{"id":31531,"date":"2025-10-11T21:37:28","date_gmt":"2025-10-11T20:37:28","guid":{"rendered":"https:\/\/www.certifiedcosmetics.com\/product\/nezaraden\u00e9\/test-transepidermalnej-straty-vody-tewl\/"},"modified":"2025-10-11T21:37:28","modified_gmt":"2025-10-11T20:37:28","slug":"test-transepidermalnej-straty-vody-tewl","status":"publish","type":"product","link":"https:\/\/www.certifiedcosmetics.com\/sk\/product\/testovanie-ucinnosti\/kozne-testy\/test-transepidermalnej-straty-vody-tewl\/","title":{"rendered":"Test transepiderm\u00e1lnej straty vody (TEWL)"},"content":{"rendered":"<p>Test TEWL (transepiderm\u00e1lna strata vody) je laborat\u00f3rna met\u00f3da pou\u017e\u00edvan\u00e1 na hodnotenie integrity a funk\u010dnosti ko\u017enej bari\u00e9ry. Meria r\u00fdchlos\u0165, akou voda prirodzene vyparuje z povrchu ko\u017ee, \u010d\u00edm poskytuje presn\u00fd \u00fadaj o zdravotnom stave ko\u017enej bari\u00e9ry a \u00fa\u010dinnosti hydrat\u00e1cie. Tento test je nevyhnutn\u00fd na pos\u00fadenie \u00fa\u010dinkov kozmetick\u00fdch v\u00fdrobkov, ako s\u00fa kr\u00e9my, s\u00e9ra, \u010distiace pr\u00edpravky a pr\u00edpravky na obnovu ko\u017enej bari\u00e9ry.  <\/p>\n<h2>\u00da\u010del testu TEWL<\/h2>\n<p>Test TEWL pom\u00e1ha ur\u010di\u0165, \u010di kozmetick\u00fd v\u00fdrobok posil\u0148uje, udr\u017eiava alebo nar\u00fa\u0161a ochrann\u00fa bari\u00e9ru poko\u017eky. Poskytuje cenn\u00e9 inform\u00e1cie o \u00fa\u010dinnosti v\u00fdrobku, najm\u00e4 v pr\u00edpade pr\u00edpravkov, ktor\u00e9 maj\u00fa pod\u013ea v\u00fdrobcu zmier\u0148ova\u0165 suchos\u0165, zlep\u0161ova\u0165 hydrat\u00e1ciu alebo chr\u00e1ni\u0165 pred \u0161kodliv\u00fdmi vplyvmi \u017eivotn\u00e9ho prostredia. <\/p>\n<h2>Ako test funguje<\/h2>\n<p>Meranie TEWL sa vykon\u00e1va pomocou <strong>pr\u00edstrojov\u00e9ho testu<\/strong>, zvy\u010dajne so \u0161pecializovan\u00fdm zariaden\u00edm, ako je odparova\u010d s otvorenou alebo uzavretou komorou. Toto zariadenie meria tok vodnej pary z povrchu ko\u017ee za kontrolovan\u00fdch teplotn\u00fdch a vlhkostn\u00fdch podmienok. V\u00fdsledky sa uv\u00e1dzaj\u00fa v gramoch vody na meter \u0161tvorcov\u00fd za hodinu (g\/m\u00b2h), \u010do predstavuje r\u00fdchlos\u0165 straty vody cez epidermis.  <\/p>\n<h2>Vyu\u017eitie pri testovan\u00ed kozmetick\u00fdch v\u00fdrobkov<\/h2>\n<ul>\n<li>Hodnotenie zvlh\u010duj\u00facich alebo hydrata\u010dn\u00fdch pr\u00edpravkov<\/li>\n<li>Hodnotenie kr\u00e9mov na regener\u00e1ciu ko\u017enej bari\u00e9ry alebo ochrann\u00fdch kr\u00e9mov<\/li>\n<li>Overovanie tvrden\u00ed t\u00fdkaj\u00facich sa \u201eudr\u017eania vlhkosti\u201c alebo \u201ezlep\u0161enia bari\u00e9rovej funkcie\u201c<\/li>\n<li>Testovanie v\u00fdrobkov pre citliv\u00fa alebo po\u0161koden\u00fa poko\u017eku<\/li>\n<li>Porovn\u00e1vacie \u0161t\u00fadie pred a po aplik\u00e1cii v\u00fdrobku<\/li>\n<\/ul>\n<h2>Postup testovania<\/h2>\n<ol>\n<li>Dobrovo\u013en\u00edci sa aklimatizuj\u00fa v kontrolovanom prostred\u00ed (teplota a vlhkos\u0165).<\/li>\n<li>V\u00fdchodiskov\u00e9 hodnoty TEWL sa zaznamen\u00e1vaj\u00fa na neo\u0161etrenom ko\u017enom povrchu.<\/li>\n<li>Testovan\u00fd v\u00fdrobok sa aplikuje v s\u00falade s podmienkami ur\u010den\u00e9ho pou\u017eitia.<\/li>\n<li>Hodnoty TEWL sa op\u00e4\u0165 meraj\u00fa v stanoven\u00fdch intervaloch (napr. po 30 min\u00fatach, 2 hodin\u00e1ch, 24 hodin\u00e1ch).<\/li>\n<li>\u00dadaje sa analyzuj\u00fa s cie\u013eom ur\u010di\u0165 vplyv v\u00fdrobku na ko\u017en\u00fa bari\u00e9ru.<\/li>\n<\/ol>\n<h2>V\u00fdsledky a pod\u00e1vanie spr\u00e1v<\/h2>\n<p>Z\u00e1vere\u010dn\u00e1 spr\u00e1va obsahuje:<\/p>\n<ul>\n<li>Podrobn\u00fd popis testovac\u00edch podmienok a pou\u017eit\u00e9ho pr\u00edstroja<\/li>\n<li>Priemern\u00e9 hodnoty TEWL pred a po aplik\u00e1cii produktu<\/li>\n<li>\u0160tatistick\u00e1 anal\u00fdza zisten\u00fdch rozdielov<\/li>\n<li>Vyhodnotenie funkcie bari\u00e9ry<\/li>\n<li>Grafick\u00e9 zn\u00e1zornenie v\u00fdsledkov (volite\u013en\u00e9)<\/li>\n<\/ul>\n<h2>Pre\u010do je testovanie TEWL d\u00f4le\u017eit\u00e9<\/h2>\n<p>Ko\u017en\u00e1 bari\u00e9ra zohr\u00e1va k\u013e\u00fa\u010dov\u00fa \u00falohu pri udr\u017eiavan\u00ed rovnov\u00e1hy vlhkosti a ochrane pred dr\u00e1\u017ediv\u00fdmi l\u00e1tkami. Naru\u0161en\u00e1 bari\u00e9ra vedie k vysu\u0161eniu, za\u010dervenaniu a citlivosti. Merania TEWL poskytuj\u00fa objekt\u00edvne \u00fadaje, ktor\u00e9 potvrdzuj\u00fa, \u010di v\u00e1\u0161 v\u00fdrobok \u00fa\u010dinne podporuje obnovu bari\u00e9ry a hydrat\u00e1ciu \u2013 k\u013e\u00fa\u010dov\u00e9 faktory pre valid\u00e1ciu v\u00fdrobku a marketingov\u00e9 tvrdenia.  <\/p>\n<h2>Po\u017eiadavky na vzorky<\/h2>\n<ul>\n<li>Minim\u00e1lne mno\u017estvo: 11 hotov\u00fdch v\u00fdrobkov<\/li>\n<li>Typ v\u00fdrobku: ak\u00e1ko\u013evek lok\u00e1lna forma (kr\u00e9m, ple\u0165ov\u00e1 voda, s\u00e9rum, \u010distiaci prostriedok, mas\u0165)<\/li>\n<li>Podmienky skladovania: izbov\u00e1 teplota, pokia\u013e nie je uveden\u00e9 inak<\/li>\n<\/ul>\n<h2>Typick\u00e1 doba spracovania<\/h2>\n<p>Laborat\u00f3rne testovanie trv\u00e1 4 t\u00fd\u017edne od d\u00e1tumu prijatia vzorky a schv\u00e1lenia protokolu. Okrem toho pros\u00edm po\u010d\u00edtajte s pribli\u017ene 5\u20137 pracovn\u00fdmi d\u0148ami na z\u00edskanie v\u00fdsledkov, ich anal\u00fdzu a vyhotovenie spr\u00e1vy. <\/p>\n<h2>V\u00fdstupy<\/h2>\n<ul>\n<li>\u00dapln\u00e1 laborat\u00f3rna spr\u00e1va vo form\u00e1te PDF<\/li>\n<li>S\u00fahrn v\u00fdsledkov vhodn\u00fd pre regula\u010dn\u00fa alebo marketingov\u00fa dokument\u00e1ciu<\/li>\n<li>Volite\u013en\u00e9 zahrnutie \u00fadajov do spr\u00e1v o podlo\u017een\u00ed n\u00e1rokov<\/li>\n<\/ul>\n<h2>Dodr\u017eiavanie predpisov a normy<\/h2>\n<p>Test sa riadi usmerneniami, ktor\u00e9 s\u00fa v s\u00falade s <strong>medzin\u00e1rodn\u00fdmi normami pre testovanie kozmetick\u00fdch v\u00fdrobkov<\/strong> a postupmi laborat\u00f3rnej kvality <strong>pod\u013ea normy ISO 15197<\/strong>. V\u0161etky \u0161t\u00fadie sa vykon\u00e1vaj\u00fa za kontrolovan\u00fdch environment\u00e1lnych podmienok s cie\u013eom zabezpe\u010di\u0165 presnos\u0165 a reprodukovate\u013enos\u0165. <\/p>\n<h2>S\u00favisiace testy<\/h2>\n<ul>\n<li>Korneometria (test hydrat\u00e1cie poko\u017eky)<\/li>\n<li>Sebumeter (meranie obsahu ko\u017en\u00fdch lipidov)<\/li>\n<li>Meranie pH povrchu ko\u017ee<\/li>\n<li>Klinick\u00e9 hodnotenie pr\u00edpravkov na regener\u00e1ciu ko\u017enej bari\u00e9ry<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Test TEWL (transepiderm\u00e1lna strata vody) je laborat\u00f3rna met\u00f3da pou\u017e\u00edvan\u00e1 na hodnotenie integrity a funk\u010dnosti ko\u017enej bari\u00e9ry. Meria r\u00fdchlos\u0165, akou voda prirodzene vyparuje z povrchu ko\u017ee, \u010d\u00edm poskytuje presn\u00fd \u00fadaj o zdravotnom stave ko\u017enej bari\u00e9ry a \u00fa\u010dinnosti hydrat\u00e1cie. Tento test je nevyhnutn\u00fd na pos\u00fadenie \u00fa\u010dinkov kozmetick\u00fdch v\u00fdrobkov, ako s\u00fa kr\u00e9my, s\u00e9ra, \u010distiace pr\u00edpravky a pr\u00edpravky na&#8230;<\/p>\n","protected":false},"featured_media":31533,"template":"","meta":[],"product_brand":[],"product_cat":[2957,2956],"product_tag":[],"class_list":["post-31531","product","type-product","status-publish","has-post-thumbnail","product_cat-kozne-testy","product_cat-testovanie-ucinnosti","first","instock","virtual","taxable","purchasable","product-type-simple"],"bundled_by":[],"bundle_stock_status":"instock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[],"exclude_global_add_ons":[],"addons":[],"yoast_head":"<!-- This site is optimized with the 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