{"id":49750,"date":"2022-08-02T08:00:00","date_gmt":"2022-08-02T08:00:00","guid":{"rendered":"https:\/\/nailknowledge.org\/?p=49750"},"modified":"2026-06-19T15:40:54","modified_gmt":"2026-06-19T15:40:54","slug":"contaminacion-por-esmalte-de-unas","status":"publish","type":"post","link":"https:\/\/nailknowledge.org\/es\/blog\/nail-polish-contamination","title":{"rendered":"Contaminaci\u00f3n por esmalte de u\u00f1as"},"content":{"rendered":"\n<p>Is nail polish contamination a thing? Can you contaminate your nail polish by using it on someone with a nail fungus?<\/p>\n\n\n\n<p>All professional salon nail polishes are designed to be applied to normal, healthy nails and should not be applied to visibly infected nail plates. Nail polish should never be used to cover up an active nail infection of any type. Studies conducted by the Nail Manufacturers Council on Safety (NMC), which is a part of the Professional Beauty Association, demonstrated that nail polish does not harbor infectious bacteria or fungi when properly used.&nbsp;&nbsp;In other words, disease-causing organisms, which are called pathogens, cannot live or grow inside nail polish. This includes fungi, bacteria, and viruses. Why? There are three main reasons:<\/p>\n\n\n\n<p>First, nail polish contains no water, and all pathogens must have water to survive. <br>Second, nail polish contains no nutrients or food that pathogens can use. Like all living things, including pathogens, nutrients are required for growth and reproduction. <br>Third, the solvents in the nail polish attack and break apart the pathogens&#8217; cell walls which kills them with amazing efficiency.&nbsp;&nbsp;The studies conducted by the Nail Manufacturers Council on Safety confirmed this. Their study demonstrated that nail polish will not harbor pathogens and that nail polish aggressively kills common salon pathogens that could be accidentally introduced into the polish. This indicates that nail polish can be shared with other clients in the salon without concern.&nbsp;&nbsp;However, this is true for healthy nails that aren\u2019t visibly infected.&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-group has-background nk-grp-1\" style=\"background-color:#edf3ea;margin-top:var(--wp--preset--spacing--60);margin-bottom:var(--wp--preset--spacing--60);padding-top:0;padding-right:0;padding-bottom:0;padding-left:0;border-radius:10px 10px 10px 10px;overflow:hidden\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-container-core-group-is-layout-a0fd2145 wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image size-large desktop-only\" style=\"margin-top:0;margin-bottom:0\"><img loading=\"eager\" fetchpriority=\"high\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-web-1024x576.webp\" alt=\"\" class=\"wp-image-171119\" srcset=\"https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-web-1024x576.webp 1024w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-web-300x169.webp 300w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-web-768x432.webp 768w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-web-1536x864.webp 1536w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-web-18x10.webp 18w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-web-651x366.webp 651w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-web-600x338.webp 600w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-web.webp 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large mobile-only\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-1024x1024.webp\" alt=\"\" class=\"wp-image-171120\" srcset=\"https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-1024x1024.webp 1024w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-300x300.webp 300w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-150x150.webp 150w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-768x768.webp 768w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-12x12.webp 12w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-75x75.webp 75w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-651x651.webp 651w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-100x100.webp 100w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety-600x600.webp 600w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/06\/newsletter-health-and-safety.webp 1254w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<iframe\n  data-src=\"https:\/\/api.leadconnectorhq.com\/widget\/form\/QlwX91ooJB32ioTrFomD?tag_category=health_safety\"\n  id=\"inline-QlwX91ooJB32ioTrFomD\"\n  style=\"width:100%;height:226px;border:none;border-radius:8px\"\n  title=\"Form 7\">\n<\/iframe>\n<script>\n(function () {\n  var P = \"[iFrameSizer]\", f = document.getElementById(\"inline-QlwX91ooJB32ioTrFomD\"), sized, loaded;\n  if (!f) return;\n\n  function ping() {\n    if (f.contentWindow)\n      f.contentWindow.postMessage(P + [f.id,8,false,false,32,true,true,null,\"offset\",null,null,0].join(\":\"), \"*\");\n  }\n  function load() {\n    if (loaded) return; loaded = true;\n    f.src = f.dataset.src;                       \/\/ fetch happens here, not before\n    f.addEventListener(\"load\", ping);\n    var n = 0, t = setInterval(function () { ping(); if (sized || ++n > 20) clearInterval(t); }, 250);\n  }\n\n  window.addEventListener(\"message\", function (e) {\n    if (typeof e.data !== \"string\" || e.data.indexOf(P) !== 0) return;\n    var p = e.data.slice(P.length).split(\":\");\n    if (p[0] !== f.id) return;\n    var h = parseFloat(p[1]);\n    if (h >= 0) { f.style.height = (h + 5) + \"px\"; sized = true; }\n  });\n\n  \/\/ Defer the third-party request until after load + idle, then only near the viewport\n  function arm() {\n    \"IntersectionObserver\" in window\n      ? new IntersectionObserver(function (en, o) {\n          if (en[0].isIntersecting) { load(); o.disconnect(); }\n        }, { rootMargin: \"300px\" }).observe(f)\n      : load();\n  }\n  var idle = window.requestIdleCallback || function (cb) { setTimeout(cb, 200); };\n  document.readyState === \"complete\" ? idle(arm) : window.addEventListener(\"load\", function () { idle(arm); });\n})();\n<\/script>\n<\/div><\/div>\n<style>@media(max-width:768px){.nk-grp-1{border-radius:0!important}}<\/style>\n\n\n\n\n<p>Here\u2019s an important word of caution. These study results may not apply when nail plates are visibly infected. Visible infections can contain tremendous amounts of bacteria or fungi. Thousands of times more than would ever be found on a natural nail plate with a healthy appearance. This means that visible infections are in a class of their own and should be carefully avoided. Therefore, nail polish contamination is possible.<\/p>\n\n\n\n<p>So, to be on the safe side, any use of nail polish on visibly infected nail plates should also be avoided.\u00a0\u00a0In other words, if you accidentally brush over a visible infection, my own recommendation is the same as that of the Nail Manufacturers Council on Safety:\u00a0\u00a0Out of an abundance of caution and keeping the client\u2019s protection in mind, the nail polish bottle should be properly discarded into the trash and not given to the client either.<\/p>\n\n\n\n<p>While sharing nail polish with healthy individuals during a salon visit shouldn&#8217;t pose a contamination risk, it&#8217;s important to consider another factor: <a href=\"https:\/\/nailknowledge.org\/blog\/the-shelf-life-of-nail-polish-whats-the-deal\">nail polish shelf life<\/a>. Nail polish, like any other beauty product, does have a lifespan. Though unopened bottles can last upwards of 5-8 years, once opened, their effectiveness and safety can diminish over time. Using expired polish may lead to streaky application, chipping, or even skin irritation. To ensure optimal results and hygiene, it&#8217;s crucial to regularly check your polish collection and discard anything past its prime.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Is nail polish contamination a thing? Can you contaminate your nail polish by using it on someone with a nail fungus? All professional salon nail polishes are designed to be applied to normal, healthy nails and should not be applied to visibly infected nail plates. Nail polish should never be used to cover up an [&hellip;]<\/p>\n","protected":false},"author":51,"featured_media":49751,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[63],"tags":[],"class_list":{"0":"post-49750","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-health-and-safety","8":"entry"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nail polish contamination - NailKnowledge<\/title>\n<meta name=\"description\" content=\"Is nail polish contamination a thing? 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Can you contaminate your nail polish by using it on someone with a nail fungus?\" \/>\n<meta property=\"og:url\" content=\"https:\/\/nailknowledge.org\/es\/blog\/contaminacion-por-esmalte-de-unas\" \/>\n<meta property=\"og:site_name\" content=\"NailKnowledge\" \/>\n<meta property=\"article:published_time\" content=\"2022-08-02T08:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-19T15:40:54+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/nailknowledge.org\/wp-content\/uploads\/2022\/07\/Nail-polish-contamination.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"720\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Doug Schoon\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Doug Schoon\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/nailknowledge.org\\\/blog\\\/nail-polish-contamination#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/nailknowledge.org\\\/blog\\\/nail-polish-contamination\"},\"author\":{\"name\":\"Doug Schoon\",\"@id\":\"https:\\\/\\\/nailknowledge.org\\\/#\\\/schema\\\/person\\\/8227363b2e407fcd62c65e4cd6aa9d70\"},\"headline\":\"Nail polish contamination\",\"datePublished\":\"2022-08-02T08:00:00+00:00\",\"dateModified\":\"2026-06-19T15:40:54+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/nailknowledge.org\\\/blog\\\/nail-polish-contamination\"},\"wordCount\":500,\"publisher\":{\"@id\":\"https:\\\/\\\/nailknowledge.org\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/nailknowledge.org\\\/blog\\\/nail-polish-contamination#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/nailknowledge.org\\\/wp-content\\\/uploads\\\/2022\\\/07\\\/Nail-polish-contamination.jpg\",\"articleSection\":[\"Health and Safety\"],\"inLanguage\":\"es\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/nailknowledge.org\\\/blog\\\/nail-polish-contamination\",\"url\":\"https:\\\/\\\/nailknowledge.org\\\/blog\\\/nail-polish-contamination\",\"name\":\"Nail polish contamination - NailKnowledge\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/nailknowledge.org\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/nailknowledge.org\\\/blog\\\/nail-polish-contamination#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/nailknowledge.org\\\/blog\\\/nail-polish-contamination#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/nailknowledge.org\\\/wp-content\\\/uploads\\\/2022\\\/07\\\/Nail-polish-contamination.jpg\",\"datePublished\":\"2022-08-02T08:00:00+00:00\",\"dateModified\":\"2026-06-19T15:40:54+00:00\",\"description\":\"Is nail polish contamination a thing? 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