{"id":36933,"date":"2026-11-04T20:08:45","date_gmt":"2026-11-04T19:08:45","guid":{"rendered":"https:\/\/www.certifiedcosmetics.com\/blog\/uncategorized-lt\/uva-bandymu-standartu-paaiskinimas\/"},"modified":"2026-11-04T20:08:45","modified_gmt":"2026-11-04T19:08:45","slug":"uva-bandymu-standartu-paaiskinimas","status":"publish","type":"post","link":"https:\/\/www.certifiedcosmetics.com\/lt\/blog\/laboratoriniai-tyrimai\/uva-bandymu-standartu-paaiskinimas\/","title":{"rendered":"UVA bandym\u0173 standart\u0173 paai\u0161kinimas"},"content":{"rendered":"

\"\"Apsauga nuo saul\u0117s da\u017enai siejama su SPF, ta\u010diau SPF pirmiausia apib\u016bdina apsaug\u0105 nuo ultravioletini\u0173 B (UVB) spinduli\u0173. Saul\u0117s kremas, u\u017etikrinantis stipri\u0105 apsaug\u0105 nuo UVB spinduli\u0173, neb\u016btinai u\u017etikrina pakankam\u0105 apsaug\u0105 nuo ultravioletini\u0173 A (UVA) spinduli\u0173.<\/p>\n

D\u0117l \u0161ios prie\u017easties Europos saul\u0117s apsaugos priemoni\u0173 gair\u0117se ypatingas d\u0117mesys skiriamas subalansuotai apsaugai nuo UVB ir UVA spinduli\u0173. Tod\u0117l gamintojai, kuriantys saul\u0117s apsaugos priemones ar kosmetikos gaminius, kuri\u0173 etiket\u0117se nurodoma, kad jie apsaugo nuo saul\u0117s, tur\u0117t\u0173 \u012fvertinti apsaug\u0105 nuo UVA spinduli\u0173, taikydami tinkamus ir moksli\u0161kai pripa\u017eintus bandymo metodus.<\/p>\n

Kas yra UVA spinduliai?<\/h2>\n

Saul\u0117s ultravioletiniai spinduliai paprastai skirstomi \u012f UVA ir UVB spindulius.<\/p>\n

UVB spinduliai yra glaud\u017eiai susij\u0119 su nudegimais saul\u0117je ir yra pagrindinis spinduli\u0173 tipas, kurio intensyvumas matuojamas nustatant saul\u0117s apsaugos faktori\u0173 (SPF).<\/p>\n

UVA spinduliai \u012fsiskverbia giliau \u012f od\u0105<\/strong> ir prisideda prie ankstyvo odos sen\u0117jimo<\/strong> bei ilgalaik\u0117s odos \u017ealos<\/strong>. Jie taip pat dalyvauja procesuose, susijusiuose su odos v\u0117\u017eio i\u0161sivystymu.<\/p>\n

Skirtingai nuo UVB spinduli\u0173, UVA spinduli\u0173 poveikis ne visada sukelia i\u0161 karto pastebim\u0105 reakcij\u0105, pavyzd\u017eiui, nudegim\u0105 saul\u0117je. Tod\u0117l vartotojai gali b\u016bti veikiami didel\u0117s UVA spinduli\u0173 doz\u0117s, i\u0161 karto nepasteb\u0117dami j\u0173 poveikio.<\/p>\n

B\u016btent tod\u0117l veiksmingos saul\u0117s apsaugos priemon\u0117s tur\u0117t\u0173 u\u017etikrinti apsaug\u0105 nuo pla\u010dio spektro ultravioletini\u0173 spinduli\u0173.<\/p>\n

Kod\u0117l b\u016btini UVA bandymai?<\/h2>\n

Vien SPF rodiklis negali parodyti, kokio lygio apsaug\u0105 nuo UVA spinduli\u0173 suteikia saul\u0117s kremas.<\/p>\n

Dvi priemon\u0117s su vienodu SPF gali u\u017etikrinti labai skirting\u0105 apsaugos nuo UVA lyg\u012f. Naudot\u0173 UV filtr\u0173 tipas, j\u0173 koncentracija, fotostabilumas, pasiskirstymas priemon\u0117je ir ant odos susidarantis sluoksnis \u2013 visa tai gali tur\u0117ti \u012ftakos apsaugai nuo UVA spinduli\u0173.<\/p>\n

UVA bandymai suteikia i\u0161matuojam\u0173 \u012frodym\u0173 apie galutinio produkto teikiam\u0105 apsaug\u0105.<\/p>\n

Pagal Komisijos reglament\u0105 (ES) Nr. 655\/2013 kosmetikos teiginiai turi b\u016bti pagr\u012fsti tinkamais ir patikrinamais \u012frodymais. Tod\u0117l gamintojai, teigiantys, kad j\u0173 produktai suteikia apsaug\u0105 nuo UVA spinduli\u0173 arba pla\u010dio spektro apsaug\u0105, tur\u0117t\u0173 tur\u0117ti atitinkamus bandym\u0173 duomenis, kuriais \u0161ie teiginiai b\u016bt\u0173 pagr\u012fsti.<\/p>\n

Europos reikalavimai d\u0117l apsaugos nuo UVA spinduli\u0173<\/h2>\n

Europos Komisijos rekomendacijoje 2006\/647\/EB<\/a> nustatytas svarbus principas, u\u017etikrinantis subalansuot\u0105 apsaug\u0105 nuo saul\u0117s.<\/p>\n

UVA apsaugos faktorius tur\u0117t\u0173 b\u016bti ne ma\u017eesnis kaip tre\u010ddalis nurodyto SPF.<\/strong><\/p>\n

Pavyzd\u017eiui, saul\u0117s kremas, kurio etiket\u0117je nurodytas SPF 30, tur\u0117t\u0173 u\u017etikrinti ne ma\u017eesn\u012f kaip 10 UVA apsaugos faktori\u0173. Produktas, kurio etiket\u0117je nurodytas SPF 50, tur\u0117t\u0173 u\u017etikrinti ne ma\u017eesn\u012f kaip ma\u017edaug 16,7 UVA apsaugos faktori\u0173.<\/p>\n

Rekomendacijoje taip pat nurodyta, kad kritinis bangos ilgis<\/strong> tur\u0117t\u0173 b\u016bti ne ma\u017eesnis kaip 370 nanometr\u0173.<\/p>\n

\u0160iais kriterijais siekiama u\u017etikrinti, kad saul\u0117s apsaugos priemon\u0117s suteikt\u0173 pakankamai pla\u010di\u0105 apsaug\u0105<\/strong> visame UVA ir UVB spektre, o ne sutelkt\u0173 apsaug\u0105 daugiausia UVB diapazone.<\/p>\n

ISO 24443: UVA bandymai in vitro<\/h2>\n

Vienas i\u0161 pagrindini\u0173 tarptautini\u0173 standart\u0173, taikom\u0173 UVA apsaugos vertinimui, yra ISO 24443:2021 \u201eKosmetikos priemon\u0117s. Saul\u0117s apsaugos priemoni\u0173 UVA fotoprotekcijos nustatymas in vitro<\/em>\u201c.<\/p>\n

\u0160iame standarte apibr\u0117\u017eta in vitro proced\u016bra, skirta saul\u0117s apsaugos priemoni\u0173 apsaugai nuo UVA spinduli\u0173 charakteristikoms nustatyti. Ji skirta sudaryti UV spektro absorbcijos kreiv\u0119, pagal kuri\u0105 galima apskai\u010diuoti atitinkamus apsaugos nuo UVA spinduli\u0173 parametrus.<\/p>\n

Atliekant bandym\u0105, ant specialiai paruo\u0161t\u0173 bandymo plok\u0161teli\u0173 u\u017etepamas kontroliuojamas kiekis saul\u0117s apsaugos priemon\u0117s. Produktas kruop\u0161\u010diai paskirstomas, kad susidaryt\u0173 tipinis sluoksnis.<\/p>\n

Tada specialia laboratorine \u012franga matuojamas ultravioletini\u0173 spinduli\u0173 pralaidumas per produkto sluoksn\u012f. Be to, m\u0117giniai ap\u0161vitinami nustatyta UV spinduli\u0173 doze, kad b\u016bt\u0173 galima \u012fvertinti produkto b\u016bkl\u0119 po ap\u0161vitinimo.<\/p>\n

Gauti spektriniai duomenys naudojami in vitro UVA apsaugos faktoriui nustatyti ir produkto apsaugai nuo UVA spinduli\u0173 \u012fvertinti.<\/p>\n

Kadangi rezultat\u0105 gali paveikti taikymo technika, plok\u0161tel\u0117s savyb\u0117s, ap\u0161vitos s\u0105lygos ir prietais\u0173 matavimai, proced\u016br\u0105 tur\u0117t\u0173 atlikti patyrusi laboratorija, laikydamasi standartizuotos metodikos<\/a>. Standarte ISO 24443:2021 konkre\u010diai nustatyta in vitro proced\u016bra, skirta apib\u016bdinti apsaug\u0105 nuo UVA spinduli\u0173 ir pakartotinai nustatyti spektrinio sugerties charakteristikas.<\/p>\n

ISO 24442: \u201eIn vivo\u201c UVA bandymai<\/h2>\n

Apsauga nuo UVA spinduli\u0173 taip pat gali b\u016bti vertinama taikant \u201ein vivo\u201c metod\u0105, apra\u0161yt\u0105 standarte ISO 24442.<\/p>\n

\u0160iuo metodu nustatoma UVA apsauga tiriamiesiems \u017emon\u0117ms, vertinant ilgalaik\u012f odos pigmentacijos patams\u0117jim\u0105, kur\u012f sukelia kontroliuojamas UVA spinduli\u0173 poveikis.<\/p>\n

Saul\u0117s kremas tepamas ant nustatyt\u0173 odos plot\u0173. Po to \u0161ie plotai veikiami kruop\u0161\u010diai kontroliuojama UVA spinduliuote, o odos reakcija vertinama pagal standartizuot\u0105 proced\u016br\u0105.<\/p>\n

\u0160ie rezultatai naudojami tiriamojo produkto UVA apsaugos faktoriui apskai\u010diuoti.<\/p>\n

UVA tyrimams \u201ein vivo\u201c b\u016btinos kruop\u0161\u010diai kontroliuojamos tyrimo s\u0105lygos, tinkama dalyvi\u0173 atranka ir kvalifikuotas personalas. D\u0117l \u0161ios prie\u017easties juos tur\u0117t\u0173 atlikti tik laboratorijos, turin\u010dios atitinkam\u0105 patirt\u012f ir u\u017etikrinan\u010dios etin\u0119 prie\u017ei\u016br\u0105.<\/p>\n

Kas yra kritinis bangos ilgis?<\/h2>\n

Kritinis bangos ilgis \u2013 tai matavimo vienetas, naudojamas \u012fvertinti, kokiu spektru saul\u0117s kremas sugeria ultravioletin\u0119 spinduliuot\u0119.<\/p>\n

Jis apskai\u010diuojamas remiantis saul\u0117s kremo UV spinduli\u0173 sug\u0117rimo spektru. Didesnis kritinis bangos ilgis paprastai rodo, kad apsauga apima platesn\u012f UVA spinduli\u0173 diapazon\u0105.<\/p>\n

Pagal Europos Komisijos rekomendacij\u0105 d\u0117l saul\u0117s apsaugos priemoni\u0173 kritinis bangos ilgis tur\u0117t\u0173 b\u016bti ne ma\u017eesnis kaip 370 nm.<\/p>\n

\u0160is reikalavimas padeda \u012frodyti, kad saul\u0117s kremas u\u017etikrina plataus spektro apsaug\u0105, o ne tik stipri\u0105 apsaug\u0105 tik siauroje UV spektro dalyje.<\/p>\n

Kritinio bangos ilgio nereik\u0117t\u0173 painioti su UVA-PF. \u0160ie du matavimai suteikia skirting\u0105 informacij\u0105 ir vertinant saul\u0117s kremo apsaug\u0105 nuo UVA spinduli\u0173 naudojami kartu.<\/p>\n

\u201eUVA Circle\u201c logotipas<\/h2>\n

Daugelyje Europoje parduodam\u0173 saul\u0117s apsaugos priemoni\u0173 ant pakuot\u0117s pavaizduotos raid\u0117s \u201eUVA\u201c apskritime.<\/p>\n

\u0160is simbolis pla\u010diai naudojamas norint nurodyti, kad produktas u\u017etikrina apsaug\u0105 nuo UVA spinduli\u0173, atitinkan\u010di\u0105 Europos Komisijos rekomenduojam\u0105 UVA apsaugos ir SPF santyk\u012f.<\/p>\n

\u0160is simbolis tur\u0117t\u0173 b\u016bti naudojamas tik tuomet, kai produkto apsauga nuo UVA spinduli\u0173 yra tinkamai patvirtinta bandymais.<\/p>\n

Tod\u0117l gamintojai, prie\u0161 ant pakuot\u0117s nurodydami UVA apsaugos nuorodas, tur\u0117t\u0173 u\u017etikrinti, kad i\u0161matuotas UVA apsaugos faktorius atitikt\u0173 rekomenduojam\u0105 minimal\u0173 reikalavim\u0105 \u2013 vien\u0105 tre\u010ddal\u012f etiket\u0117je nurodyto SPF \u2013 ir kad b\u016bt\u0173 laikomasi atitinkam\u0173 pla\u010diojo spektro kriterij\u0173.<\/p>\n

UVA bandym\u0173 rezultat\u0173 dokumentavimas<\/h2>\n

UVA bandym\u0173 ataskaitos tur\u0117t\u0173 b\u016bti saugomos kaip kosmetikos produkto technin\u0117s dokumentacijos dalis.<\/p>\n

Produkto informacijos byloje<\/a>(PIF) turi b\u016bti pateikti \u012frodymai, patvirtinantys kosmetikos gaminiui priskiriamus poveikius, jeigu tai pateisinama gaminio pob\u016bd\u017eiu ar poveikiu.<\/p>\n

Kalbant apie saul\u0117s apsaugos priemon\u0119, kurios etiket\u0117je nurodoma, kad ji apsaugo nuo UVA spinduli\u0173, laboratorini\u0173 tyrim\u0173 ataskaitos ir veiksmingum\u0105 patvirtinanti dokumentacija padeda \u012frodyti, kad vartotojams pateikti teiginiai yra tinkamai pagr\u012fsti.<\/p>\n

Dokumentacijoje tur\u0117t\u0173 b\u016bti ai\u0161kiai nurodytas tiriamas produktas ir taikytas metodas, kad rezultatus b\u016bt\u0173 galima susieti su rinkai pateikta sud\u0117timi.<\/p>\n

Kas nutinka, jei produktas nei\u0161laiko UVA bandymo?<\/h2>\n

Saul\u0117s kremas gali pasiekti numatyt\u0105 SPF rodikl\u012f, ta\u010diau vis tiek nesuteikti pakankamos apsaugos nuo UVA spinduli\u0173.<\/p>\n

Pavyzd\u017eiui, i\u0161matuotas UVA-PF rodiklis gali b\u016bti ma\u017eesnis nei tre\u010ddalis SPF vert\u0117s arba produktas gali nepasiekti numatyto kritinio bangos ilgio.<\/p>\n

Tokiais atvejais gamintojams gali tekti persvarstyti UV filtr\u0173 sistem\u0105, pagerinti fotostabilum\u0105, pakoreguoti sud\u0117t\u012f arba per\u017ei\u016br\u0117ti deklaruojam\u0105 apsaugos lyg\u012f.<\/p>\n

Po esminio sud\u0117ties pakeitimo produkt\u0105 reik\u0117t\u0173 i\u0161 naujo i\u0161bandyti, siekiant patikrinti jo veikim\u0105.<\/p>\n

UVA apsaugos svarba apsaugos nuo saul\u0117s priemon\u0117se<\/h2>\n

UVA spinduli\u0173 tyrimai yra esmin\u0117 apsaugos nuo saul\u0117s priemoni\u0173 veiksmingumo vertinimo Europos rinkoje dalis. Nors SPF pirmiausia matuoja apsaug\u0105 nuo UVB spinduli\u0173, UVA spinduli\u0173 tyrimai parodo, ar produktas taip pat u\u017etikrina tinkam\u0105 apsaug\u0105 ilgesni\u0173 ultravioletini\u0173 bang\u0173 ilgi\u0173 spinduliuot\u0117je.<\/p>\n

Europos Komisijos rekomendacijoje 2006\/647\/EB rekomenduojama, kad UVA apsaugos faktorius sudaryt\u0173 ne ma\u017eiau kaip tre\u010ddal\u012f etiket\u0117je nurodyto SPF, o kritinis bangos ilgis \u2013 ne ma\u017eiau kaip 370 nm. Tarptautiniai standartai, tokie kaip ISO 24443, numato standartizuotus metodus, skirtus UVA fotoprotekcijos vertinimui in vitro.<\/p>\n

Kosmetikos gamintojams UVA tyrimai n\u0117ra vien tik laboratorinis formalumas. Jie suteikia mokslinius \u012frodymus, reikalingus pagr\u012fsti reik\u0161mingus teiginius apie apsaug\u0105 nuo saul\u0117s, tvarkyti tiksli\u0105 produkto dokumentacij\u0105 ir vartotojams u\u017etikrinti subalansuot\u0105 apsaug\u0105 tiek nuo UVA, tiek nuo UVB spinduli\u0173.<\/p>\n","protected":false},"excerpt":{"rendered":"

Apsauga nuo saul\u0117s da\u017enai siejama su SPF, ta\u010diau SPF pirmiausia apib\u016bdina apsaug\u0105 nuo ultravioletini\u0173 B (UVB) spinduli\u0173. Saul\u0117s kremas, u\u017etikrinantis stipri\u0105 apsaug\u0105 nuo UVB spinduli\u0173, neb\u016btinai u\u017etikrina pakankam\u0105 apsaug\u0105 nuo ultravioletini\u0173 A (UVA) spinduli\u0173. D\u0117l \u0161ios prie\u017easties Europos saul\u0117s apsaugos priemoni\u0173 gair\u0117se ypatingas d\u0117mesys skiriamas subalansuotai apsaugai nuo UVB ir UVA spinduli\u0173. Tod\u0117l gamintojai, kuriantys…<\/p>\n","protected":false},"author":294,"featured_media":36935,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4145],"tags":[],"class_list":["post-36933","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-laboratoriniai-tyrimai"],"yoast_head":"\nUVA bandym\u0173 standart\u0173 paai\u0161kinimas - Certified Cosmetics<\/title>\n<meta name=\"description\" content=\"Su\u017einokite, kaip ES atliekami kosmetikos gamini\u0173 UVA bandymai, \u012fskaitant UVA-PF, ISO 24443, kritin\u012f bangos ilg\u012f, bandym\u0173 metodus ir teiginius apie apsaug\u0105 nuo saul\u0117s.\" \/>\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\/lt\/blog\/laboratoriniai-tyrimai\/uva-bandymu-standartu-paaiskinimas\/\" \/>\n<meta property=\"og:locale\" content=\"lt_LT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"UVA bandym\u0173 standart\u0173 paai\u0161kinimas\" \/>\n<meta property=\"og:description\" content=\"Su\u017einokite, kaip ES atliekami kosmetikos gamini\u0173 UVA bandymai, \u012fskaitant UVA-PF, ISO 24443, kritin\u012f bangos ilg\u012f, bandym\u0173 metodus ir teiginius apie apsaug\u0105 nuo saul\u0117s.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.certifiedcosmetics.com\/lt\/blog\/laboratoriniai-tyrimai\/uva-bandymu-standartu-paaiskinimas\/\" \/>\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\u0117s\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/lt\\\/blog\\\/laboratoriniai-tyrimai\\\/uva-bandymu-standartu-paaiskinimas\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/lt\\\/blog\\\/laboratoriniai-tyrimai\\\/uva-bandymu-standartu-paaiskinimas\\\/\"},\"author\":{\"name\":\"Angela\",\"@id\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/lt\\\/#\\\/schema\\\/person\\\/2620f9d56cb0c867784edb68de06746c\"},\"headline\":\"UVA bandym\u0173 standart\u0173 paai\u0161kinimas\",\"datePublished\":\"2026-11-04T19:08:45+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/lt\\\/blog\\\/laboratoriniai-tyrimai\\\/uva-bandymu-standartu-paaiskinimas\\\/\"},\"wordCount\":1327,\"publisher\":{\"@id\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/lt\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/lt\\\/blog\\\/laboratoriniai-tyrimai\\\/uva-bandymu-standartu-paaiskinimas\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/uva-protection.jpg\",\"articleSection\":[\"Laboratoriniai tyrimai\"],\"inLanguage\":\"lt-LT\",\"copyrightYear\":\"2026\",\"copyrightHolder\":{\"@id\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/lt\\\/blog\\\/laboratoriniai-tyrimai\\\/uva-bandymu-standartu-paaiskinimas\\\/\",\"url\":\"https:\\\/\\\/www.certifiedcosmetics.com\\\/lt\\\/blog\\\/laboratoriniai-tyrimai\\\/uva-bandymu-standartu-paaiskinimas\\\/\",\"name\":\"UVA bandym\u0173 standart\u0173 paai\u0161kinimas - 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