{"id":1897,"date":"2025-12-25T19:23:55","date_gmt":"2025-12-25T18:23:55","guid":{"rendered":"https:\/\/www.laboratoireslelegard.com\/?post_type=product&#038;p=1897"},"modified":"2025-12-25T19:33:09","modified_gmt":"2025-12-25T18:33:09","slug":"patch-test","status":"publish","type":"product","link":"https:\/\/www.laboratoireslelegard.com\/en\/product\/patch-test\/","title":{"rendered":"Patch Test \u2013 Skin tolerance under dermatological control"},"content":{"rendered":"<div data-elementor-type=\"product-post\" data-elementor-id=\"1897\" class=\"elementor elementor-1897\" data-elementor-post-type=\"product\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-06bf5d0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"06bf5d0\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6f2a6e1\" data-id=\"6f2a6e1\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7d75f8c elementor-widget elementor-widget-text-editor\" data-id=\"7d75f8c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"w-full\"><div class=\"progressive-markdown-content\"><div class=\"w-full\"><div class=\"progressive-markdown-content\"><div class=\"content-visibility-auto\"><p class=\"western\" align=\"justify\">The patch test is used to assess the skin tolerance of a cosmetic product and confirm that it does not cause irritation. This test, which is essential for the safety of products marketed in Switzerland and the European Union, involves applying small amounts of the formula to dermatological patches specially designed to maintain controlled and constant contact with the skin. These patches are then placed on the back or forearm of a panel of 10 to 20 volunteers representing different skin types, in accordance with European and Swiss regulatory requirements (OCos\/OSAV).<\/p><p class=\"western\">The patches remain in place for 24 to 48 hours, during which time the tested area remains protected but in direct contact with the product. When they are removed, a dermatologist carefully examines the skin for any signs of intolerance: redness, irritation, itching, swelling, or allergic reactions. In some cases, a second check is carried out 24 to 72 hours later to identify any delayed reactions, which is particularly important for validating safety in accordance with Swiss and European standards.<\/p><p class=\"western\">The patch test is therefore an essential step in demonstrating the skin safety of a cosmetic product before it is placed on the market, and it is directly integrated into the DIP\/PIF, which is mandatory in Europe and Switzerland.<\/p><p class=\"western\" align=\"justify\"><br \/><br \/><\/p><p class=\"western\" align=\"justify\"><br \/><br \/><\/p><p class=\"western\" align=\"justify\"><br \/><br \/><\/p><p class=\"western\" align=\"justify\"><br \/><br \/><\/p><p class=\"western\" align=\"justify\"><br \/><br \/><\/p><p class=\"western\" align=\"justify\"><br \/><br \/><\/p><p class=\"western\"><b>Test on sensitive skin<\/b><\/p><p class=\"western\" align=\"justify\">Sensitive skin testing is designed to verify a product's tolerance on volunteers with particularly reactive skin that is prone to redness or discomfort. This analysis is highly valued in the Swiss market, where consumers and authorities demand solid evidence of a product's skin compatibility, particularly for natural or dermatological skincare products.<\/p><p class=\"western\">A panel of volunteers with sensitive skin is selected, and the product is applied according to a specific protocol: a single application, daily application, or repeated application over several days or weeks, depending on the product category being evaluated. Dermatologists regularly check the condition of the skin, looking for any tingling, burning, tightness, redness, or swelling. As with patch testing, post-exposure monitoring may be carried out to identify any delayed reactions. This test confirms that the product can be used without discomfort even by the most reactive skin types, providing an additional level of safety and confidence.<\/p><p class=\"western\" align=\"justify\"><br \/><br \/><\/p><br \/><hr \/><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Le patch test permet d\u2019\u00e9valuer la tol\u00e9rance cutan\u00e9e d\u2019un produit cosm\u00e9tique et de confirmer son absence d\u2019effet irritant. Ce test, essentiel \u00e0 la s\u00e9curit\u00e9 des produits commercialis\u00e9s en Suisse comme dans l\u2019Union Europ\u00e9enne, consiste \u00e0 appliquer de petites quantit\u00e9s de la formule sur des patchs dermatologiques sp\u00e9cialement con\u00e7us pour maintenir un contact contr\u00f4l\u00e9 et constant [&hellip;]<\/p>","protected":false},"featured_media":1742,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[151],"product_tag":[113,116,112,114,115,117],"class_list":["post-1897","product","type-product","status-publish","has-post-thumbnail","product_cat-analyse","product_tag-activite","product_tag-activity","product_tag-analyse","product_tag-eau","product_tag-micro-organismes","product_tag-water","first","instock","shipping-taxable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Patch Test: Tol\u00e9rance cutan\u00e9e sous contr\u00f4le dermatologique<\/title>\n<meta name=\"description\" content=\"Patch test: \u00e9value la tol\u00e9rance cutan\u00e9e, y compris les peaux sensibles, garantissant la tol\u00e9rance des cosm\u00e9tiques pour le march\u00e9 suisse, UK et europ\u00e9en.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.laboratoireslelegard.com\/en\/product\/patch-test\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Patch Test: Tol\u00e9rance cutan\u00e9e sous contr\u00f4le dermatologique\" \/>\n<meta property=\"og:description\" content=\"Patch test: \u00e9value la tol\u00e9rance cutan\u00e9e, y compris les peaux sensibles, garantissant la tol\u00e9rance des cosm\u00e9tiques pour le march\u00e9 suisse, UK et europ\u00e9en.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.laboratoireslelegard.com\/en\/product\/patch-test\/\" \/>\n<meta property=\"og:site_name\" content=\"Laboratoires Lel\u00e9gard\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-25T18:33:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.laboratoireslelegard.com\/wp-content\/uploads\/2023\/04\/patch-test.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.laboratoireslelegard.com\/produit\/patch-test\/\",\"url\":\"https:\/\/www.laboratoireslelegard.com\/produit\/patch-test\/\",\"name\":\"Patch Test: Tol\u00e9rance cutan\u00e9e sous contr\u00f4le dermatologique\",\"isPartOf\":{\"@id\":\"https:\/\/www.laboratoireslelegard.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.laboratoireslelegard.com\/produit\/patch-test\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.laboratoireslelegard.com\/produit\/patch-test\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.laboratoireslelegard.com\/wp-content\/uploads\/2023\/04\/patch-test.jpg\",\"datePublished\":\"2025-12-25T18:23:55+00:00\",\"dateModified\":\"2025-12-25T18:33:09+00:00\",\"description\":\"Patch test: \u00e9value la tol\u00e9rance cutan\u00e9e, y compris les peaux sensibles, garantissant la tol\u00e9rance des cosm\u00e9tiques pour le march\u00e9 suisse, UK et europ\u00e9en.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.laboratoireslelegard.com\/produit\/patch-test\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.laboratoireslelegard.com\/produit\/patch-test\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.laboratoireslelegard.com\/produit\/patch-test\/#primaryimage\",\"url\":\"https:\/\/www.laboratoireslelegard.com\/wp-content\/uploads\/2023\/04\/patch-test.jpg\",\"contentUrl\":\"https:\/\/www.laboratoireslelegard.com\/wp-content\/uploads\/2023\/04\/patch-test.jpg\",\"width\":1920,\"height\":1080,\"caption\":\"patch-test\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.laboratoireslelegard.com\/produit\/patch-test\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/www.laboratoireslelegard.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Boutique\",\"item\":\"https:\/\/www.laboratoireslelegard.com\/prestations-formations\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Patch Test &#8211; 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