{"id":36973,"date":"2026-11-04T20:08:47","date_gmt":"2026-11-04T19:08:47","guid":{"rendered":"https:\/\/www.certifiedcosmetics.com\/blog\/uncategorized-cs\/stanoveni-doby-trvanlivosti-kosmetickych-pripravku\/"},"modified":"2026-11-04T20:08:47","modified_gmt":"2026-11-04T19:08:47","slug":"stanoveni-doby-trvanlivosti-kosmetickych-pripravku","status":"publish","type":"post","link":"https:\/\/www.certifiedcosmetics.com\/cs\/blog\/laboratorni-testy\/stanoveni-doby-trvanlivosti-kosmetickych-pripravku\/","title":{"rendered":"Stanoven\u00ed doby trvanlivosti kosmetick\u00fdch p\u0159\u00edpravk\u016f"},"content":{"rendered":"<p><img decoding=\"async\" class=\"wp-image-19557 alignright\" src=\"https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/shelf-life-640x640.jpg\" alt=\"\" width=\"324\" height=\"324\" srcset=\"https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/shelf-life-640x640.jpg 640w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/shelf-life-160x160.jpg 160w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/shelf-life-768x768.jpg 768w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/shelf-life-320x320.jpg 320w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/shelf-life-400x400.jpg 400w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/shelf-life-300x300.jpg 300w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/shelf-life-600x600.jpg 600w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/shelf-life-100x100.jpg 100w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/shelf-life-60x60.jpg 60w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/shelf-life-110x110.jpg 110w, https:\/\/www.certifiedcosmetics.com\/wp-content\/uploads\/2026\/07\/shelf-life.jpg 800w\" sizes=\"(max-width: 324px) 100vw, 324px\" \/>Ka\u017ed\u00fd kosmetick\u00fd p\u0159\u00edpravek se v pr\u016fb\u011bhu \u010dasu m\u011bn\u00ed. Slo\u017eky se mohou postupn\u011b rozkl\u00e1dat, v\u016fn\u011b mohou ztratit sv\u016fj p\u016fvodn\u00ed charakter, barvy mohou vyblednout a konzerva\u010dn\u00ed l\u00e1tky mohou ztratit na \u00fa\u010dinnosti. Stanoven\u00ed doby trvanlivosti p\u0159\u00edpravku je proto nezbytnou sou\u010d\u00e1st\u00ed v\u00fdvoje kosmetick\u00fdch p\u0159\u00edpravk\u016f a pom\u00e1h\u00e1 v\u00fdrobc\u016fm zajistit, aby p\u0159\u00edpravky z\u016fstaly bezpe\u010dn\u00e9, stabiln\u00ed a fungovaly tak, jak maj\u00ed, po celou dobu sv\u00e9 zam\u00fd\u0161len\u00e9 \u017eivotnosti.<\/p>\n<p>V Evropsk\u00e9 unii se doba trvanlivosti nestanovuje libovoln\u011b. M\u011bla by b\u00fdt podlo\u017eena v\u011bdeck\u00fdmi d\u016fkazy z\u00edskan\u00fdmi b\u011bhem v\u00fdvoje v\u00fdrobku, zejm\u00e9na prost\u0159ednictv\u00edm studi\u00ed stability a p\u0159\u00edpadn\u011b mikrobiologick\u00fdch test\u016f. Tato hodnocen\u00ed jsou sou\u010d\u00e1st\u00ed <a href=\"https:\/\/www.certifiedcosmetics.com\/cs\/product\/posouzeni-bezpecnosti-kosmetickych-pripravku\/posuzovani-bezpecnosti-kosmetickych-pripravku-na-olejove-bazi-a-bezvode\/\">posouzen\u00ed bezpe\u010dnosti<\/a>, kter\u00e9 se prov\u00e1d\u00ed p\u0159ed uveden\u00edm kosmetick\u00e9ho p\u0159\u00edpravku na trh podle na\u0159\u00edzen\u00ed (ES) \u010d. 1223\/2009.<\/p>\n<h2>Co je to doba trvanlivosti?<\/h2>\n<p>Doba trvanlivosti ozna\u010duje obdob\u00ed, po kter\u00e9 kosmetick\u00fd p\u0159\u00edpravek z\u016fst\u00e1v\u00e1 bezpe\u010dn\u00fd a zachov\u00e1v\u00e1 si o\u010dek\u00e1vanou kvalitu, je-li skladov\u00e1n za vhodn\u00fdch podm\u00ednek p\u0159edt\u00edm, ne\u017e jej spot\u0159ebitel otev\u0159e.<\/p>\n<p>B\u011bhem tohoto obdob\u00ed by m\u011bl v\u00fdrobek i nad\u00e1le spl\u0148ovat specifikace t\u00fdkaj\u00edc\u00ed se vzhledu, z\u00e1pachu, konzistence, hodnoty pH, viskozity, stability slo\u017eek, mikrobiologick\u00e9 kvality a kompatibility s obalem. Dojde-li k v\u00fdrazn\u00e9mu zhor\u0161en\u00ed n\u011bkter\u00e9 z t\u011bchto vlastnost\u00ed, v\u00fdrobek ji\u017e nemus\u00ed b\u00fdt vhodn\u00fd k pou\u017eit\u00ed.<\/p>\n<p><strong>Je d\u016fle\u017eit\u00e9 rozli\u0161ovat mezi dobou trvanlivosti a dobou pou\u017eitelnosti po otev\u0159en\u00ed (PAO)<\/strong>. Doba trvanlivosti se vztahuje na neotev\u0159en\u00fd v\u00fdrobek skladovan\u00fd spr\u00e1vn\u00fdm zp\u016fsobem, zat\u00edmco PAO ud\u00e1v\u00e1, jak dlouho lze v\u00fdrobek obecn\u011b bezpe\u010dn\u011b pou\u017e\u00edvat po jeho prvn\u00edm otev\u0159en\u00ed.<\/p>\n<h2>Pro\u010d je doba trvanlivosti d\u016fle\u017eit\u00e1<\/h2>\n<p>Realistick\u00e1 doba trvanlivosti pom\u00e1h\u00e1 chr\u00e1nit jak spot\u0159ebitele, tak v\u00fdrobce. V\u00fdrobky, kter\u00e9 z\u016fst\u00e1vaj\u00ed na reg\u00e1lech obchod\u016f po cel\u00e9 m\u011bs\u00edce \u010di roky, mus\u00ed i nad\u00e1le spl\u0148ovat o\u010dek\u00e1v\u00e1n\u00ed, kter\u00e1 do nich byla vlo\u017eena v okam\u017eiku n\u00e1kupu a pou\u017eit\u00ed.<\/p>\n<p>Nespr\u00e1vn\u011b uveden\u00e1 doba trvanlivosti m\u016f\u017ee v\u00e9st k \u0159ad\u011b probl\u00e9m\u016f, mezi n\u011b\u017e pat\u0159\u00ed sn\u00ed\u017een\u00e1 funk\u010dnost v\u00fdrobku, zm\u011bny vzhledu, v\u016fn\u011b nebo konzistence, ztr\u00e1ta \u00fa\u010dinnosti konzerva\u010dn\u00edch l\u00e1tek, mikrobiologick\u00e1 kontaminace, st\u00ed\u017enosti spot\u0159ebitel\u016f a vr\u00e1cen\u00ed v\u00fdrobk\u016f, jako\u017e i zv\u00fd\u0161en\u00e1 regula\u010dn\u00ed a obchodn\u00ed rizika.<\/p>\n<p>Z t\u011bchto d\u016fvod\u016f je stanoven\u00ed doby trvanlivosti d\u016fle\u017eitou sou\u010d\u00e1st\u00ed procesu v\u00fdvoje produktu, a nikoli pouhou formalitou souvisej\u00edc\u00ed s ozna\u010dov\u00e1n\u00edm v\u00fdrobk\u016f.<\/p>\n<h2>Je podle kosmetick\u00e9ho na\u0159\u00edzen\u00ed EU vy\u017eadov\u00e1na doba pou\u017eitelnosti?<\/h2>\n<p>Na\u0159\u00edzen\u00ed (ES) \u010d. 1223\/2009 vy\u017eaduje, aby kosmetick\u00e9 p\u0159\u00edpravky uv\u00e1d\u011bn\u00e9 na trh EU byly bezpe\u010dn\u00e9 za v\u0161ech b\u011b\u017en\u00fdch a p\u0159im\u011b\u0159en\u011b p\u0159edv\u00eddateln\u00fdch podm\u00ednek pou\u017eit\u00ed. A\u010dkoli na\u0159\u00edzen\u00ed nestanov\u00ed \u017e\u00e1dnou konkr\u00e9tn\u00ed zku\u0161ebn\u00ed metodu ani pevn\u011b stanovenou dobu trvanlivosti, mus\u00ed v\u00fdrobci disponovat odpov\u00eddaj\u00edc\u00edmi d\u016fkazy o stabilit\u011b a bezpe\u010dnosti v\u00fdrobku.<\/p>\n<p>Zpr\u00e1va o bezpe\u010dnosti kosmetick\u00e9ho p\u0159\u00edpravku (CPSR) p\u0159i posuzov\u00e1n\u00ed toho, zda je p\u0159\u00edpravek b\u011bhem skladov\u00e1n\u00ed a pou\u017e\u00edv\u00e1n\u00ed nad\u00e1le bezpe\u010dn\u00fd, zohled\u0148uje tak\u00e9 dostupn\u00e9 informace o stabilit\u011b.<\/p>\n<p>Pokud m\u00e1 kosmetick\u00fd p\u0159\u00edpravek minim\u00e1ln\u00ed trvanlivost krat\u0161\u00ed ne\u017e 30 m\u011bs\u00edc\u016f, mus\u00ed b\u00fdt na etiket\u011b uvedeno datum \u201espot\u0159ebujte do\u201c.<\/p>\n<p>Pokud je v\u00fdrobek stabiln\u00ed po dobu del\u0161\u00ed ne\u017e 30 m\u011bs\u00edc\u016f, je datum minim\u00e1ln\u00ed trvanlivosti obvykle nahrazeno symbolem \u201eDoba pou\u017eitelnosti po otev\u0159en\u00ed\u201c (PAO), kter\u00fd ud\u00e1v\u00e1, jak dlouho lze v\u00fdrobek obvykle pou\u017e\u00edvat po prvn\u00edm otev\u0159en\u00ed.<\/p>\n<h2>Jak se stanovuje doba trvanlivosti?<\/h2>\n<p>Doba trvanlivosti se stanovuje na z\u00e1klad\u011b kombinace v\u011bdeck\u00fdch test\u016f a technick\u00e9ho posouzen\u00ed, nikoli pouze na z\u00e1klad\u011b jedin\u00e9ho laboratorn\u00edho m\u011b\u0159en\u00ed.<\/p>\n<p>V\u00fdrobci obvykle hodnot\u00ed v\u00fdrobek prost\u0159ednictv\u00edm<a href=\"https:\/\/www.certifiedcosmetics.com\/cs\/product\/laborator\/test-stability-a-kompatibility\/\"> studi\u00ed stability<\/a> prov\u00e1d\u011bn\u00fdch za r\u016fzn\u00fdch skladovac\u00edch podm\u00ednek. Tyto studie sleduj\u00ed fyzik\u00e1ln\u00ed, chemick\u00e9 a mikrobiologick\u00e9 vlastnosti v pr\u016fb\u011bhu \u010dasu.<\/p>\n<p>Na z\u00e1klad\u011b shrom\u00e1\u017ed\u011bn\u00fdch \u00fadaj\u016f mohou odborn\u00edci odhadnout, jak se bude v\u00fdrobek chovat b\u011bhem p\u0159epravy, skladov\u00e1n\u00ed, distribuce v maloobchodn\u00ed s\u00edti a p\u0159i pou\u017e\u00edv\u00e1n\u00ed spot\u0159ebiteli.<\/p>\n<p>Zohled\u0148uje se n\u011bkolik faktor\u016f, mezi n\u011b\u017e pat\u0159\u00ed:<\/p>\n<ul>\n<li>Fyzik\u00e1ln\u00ed stabilita.<\/li>\n<li>Chemick\u00e1 stabilita.<\/li>\n<li>Mikrobiologick\u00e1 kvalita.<\/li>\n<li>Kompatibilita obalu.<\/li>\n<li>P\u0159edpokl\u00e1dan\u00e9 skladovac\u00ed podm\u00ednky.<\/li>\n<li>Slo\u017een\u00ed p\u0159\u00edpravku.<\/li>\n<\/ul>\n<p>V\u0161echna tato hodnocen\u00ed dohromady poskytuj\u00ed d\u016fkazy pot\u0159ebn\u00e9 k od\u016fvodn\u011bn\u00ed vhodn\u00e9 doby pou\u017eitelnosti.<\/p>\n<p>Zkou\u0161ky stability tvo\u0159\u00ed z\u00e1klad pro stanoven\u00ed doby trvanlivosti.<\/p>\n<p>Zrychlen\u00e9 testov\u00e1n\u00ed vyu\u017e\u00edv\u00e1 zv\u00fd\u0161en\u00e9 teploty k rychlej\u0161\u00edmu odhadu dlouhodob\u00e9 stability, zat\u00edmco studie v re\u00e1ln\u00e9m \u010dase sleduj\u00ed v\u00fdrobky za b\u011b\u017en\u00fdch skladovac\u00edch podm\u00ednek po del\u0161\u00ed dobu.<\/p>\n<p>Kombinace obou p\u0159\u00edstup\u016f zvy\u0161uje spolehlivost stanoven\u00e9 doby trvanlivosti.<\/p>\n<h2>Balen\u00ed hraje d\u016fle\u017eitou roli<\/h2>\n<p>Trvanlivost z\u00e1vis\u00ed nejen na samotn\u00e9m slo\u017een\u00ed, ale tak\u00e9 na zvolen\u00e9m balen\u00ed.<\/p>\n<p>N\u00e1doby mus\u00ed v\u00fdrobek dostate\u010dn\u011b chr\u00e1nit p\u0159ed vlivy vn\u011bj\u0161\u00edho prost\u0159ed\u00ed, jako je kysl\u00edk, vlhkost, sv\u011btlo a mikrobi\u00e1ln\u00ed kontaminace. N\u011bkter\u00e9 slo\u017eky mohou nav\u00edc v pr\u016fb\u011bhu \u010dasu reagovat s plasty, povrchov\u00fdmi \u00fapravami, \u010derpadly nebo t\u011bsn\u011bn\u00edmi.<\/p>\n<p>Studie kompatibility obal\u016f pom\u00e1haj\u00ed odhalit potenci\u00e1ln\u00ed probl\u00e9my, jako je zm\u011bna barvy, \u00fanik, odpa\u0159ov\u00e1n\u00ed, deformace nebo migrace mezi obalem a kosmetick\u00fdm p\u0159\u00edpravkem.<\/p>\n<p>Z tohoto d\u016fvodu m\u016f\u017ee zm\u011bna obalu vy\u017eadovat dodate\u010dn\u00e9 posouzen\u00ed stability, a to i v p\u0159\u00edpad\u011b, \u017ee slo\u017een\u00ed p\u0159\u00edpravku z\u016fstane nezm\u011bn\u011bno.<\/p>\n<h2>Faktory ovliv\u0148uj\u00edc\u00ed trvanlivost<\/h2>\n<p> Pro kosmetick\u00e9 produkty neexistuje univerz\u00e1ln\u00ed trvanlivost. Ka\u017ed\u00e9 slo\u017een\u00ed se chov\u00e1 odli\u0161n\u011b v z\u00e1vislosti na slo\u017een\u00ed a zam\u00fd\u0161len\u00e9m pou\u017eit\u00ed.<\/p>\n<p>\u017divotnost v\u00fdrobku ovliv\u0148uje \u0159ada faktor\u016f, mezi n\u011b\u017e pat\u0159\u00ed mno\u017estv\u00ed obsa\u017een\u00e9 vody, typ pou\u017eit\u00fdch emulz\u00ed, konzerva\u010dn\u00ed syst\u00e9my, antioxidanty, hodnota pH, vystaven\u00ed kysl\u00edku, kvalita v\u00fdroby, skladovac\u00ed teplota, proveden\u00ed obalu a stabilita \u00fa\u010dinn\u00fdch l\u00e1tek.<\/p>\n<p>V\u00fdrobky obsahuj\u00edc\u00ed nestabiln\u00ed p\u0159\u00edrodn\u00ed v\u00fdta\u017eky, vitam\u00edny nebo rostlinn\u00e9 slo\u017eky mohou vy\u017eadovat d\u016fkladn\u011bj\u0161\u00ed posouzen\u00ed ne\u017e p\u0159\u00edpravky slo\u017een\u00e9 z vysoce stabiln\u00edch slo\u017eek.<\/p>\n<h2>Typick\u00e1 doba trvanlivosti kosmetick\u00fdch p\u0159\u00edpravk\u016f<\/h2>\n<p>Mnoho kosmetick\u00fdch p\u0159\u00edpravk\u016f uv\u00e1d\u011bn\u00fdch na evropsk\u00fd trh m\u00e1 p\u0159i spr\u00e1vn\u00e9m skladov\u00e1n\u00ed dobu trvanlivosti v neotev\u0159en\u00e9m stavu v rozmez\u00ed dvou a\u017e t\u0159\u00ed let. To by v\u0161ak nem\u011blo b\u00fdt vykl\u00e1d\u00e1no jako z\u00e1konn\u00fd po\u017eadavek.<\/p>\n<p>N\u011bkter\u00e9 v\u00fdrobky mohou vykazovat vynikaj\u00edc\u00ed stabilitu i po uplynut\u00ed t\u00e9to lh\u016fty, zat\u00edmco u jin\u00fdch \u2013 zejm\u00e9na u p\u0159\u00edpravk\u016f obsahuj\u00edc\u00edch nestabiln\u00ed \u00fa\u010dinn\u00e9 l\u00e1tky nebo minim\u00e1ln\u00ed mno\u017estv\u00ed konzerva\u010dn\u00edch l\u00e1tek \u2013 m\u016f\u017ee b\u00fdt zapot\u0159eb\u00ed krat\u0161\u00ed doba pou\u017eitelnosti podlo\u017een\u00e1 v\u00fdsledky test\u016f.<\/p>\n<p><strong>Ka\u017ed\u00fd v\u00fdrobek by proto m\u011bl b\u00fdt posuzov\u00e1n individu\u00e1ln\u011b<\/strong>, m\u00edsto aby se vych\u00e1zelo z obecn\u00fdch odhad\u016f platn\u00fdch pro dan\u00e9 odv\u011btv\u00ed.<\/p>\n<h2>Co se stane, pokud se objev\u00ed probl\u00e9my se stabilitou?<\/h2>\n<p>Studie trvanlivosti n\u011bkdy odhal\u00ed neo\u010dek\u00e1van\u00e9 slabiny slo\u017een\u00ed.<\/p>\n<p>Mezi b\u011b\u017en\u00e9 jevy pat\u0159\u00ed separace emulz\u00ed, zm\u011bny viskozity, nestabilita barvy, rozklad vonn\u00fdch l\u00e1tek, v\u00fdkyvy hodnoty pH, r\u016fst mikroorganism\u016f nebo neslu\u010ditelnost s obalem.<\/p>\n<p>V takov\u00fdch p\u0159\u00edpadech v\u00fdrobci \u010dasto uprav\u00ed slo\u017een\u00ed v\u00fdrobku, vylep\u0161\u00ed syst\u00e9m konzerva\u010dn\u00edch l\u00e1tek, zm\u011bn\u00ed obal nebo uprav\u00ed doporu\u010den\u00ed pro skladov\u00e1n\u00ed, a teprve pot\u00e9 provedou nezbytn\u00e9 testy znovu.<\/p>\n<p>Odhalen\u00ed t\u011bchto probl\u00e9m\u016f b\u011bhem v\u00fdvoje je podstatn\u011b levn\u011bj\u0161\u00ed ne\u017e jejich zji\u0161t\u011bn\u00ed a\u017e po uveden\u00ed produktu na trh.<\/p>\n<h2>Doba trvanlivosti a ozna\u010dov\u00e1n\u00ed v\u00fdrobk\u016f<\/h2>\n<p>Stanoven\u00e1 doba trvanlivosti m\u00e1 p\u0159\u00edm\u00fd vliv na informace poskytovan\u00e9 spot\u0159ebitel\u016fm.<\/p>\n<p>V\u00fdrobky s minim\u00e1ln\u00ed trvanlivost\u00ed 30 m\u011bs\u00edc\u016f nebo m\u00e9n\u011b mus\u00ed b\u00fdt opat\u0159eny datem \u201eSpot\u0159ebujte do\u201c.<\/p>\n<p>U v\u00fdrobk\u016f, jejich\u017e doba trvanlivosti p\u0159esahuje 30 m\u011bs\u00edc\u016f, se obvykle m\u00edsto toho uv\u00e1d\u00ed symbol <a href=\"https:\/\/www.certifiedcosmetics.com\/blog\/cosmetic-product-labelling\/what-is-period-after-opening-pao\/\">\u201eDoba pou\u017eitelnosti po otev\u0159en\u00ed\u201c<\/a>, kter\u00fd ozna\u010duje doporu\u010denou dobu bezpe\u010dn\u00e9ho pou\u017eit\u00ed po otev\u0159en\u00ed v\u00fdrobku.<\/p>\n<p>Stanovena doba pou\u017eitelnosti by m\u011bla b\u00fdt v\u017edy podlo\u017eena p\u0159\u00edslu\u0161nou technickou dokumentac\u00ed, kterou vede v\u00fdrobce nebo odpov\u011bdn\u00e1 osoba jako sou\u010d\u00e1st <a href=\"https:\/\/www.certifiedcosmetics.com\/blog\/pif-documentation\/what-is-cosmetic-product-information-file-pif\/\">informa\u010dn\u00edho souboru o v\u00fdrobku (PIF).<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ka\u017ed\u00fd kosmetick\u00fd p\u0159\u00edpravek se v pr\u016fb\u011bhu \u010dasu m\u011bn\u00ed. Slo\u017eky se mohou postupn\u011b rozkl\u00e1dat, v\u016fn\u011b mohou ztratit sv\u016fj p\u016fvodn\u00ed charakter, barvy mohou vyblednout a konzerva\u010dn\u00ed l\u00e1tky mohou ztratit na \u00fa\u010dinnosti. Stanoven\u00ed doby trvanlivosti p\u0159\u00edpravku je proto nezbytnou sou\u010d\u00e1st\u00ed v\u00fdvoje kosmetick\u00fdch p\u0159\u00edpravk\u016f a pom\u00e1h\u00e1 v\u00fdrobc\u016fm zajistit, aby p\u0159\u00edpravky z\u016fstaly bezpe\u010dn\u00e9, stabiln\u00ed a fungovaly tak, jak maj\u00ed, po&#8230;<\/p>\n","protected":false},"author":294,"featured_media":36974,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4154],"tags":[],"class_list":["post-36973","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-laboratorni-testy"],"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>Stanoven\u00ed doby trvanlivosti kosmetick\u00fdch p\u0159\u00edpravk\u016f - Certified Cosmetics<\/title>\n<meta name=\"description\" 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