<\/strong>\n          glabridinchina.com \u00b7 jelly@huataibio.com \u00b7 +86 17868678161\n        <\/div>\n        <a class=\"cta-btn\" href=\"https:\/\/glabridinchina.com\/fr\/nous-contacter\/\">Contactez-nous \u2192<\/a>\n      <\/div>\n\n      <!-- References -->\n      <div class=\"references\">\n        <h2>R\u00e9f\u00e9rences<\/h2>\n        <ol>\n          <li>Nerya O, Vaya J, Musa R, Izrael S, Ben-Arie R, Tamir S. Glabrene et isoliquiritig\u00e9nine comme inhibiteurs de la tyrosinase \u00e0 partir de racines de r\u00e9glisse. <em>Journal of Agricultural and Food Chemistry<\/em>, 51(5), 1201\u20131207, 2003. DOI: 10.1021\/jf020935u.<\/li>\n          <li>Yokota T, Nishio H, Kubota Y, Mizoguchi M. L'effet inhibiteur de la glabridine extraite de la r\u00e9glisse sur la m\u00e9lanogen\u00e8se et l'inflammation. <em>Pigment Cell Research<\/em>, 11(6), 355\u2013361, 1998. DOI: 10.1111\/j.1600-0749.1998.tb00494.x.<\/li>\n          <li>Hakozaki T, Minwalla L, Zhuang J, et al. L'effet de la niacinamide sur la r\u00e9duction de la pigmentation cutan\u00e9e et la suppression du transfert des m\u00e9lanosomes. <em>Dermatologie britannique<\/em>, 147(1), 20\u201331, 2002. DOI : 10.1046\/j.1365-2133.2002.04834.x.<\/li>\n          <li>Maeda K, Nishino H. M\u00e9canisme de l'effet inhibiteur de l'acide tranexamique sur la m\u00e9lanogen\u00e8se dans les m\u00e9lanocytes humains cultiv\u00e9s en pr\u00e9sence de milieu conditionn\u00e9 par les k\u00e9ratinocytes. <em>Journal de la science de la sant\u00e9<\/em>, 53(4), 389\u2013396, 2007. DOI : 10.1248\/jhs.53.389.<\/li>\n          <li>European Commission. Commission Regulation (EU) 2023\/1490 of 20 July 2023 amending Regulation (EC) No 1223\/2009 as regards kojic acid. Official Journal of the European Union, 2023.<\/li>\n          <li>Guangdong Weipu Testing Technology Co., Ltd. (CMA accredited, No. 202119135666). Report No. GZA01-23080632-JC-01. Human patch test, 0.03% Glabridin. Commissioned by Huatai Bio-Fine Chemical.<\/li>\n        <\/ol>\n      <\/div>\n\n      <div class=\"article-footer\">\n        <p>For professional cosmetic formulators and R&amp;D audiences. Does not constitute regulatory advice.<br>\n        Publi\u00e9 en 2026 \u2014 Huatai Bio-Fine Chemical, Xi'an, Shaanxi, Chine.<\/p>\n      <\/div>\n\n    <\/article>\n  <\/div>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Application Glabridin Hyperpigmentation Formulator\u2019s Guide Hyperpigmentation is not a single condition \u2014 it is a category that encompasses PIH, melasma, solar lentigines, and diffuse UV-induced\u2026<\/p>","protected":false},"author":8,"featured_media":7130,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[411],"tags":[],"class_list":["post-15319","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-application-guides"],"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>Best Brightening Actives for Hyperpigmentation Formulas: A Formulator&#039;s Comparison Guide - 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