{"id":8985,"date":"2025-05-01T19:57:23","date_gmt":"2025-05-01T16:57:23","guid":{"rendered":"https:\/\/hdlab.gr\/cosmetics-dermocosmetics\/stability-testing-%ce%b4%ce%bf%ce%ba%ce%b9%ce%bc%ce%b5%cf%83-%cf%83%cf%84%ce%b1%ce%b8%ce%b5%cf%81%ce%bf%cf%84%ce%b7%cf%84%ce%b1%cf%83-%ce%ba%ce%b1%ce%bb%ce%bb%cf%85%ce%bd%cf%84%ce%b9%ce%ba%cf%89\/"},"modified":"2026-03-23T10:20:51","modified_gmt":"2026-03-23T08:20:51","slug":"cosmetic-stability-testing","status":"publish","type":"page","link":"https:\/\/hdlab.gr\/en\/cosmetics-dermocosmetics\/cosmetic-stability-testing\/","title":{"rendered":"Cosmetic Stability Testing (ISO\/TR 18811)"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_empty_space][\/vc_column][\/vc_row][vc_section full_width=&#8221;stretch_row&#8221; css=&#8221;.vc_custom_1532167956213{margin-top: 0px !important;margin-bottom: 0px !important;padding-top: 20px !important;padding-bottom: 66px !important;}&#8221; el_class=&#8221;background-position-top-custom&#8221;][vc_row gap=&#8221;35&#8243;][vc_column width=&#8221;5\/12&#8243; 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Development (R&#038;D) \u2013 From Concept to Market<\/a><\/li>\n\t<li id=\"menu-item-9099\" class=\"menu-item menu-item-type-post_type menu-item-object-page rt-mega-menu-hover item-9099\"><a  href=\"https:\/\/hdlab.gr\/en\/cosmetics-dermocosmetics\/cosmetic-product-safety-assessment\/\">Cosmetic Product Safety Assessment (CPSR) \u2013 Regulation (EC) No 1223\/2009<\/a><\/li>\n\t<li id=\"menu-item-9100\" class=\"menu-item menu-item-type-post_type menu-item-object-page rt-mega-menu-hover item-9100\"><a  href=\"https:\/\/hdlab.gr\/en\/cosmetics-dermocosmetics\/microbiological-testing-cosmetics\/\">Microbiological Testing of Cosmetic Products (ISO 17516)<\/a><\/li>\n\t<li id=\"menu-item-9101\" class=\"menu-item menu-item-type-post_type menu-item-object-page rt-mega-menu-hover item-9101\"><a  href=\"https:\/\/hdlab.gr\/en\/cosmetics-dermocosmetics\/preservative-efficacy-testing\/\">Preservative Efficacy Testing (Challenge Test \u2013 ISO 11930)<\/a><\/li>\n\t<li id=\"menu-item-9102\" class=\"menu-item menu-item-type-post_type menu-item-object-page rt-mega-menu-hover item-9102\"><a  href=\"https:\/\/hdlab.gr\/en\/cosmetics-dermocosmetics\/cosmetic-stability-testing\/\">Cosmetic Stability Testing (ISO\/TR 18811)<\/a><\/li>\n\t<li id=\"menu-item-9103\" class=\"menu-item menu-item-type-post_type menu-item-object-page rt-mega-menu-hover item-9103\"><a  href=\"https:\/\/hdlab.gr\/en\/cosmetics-dermocosmetics\/patch-test-cosmetics\/\">Patch Test &#8211; 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From concept to compliant market launch.&#8221; font_container=&#8221;tag:p|font_size:15px|text_align:left|color:%23434343|line_height:26px&#8221; use_theme_fonts=&#8221;yes&#8221; css_animation=&#8221;none&#8221; css=&#8221;.vc_custom_1774254039971{margin-top: 0px !important;margin-bottom: 18px !important;padding-top: 0px !important;padding-bottom: 0px !important;}&#8221;]\r<!-- radiantthemes-custom-button -->\r<div class=\"radiantthemes-custom-button hover-style-one rt1332348720  letter-spacing-0 font-weight-medium\"  data-button-direction=\"left\" data-button-fullwidth=\"false\" ><a style=\" color: #ffffff; line-height: 26px; font-size: 14px;\" class=\"radiantthemes-custom-button-main  vc_custom_1774254048174\" href=\"https:\/\/hdlab.gr\/en\/contact\/\"  title=\"\u0395\u03c0\u03b9\u03ba\u03bf\u03b9\u03bd\u03c9\u03bd\u03af\u03b1\" target=\"_self\"><div class=\"placeholder\">Contact us<\/div><\/a><\/div>\r<!-- radiantthemes-custom-button -->\r[\/vc_column_inner][\/vc_row_inner][\/vc_column][vc_column width=&#8221;7\/12&#8243; css=&#8221;.vc_custom_1532164210873{margin-top: 0px !important;margin-bottom: 0px !important;padding-top: 0px !important;padding-right: 0px !important;padding-bottom: 0px !important;padding-left: 0px !important;}&#8221; offset=&#8221;vc_col-lg-8 vc_col-md-8 vc_col-xs-12&#8243;][vc_custom_heading text=&#8221;Cosmetic Stability Testing (ISO\/TR 18811)&#8221; font_container=&#8221;tag:h2|font_size:30px|text_align:left|color:%232d2d2d|line_height:40px&#8221; use_theme_fonts=&#8221;yes&#8221; css_animation=&#8221;none&#8221; css=&#8221;.vc_custom_1773753459443{margin-top: 0px !important;margin-bottom: 0px !important;padding-top: 0px !important;padding-bottom: 0px !important;}&#8221;][vc_empty_space height=&#8221;15px&#8221;][vc_separator][vc_column_text css=&#8221;&#8221; el_class=&#8221;hdlabtext&#8221;]Stability testing allows the evaluation of product behaviour under storage and use conditions, as well as the <strong>preliminary determination of shelf life<\/strong>.<\/p>\n<p>Studies are conducted in line with <strong>ISO\/TR 18811:2018 \u2013 Guidelines on stability testing<\/strong>.<\/p>\n<p><strong>Scope of Stability Studies<\/strong><\/p>\n<p><strong>Physicochemical Stability<\/strong><\/p>\n<ul>\n<li>pH, viscosity, organoleptic properties, colour stability<\/li>\n<li>Accelerated conditions: <strong>40\u00b0C \u00b1 2\u00b0C \/ 75% RH \u00b1 5%<\/strong><\/li>\n<li>Freeze\u2013thaw cycles<\/li>\n<li>Photostability (UV exposure)<\/li>\n<\/ul>\n<p><strong>Microbiological Stability<\/strong><\/p>\n<ul>\n<li>Repeated microbiological testing at defined time points<\/li>\n<li>Assessment of microbial growth risks in case of preservative failure<\/li>\n<\/ul>\n<p><strong>Packaging Compatibility<\/strong><\/p>\n<ul>\n<li>Formula\u2013packaging interactions<\/li>\n<li>Evaluation of moisture loss and volatile substance migration<\/li>\n<\/ul>\n<p>Stability documentation forms an <strong>integral part of the Product Information File (PIF)<\/strong>.[\/vc_column_text][\/vc_column][\/vc_row][\/vc_section]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_empty_space][\/vc_column][\/vc_row][vc_section full_width=&#8221;stretch_row&#8221; css=&#8221;.vc_custom_1532167956213{margin-top: 0px !important;margin-bottom: 0px !important;padding-top: 20px !important;padding-bottom: 66px !important;}&#8221; el_class=&#8221;background-position-top-custom&#8221;][vc_row gap=&#8221;35&#8243;][vc_column width=&#8221;5\/12&#8243; css=&#8221;.vc_custom_1531893806780{padding-left: 20px !important;}&#8221; offset=&#8221;vc_col-lg-4 vc_col-md-4 vc_col-xs-12&#8243;][vc_row_inner css=&#8221;.vc_custom_1532164808767{margin-top: 0px !important;margin-bottom: 0px !important;border-top-width: 1px !important;border-right-width: 1px !important;border-bottom-width: 1px !important;border-left-width: 1px !important;padding-top: 0px !important;padding-right: 0px !important;padding-bottom: 0px !important;padding-left: 0px !important;border-left-color: #dfeaf2 !important;border-left-style: solid !important;border-right-color: #dfeaf2 !important;border-right-style: solid !important;border-top-color: #dfeaf2 !important;border-top-style: solid !important;border-bottom-color: #dfeaf2 !important;border-bottom-style: [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":8958,"menu_order":5,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-8985","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Cosmetic Stability Testing (ISO\/TR 18811) | HDLab<\/title>\n<meta name=\"description\" content=\"Stability testing allows the evaluation of product behaviour under storage and use conditions, as well as the preliminary determination of shelf life.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hdlab.gr\/en\/cosmetics-dermocosmetics\/cosmetic-stability-testing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cosmetic Stability Testing (ISO\/TR 18811) | HDLab\" \/>\n<meta property=\"og:description\" content=\"Stability testing allows the evaluation of product behaviour under storage and use conditions, as well as the preliminary determination of shelf life.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/hdlab.gr\/en\/cosmetics-dermocosmetics\/cosmetic-stability-testing\/\" \/>\n<meta property=\"og:site_name\" content=\"HD Lab\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-23T08:20:51+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/hdlab.gr\/wp-content\/uploads\/2025\/05\/hdlab-main.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/hdlab.gr\\\/en\\\/cosmetics-dermocosmetics\\\/cosmetic-stability-testing\\\/\",\"url\":\"https:\\\/\\\/hdlab.gr\\\/en\\\/cosmetics-dermocosmetics\\\/cosmetic-stability-testing\\\/\",\"name\":\"Cosmetic Stability Testing (ISO\\\/TR 18811) | HDLab\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/hdlab.gr\\\/#website\"},\"datePublished\":\"2025-05-01T16:57:23+00:00\",\"dateModified\":\"2026-03-23T08:20:51+00:00\",\"description\":\"Stability testing allows the evaluation of product behaviour under storage and use conditions, as well as the preliminary determination of shelf life.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/hdlab.gr\\\/en\\\/cosmetics-dermocosmetics\\\/cosmetic-stability-testing\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/hdlab.gr\\\/en\\\/cosmetics-dermocosmetics\\\/cosmetic-stability-testing\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/hdlab.gr\\\/en\\\/cosmetics-dermocosmetics\\\/cosmetic-stability-testing\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u0391\u03c1\u03c7\u03b9\u03ba\u03ae\",\"item\":\"https:\\\/\\\/hdlab.gr\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"COSMETICS &#038; 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