{"id":36967,"date":"2026-11-04T20:08:45","date_gmt":"2026-11-04T19:08:45","guid":{"rendered":"https:\/\/www.certifiedcosmetics.com\/blog\/uncategorized-sl\/razlaga-standardov-za-testiranje-uva-sevanja\/"},"modified":"2026-11-04T20:08:45","modified_gmt":"2026-11-04T19:08:45","slug":"razlaga-standardov-za-testiranje-uva-sevanja","status":"publish","type":"post","link":"https:\/\/www.certifiedcosmetics.com\/sl\/blog\/laboratorijsko-testiranje\/razlaga-standardov-za-testiranje-uva-sevanja\/","title":{"rendered":"Razlaga standardov za testiranje UVA-sevanja"},"content":{"rendered":"<p><img decoding=\"async\" class=\"wp-image-19611 alignright\" src=\"https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/uva-protection-640x640.jpg\" alt=\"\" width=\"315\" height=\"315\" srcset=\"https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/uva-protection-640x640.jpg 640w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/uva-protection-160x160.jpg 160w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/uva-protection-768x768.jpg 768w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/uva-protection-320x320.jpg 320w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/uva-protection-400x400.jpg 400w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/uva-protection-300x300.jpg 300w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/uva-protection-600x600.jpg 600w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/uva-protection-100x100.jpg 100w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/uva-protection-60x60.jpg 60w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/uva-protection-110x110.jpg 110w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/uva-protection.jpg 800w\" sizes=\"(max-width: 315px) 100vw, 315px\" \/>Za\u0161\u010dita pred soncem se pogosto povezuje s faktorjem SPF, vendar ta v prvi vrsti opisuje za\u0161\u010dito pred ultravijoli\u010dnim B (UVB) sevanjem. Son\u010dna krema, ki zagotavlja mo\u010dno za\u0161\u010dito pred UVB-sevanjem, \u0161e ne pomeni nujno, da zagotavlja tudi ustrezno za\u0161\u010dito pred ultravijoli\u010dnim A (UVA) sevanjem.<\/p>\n<p>Zato evropska priporo\u010dila glede son\u010dnih krem se osredoto\u010dajo predvsem na uravnote\u017eeno za\u0161\u010dito pred UVB- in UVA-sevanjem. Proizvajalci, ki razvijajo son\u010dne kreme ali kozmeti\u010dne izdelke z navedbo za\u0161\u010dite pred soncem, morajo zato za\u0161\u010dito pred UVA-sevanjem oceniti z ustreznimi in znanstveno priznanimi preskusnimi metodami.<\/p>\n<h2>Kaj je UVA-sevanje?<\/h2>\n<p>Ultravijoli\u010dno sevanje Sonca se obi\u010dajno deli na UVA- in UVB-sevanje.<\/p>\n<p>UVB-sevanje je tesno povezano s son\u010dnimi opeklinami in je glavna vrsta sevanja, ki se meri pri dolo\u010danju son\u010dnega za\u0161\u010ditnega faktorja (SPF).<\/p>\n<p><strong>UVA-sevanje prodre globlje v ko\u017eo<\/strong> in prispeva k <strong>prezgodnjemu staranju ko\u017ee<\/strong> ter <strong>dolgoro\u010dnim po\u0161kodbam ko\u017ee<\/strong>. Prav tako sodeluje v procesih, povezanih z razvojem ko\u017enega raka.<\/p>\n<p>Za razliko od UVB-sevanja izpostavljenost UVA-sevanju ne povzro\u010di vedno takoj\u0161nje vidne reakcije, kot je son\u010dna opeklina. Potro\u0161niki so zato lahko izpostavljeni znatnemu UVA-sevanju, ne da bi takoj opazili njegove u\u010dinke.<\/p>\n<p>Zato morajo u\u010dinkoviti izdelki za za\u0161\u010dito pred soncem zagotavljati za\u0161\u010dito v \u0161irokem spektru ultravijoli\u010dnega sevanja.<\/p>\n<h2>Zakaj so testi za UVA-\u017earke potrebni?<\/h2>\n<p>Samo vrednost SPF ne more pokazati stopnje za\u0161\u010dite pred UVA-\u017earki, ki jo zagotavlja son\u010dno mazilo.<\/p>\n<p>Dve formulaciji z enakim SPF-jem lahko zagotavljata zelo razli\u010dne stopnje za\u0161\u010dite pred UVA-\u017earki. Na u\u010dinkovitost za\u0161\u010dite pred UVA-\u017earki lahko vplivajo vrsta uporabljenih UV-filtrov, njihove koncentracije, fotostabilnost, porazdelitev znotraj formulacije ter film, ki se oblikuje na ko\u017ei.<\/p>\n<p>Preskusi z UVA-\u017earki zagotavljajo merljive dokaze o za\u0161\u010diti, ki jo nudi kon\u010dni izdelek.<\/p>\n<p>V skladu z Uredbo Komisije (EU) \u0161t. 655\/2013 morajo biti trditve o kozmeti\u010dnih izdelkih podprte z ustreznimi in preverljivimi dokazi. Zato morajo proizvajalci, ki navajajo trditve o za\u0161\u010diti pred UVA-\u017earki ali za\u0161\u010diti \u0161irokega spektra, razpolagati z ustreznimi podatki o preskusih, s katerimi lahko te trditve utemeljijo.<\/p>\n<h2>Evropske zahteve za za\u0161\u010dito pred UVA-\u017earki<\/h2>\n<p><a href=\"https:\/\/eur-lex.europa.eu\/legal-content\/EN\/TXT\/PDF\/?uri=CELEX:32006H0647\">Priporo\u010dilo Evropske komisije 2006\/647\/ES<\/a> dolo\u010da pomembno na\u010delo za uravnote\u017eeno za\u0161\u010dito pred soncem.<\/p>\n<p>Za\u0161\u010ditni faktor <strong>proti<\/strong> UVA-\u017earkom mora zna\u0161ati <strong>vsaj eno tretjino navedenega SPF.<\/strong><\/p>\n<p>Na primer, son\u010dna krema z oznako SPF 30 naj bi zagotavljala za\u0161\u010ditni faktor proti UVA-\u017earkom najmanj 10. Izdelek z oznako SPF 50 naj bi zagotavljal za\u0161\u010ditni faktor proti UVA-\u017earkom najmanj pribli\u017eno 16,7.<\/p>\n<p>Priporo\u010dilo prav tako dolo\u010da, da mora biti <strong>kriti\u010dna valovna dol\u017eina<\/strong> najmanj 370 nanometrov.<\/p>\n<p>Ta merila naj bi zagotovila, da izdelki za za\u0161\u010dito pred soncem nudijo dovolj<strong> \u0161iroko za\u0161\u010dito<\/strong> v celotnem spektru UVA- in UVB-sevanja, namesto da bi se za\u0161\u010dita osredoto\u010dala predvsem na obmo\u010dje UVB-sevanja.<\/p>\n<h2>ISO 24443: Presku\u0161anje za\u0161\u010dite pred UVA-\u017earki in vitro<\/h2>\n<p>Eden od glavnih mednarodnih standardov, ki se uporabljajo za ocenjevanje za\u0161\u010dite pred UVA-\u017earki, je ISO 24443:2021, <em>Kozmetika \u2013 Dolo\u010danje fotoprotektivnega u\u010dinka son\u010dnih krem proti UVA-\u017earkom in vitro<\/em>.<\/p>\n<p>Ta standard dolo\u010da postopek in vitro za opredelitev za\u0161\u010dite pred UVA-sevanjem pri izdelkih za za\u0161\u010dito pred soncem. Njegov namen je pridobiti spektralno krivuljo absorpcije UV-sevanja, na podlagi katere je mogo\u010de izra\u010dunati ustrezne parametre za\u0161\u010dite pred UVA-sevanjem.<\/p>\n<p>Med preskusom se na posebej pripravljene preskusne plo\u0161\u010de nanese nadzorovana koli\u010dina son\u010dnega krema. Izdelek se skrbno razporedi, da se oblikuje reprezentativni film.<\/p>\n<p>Nato se s pomo\u010djo specializirane laboratorijske opreme izmeri prepustnost ultravijoli\u010dnega sevanja skozi plast izdelka. Vzorci so izpostavljeni tudi dolo\u010denemu odmerku UV-sevanja, da se izdelek oceni po obsevanju.<\/p>\n<p>Na podlagi pridobljenih spektralnih podatkov se dolo\u010di faktor za\u0161\u010dite pred UVA-sevanjem in vitro ter oceni u\u010dinkovitost izdelka pri za\u0161\u010diti pred UVA-sevanjem.<\/p>\n<p>Ker lahko na rezultat vplivajo tehnika nana\u0161anja, lastnosti plo\u0161\u010de, pogoji obsevanja in instrumentalne meritve, mora postopek izvesti <a href=\"https:\/\/www.certifiedcosmetics.com\/sl\/product\/preizkusanje-ucinkovitosti\/kozni-testi\/preskusanje-zascitnega-faktorja-proti-uva-zarkom-uva-pf\/\">izku\u0161en laboratorij v skladu s standardizirano metodologijo<\/a>. Standard ISO 24443:2021 posebej dolo\u010da postopek in vitro, namenjen opredelitvi za\u0161\u010dite pred UVA-sevanjem in ponovljivi dolo\u010ditvi spektralnih absorpcijskih lastnosti.<\/p>\n<h2>ISO 24442: Presku\u0161anje UVA-za\u0161\u010dite in vivo<\/h2>\n<p>UVA-za\u0161\u010dito je mogo\u010de oceniti tudi z metodo in vivo, opisano v standardu ISO 24442.<\/p>\n<p>Ta metoda dolo\u010da stopnjo za\u0161\u010dite pred UVA-\u017earki pri ljudeh z oceno trajnega potemnjenja pigmenta, ki ga povzro\u010da nadzorovana izpostavljenost UVA-\u017earkom.<\/p>\n<p>Son\u010dno kremo se nanese na dolo\u010dena obmo\u010dja ko\u017ee. Ta obmo\u010dja se nato izpostavijo skrbno nadzorovanemu UVA-sevanju, odziv ko\u017ee pa se oceni v skladu s standardiziranim postopkom.<\/p>\n<p>Na podlagi teh rezultatov se izra\u010duna faktor za\u0161\u010dite pred UVA-\u017earki pri testiranem izdelku.<\/p>\n<p>Testiranje UVA-sevanja in vivo zahteva skrbno nadzorovane raziskovalne pogoje, ustrezen izbor udele\u017eencev in usposobljeno osebje. Zaradi tega ga smejo izvajati le laboratoriji z ustreznimi izku\u0161njami in eti\u010dnim nadzorom.<\/p>\n<h2>Kaj je kriti\u010dna valovna dol\u017eina?<\/h2>\n<p>Kriti\u010dna valovna dol\u017eina je merilo, ki se uporablja za oceno, v kak\u0161nem obsegu son\u010dna krema absorbira ultravijoli\u010dno sevanje.<\/p>\n<p>Izra\u010duna se na podlagi spektra absorpcije UV-sevanja son\u010dnega krema. Vi\u0161ja kriti\u010dna valovna dol\u017eina na splo\u0161no pomeni, da se za\u0161\u010dita razteza dlje v obmo\u010dje UVA-sevanja.<\/p>\n<p>V skladu s Priporo\u010dilom Evropske komisije o son\u010dnih kremah mora biti kriti\u010dna valovna dol\u017eina najmanj 370 nm.<\/p>\n<p>Ta zahteva pomaga dokazati, da son\u010dna krema zagotavlja za\u0161\u010dito \u0161irokega spektra in ne le mo\u010dne za\u0161\u010dite znotraj ozke pasovne \u0161irine UV-spektra.<\/p>\n<p>Kriti\u010dne valovne dol\u017eine ne smemo zamenjati z UVA-PF. Ti dve merili prina\u0161ata razli\u010dne informacije in se pri ocenjevanju u\u010dinkovitosti son\u010dnega za\u0161\u010ditnega sredstva proti UVA-\u017earkom uporabljata skupaj.<\/p>\n<h2>Logotip kroga UVA<\/h2>\n<p> \u0160tevilni izdelki za za\u0161\u010dito pred soncem, ki se prodajajo v Evropi, imajo v krogu ozna\u010dene \u010drke &#8220;UVA&#8221;.<\/p>\n<p>Ta simbol se pogosto uporablja za ozna\u010devanje, da izdelek zagotavlja za\u0161\u010dito pred UVA-\u017earki v skladu s priporo\u010denim razmerjem med za\u0161\u010dito pred UVA-\u017earki in faktorjem SPF, ki ga je dolo\u010dila Evropska komisija.<\/p>\n<p>Simbol se sme uporabljati le, \u010de je za\u0161\u010dita izdelka pred UVA-\u017earki ustrezno potrjena s preskusi.<\/p>\n<p>Proizvajalci morajo zato pred uporabo navedb o za\u0161\u010diti pred UVA-\u017earki na embala\u017ei zagotoviti, da izmerjeni za\u0161\u010ditni faktor proti UVA-\u017earkom dosega priporo\u010deno najmanj\u0161o vrednost, ki zna\u0161a eno tretjino vrednosti SPF, navedene na etiketi, ter da so izpolnjena ustrezna merila za \u0161irokospektralno za\u0161\u010dito.<\/p>\n<h2>Dokumentiranje rezultatov preskusov UVA<\/h2>\n<p>Poro\u010dila o preskusih UVA je treba hraniti kot del tehni\u010dne dokumentacije, ki spremlja kozmeti\u010dni izdelek.<\/p>\n<p><a href=\"https:\/\/www.certifiedcosmetics.com\/blog\/pif-documentation\/what-is-cosmetic-product-information-file-pif\/\"> Datoteka s podatki o izdelku<\/a>(PIF) mora vsebovati dokaze o u\u010dinkih, ki se pripisujejo kozmeti\u010dnemu izdelku, kadar to upravi\u010duje narava ali u\u010dinek izdelka.<\/p>\n<p>Pri son\u010dnem kremu, ki navaja za\u0161\u010dito pred UVA-\u017earki, laboratorijska poro\u010dila in dodatna dokumentacija o u\u010dinkovitosti pomagajo dokazati, da so trditve, predstavljene potro\u0161nikom, ustrezno utemeljene.<\/p>\n<p>V dokumentaciji je treba jasno opredeliti presku\u0161eni izdelek in uporabljeno metodo, da se rezultate lahko pove\u017ee z formulacijo, ki je dana na trg.<\/p>\n<h2>Kaj se zgodi, \u010de izdelek ne prestane UVA testiranja?<\/h2>\n<p> Krema za son\u010denje lahko dose\u017ee \u017eeleni SPF, vendar \u0161e vedno ne zagotavlja zadostne za\u0161\u010dite pred UVA-\u017earki.<\/p>\n<p>Na primer, izmerjena vrednost UVA-PF je lahko ni\u017eja od ene tretjine vrednosti SPF ali pa izdelek morda ne dose\u017ee pri\u010dakovane kriti\u010dne valovne dol\u017eine.<\/p>\n<p>V takih primerih bodo proizvajalci morda morali ponovno preu\u010diti sistem UV-filtrov, izbolj\u0161ati fotostabilnost, prilagoditi sestavo izdelka ali ponovno oceniti navedeno stopnjo za\u0161\u010dite.<\/p>\n<p>Po obse\u017eni spremembi sestave je treba izdelek ponovno preskusiti, da se preveri njegova u\u010dinkovitost.<\/p>\n<h2>Pomen za\u0161\u010dite pred UVA \u017earki v izdelkih za za\u0161\u010dito pred soncem<\/h2>\n<p> Testiranje UVA je temeljni del ocenjevanja u\u010dinkovitosti krem \u200b\u200bza son\u010denje na evropskem trgu. Medtem ko SPF meri predvsem za\u0161\u010dito pred UVB sevanjem, testiranje UVA ka\u017ee, ali izdelek zagotavlja ustrezno za\u0161\u010dito tudi pri dalj\u0161ih ultravijoli\u010dnih valovnih dol\u017einah.<\/p>\n<p>Priporo\u010dilo Evropske komisije 2006\/647\/ES priporo\u010da za\u0161\u010ditni faktor proti UVA-sevanju, ki zna\u0161a vsaj eno tretjino navedenega SPF, ter kriti\u010dno valovno dol\u017eino vsaj 370 nm. Mednarodni standardi, kot je ISO 24443, dolo\u010dajo standardizirane metode za ocenjevanje fotoprotektivnosti proti UVA-sevanju in vitro.<\/p>\n<p>Za proizvajalce kozmeti\u010dnih izdelkov testiranje UVA-sevanja ni zgolj laboratorijska formalnost. Zagotavlja znanstvene dokaze, potrebne za utemeljitev utemeljenih trditev o za\u0161\u010diti pred soncem, za vodenje natan\u010dne dokumentacije o izdelkih ter za zagotavljanje uravnote\u017eene za\u0161\u010dite potro\u0161nikov pred UVA- in UVB-sevanjem.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Za\u0161\u010dita pred soncem se pogosto povezuje s faktorjem SPF, vendar ta v prvi vrsti opisuje za\u0161\u010dito pred ultravijoli\u010dnim B (UVB) sevanjem. Son\u010dna krema, ki zagotavlja mo\u010dno za\u0161\u010dito pred UVB-sevanjem, \u0161e ne pomeni nujno, da zagotavlja tudi ustrezno za\u0161\u010dito pred ultravijoli\u010dnim A (UVA) sevanjem. Zato evropska priporo\u010dila glede son\u010dnih krem se osredoto\u010dajo predvsem na uravnote\u017eeno za\u0161\u010dito&#8230;<\/p>\n","protected":false},"author":294,"featured_media":36969,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4162],"tags":[],"class_list":["post-36967","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-laboratorijsko-testiranje"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.4 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Razlaga standardov za testiranje UVA-sevanja - Certified Cosmetics<\/title>\n<meta name=\"description\" content=\"Spoznajte, kako potekajo preskusi UVA za kozmeti\u010dne izdelke v EU, vklju\u010dno z UVA-PF, standardom ISO 24443, kriti\u010dno valovno dol\u017eino, preskusnimi metodami in trditvami o za\u0161\u010diti pred soncem.\" \/>\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.certifiedcosmetics.com\/sl\/blog\/laboratorijsko-testiranje\/razlaga-standardov-za-testiranje-uva-sevanja\/\" \/>\n<meta property=\"og:locale\" content=\"sl_SI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Razlaga standardov za testiranje UVA-sevanja\" \/>\n<meta property=\"og:description\" content=\"Spoznajte, kako potekajo preskusi UVA za kozmeti\u010dne izdelke v EU, vklju\u010dno z UVA-PF, standardom ISO 24443, kriti\u010dno valovno dol\u017eino, preskusnimi metodami in trditvami o za\u0161\u010diti pred soncem.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.certifiedcosmetics.com\/sl\/blog\/laboratorijsko-testiranje\/razlaga-standardov-za-testiranje-uva-sevanja\/\" \/>\n<meta property=\"og:site_name\" content=\"Certified Cosmetics\" \/>\n<meta property=\"article:published_time\" content=\"2026-11-04T19:08:45+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/uva-protection.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Angela\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Angela\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minut\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/sl\\\/blog\\\/laboratorijsko-testiranje\\\/razlaga-standardov-za-testiranje-uva-sevanja\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/sl\\\/blog\\\/laboratorijsko-testiranje\\\/razlaga-standardov-za-testiranje-uva-sevanja\\\/\"},\"author\":{\"name\":\"Angela\",\"@id\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/sl\\\/#\\\/schema\\\/person\\\/2620f9d56cb0c867784edb68de06746c\"},\"headline\":\"Razlaga standardov za testiranje UVA-sevanja\",\"datePublished\":\"2026-11-04T19:08:45+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/sl\\\/blog\\\/laboratorijsko-testiranje\\\/razlaga-standardov-za-testiranje-uva-sevanja\\\/\"},\"wordCount\":1442,\"publisher\":{\"@id\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/sl\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/sl\\\/blog\\\/laboratorijsko-testiranje\\\/razlaga-standardov-za-testiranje-uva-sevanja\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/uva-protection.jpg\",\"articleSection\":[\"Laboratorijsko testiranje\"],\"inLanguage\":\"sl-SI\",\"copyrightYear\":\"2026\",\"copyrightHolder\":{\"@id\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/sl\\\/blog\\\/laboratorijsko-testiranje\\\/razlaga-standardov-za-testiranje-uva-sevanja\\\/\",\"url\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/sl\\\/blog\\\/laboratorijsko-testiranje\\\/razlaga-standardov-za-testiranje-uva-sevanja\\\/\",\"name\":\"Razlaga standardov za testiranje UVA-sevanja - 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