{"id":16435,"date":"2025-05-22T21:18:23","date_gmt":"2025-05-22T19:18:23","guid":{"rendered":"https:\/\/octean.se\/senaste-nytt\/?p=16435"},"modified":"2025-06-11T15:52:48","modified_gmt":"2025-06-11T13:52:48","slug":"harsackar","status":"publish","type":"post","link":"https:\/\/octean.se\/senaste-nytt\/harsackar\/","title":{"rendered":"H\u00e5rs\u00e4ckarna – S\u00e5 fungerar tillv\u00e4xtfasen, \u00f6verg\u00e5ngsfasen och vilofasen"},"content":{"rendered":"\t\t
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H\u00e5ret vi ser p\u00e5 huvudet har sin b\u00f6rjan l\u00e5ngt under huden \u2013 i h\u00e5rs\u00e4cken. Det \u00e4r d\u00e4r allt b\u00f6rjar. H\u00e5rs\u00e4ckarna \u00e4r sm\u00e5 men avancerade strukturer som styr hela h\u00e5rets livscykel, fr\u00e5n att ett nytt h\u00e5rstr\u00e5 v\u00e4xer fram till att det s\u00e5 sm\u00e5ningom faller av.<\/p>

H\u00e5rs\u00e4ckarnas uppbyggnad<\/h2>

T\u00e4nk dig h\u00e5rs\u00e4cken som en liten biologisk fabrik. D\u00e4r inne sker ett komplext men samordnat arbete f\u00f6r att skapa och underh\u00e5lla h\u00e5r. F\u00f6r att fabriken ska fungera beh\u00f6ver den r\u00e4tt sorts celler, syre, och en stadig tillg\u00e5ng p\u00e5 n\u00e4ring.<\/p>

Struktur och anatomi<\/h3>

Varje h\u00e5rs\u00e4ck sitter djupt i huden och best\u00e5r av flera lager. Ytterst finns en skyddande hylsa. Inuti finner vi h\u00e5rroten och l\u00e4ngst ner h\u00e5rbulben, d\u00e4r nya h\u00e5rceller bildas.<\/p>

Kring h\u00e5rs\u00e4cken sitter sm\u00e5 talgk\u00f6rtlar som ser till att h\u00e5ret f\u00f6rblir mjukt och inte torkar ut. Kopplat till varje h\u00e5rs\u00e4ck \u00e4r muskeln arrector pili. Det \u00e4r den som ger dig g\u00e5shud n\u00e4r du fryser eller blir r\u00e4dd.<\/p><\/colgroup>

Del<\/strong><\/p><\/th>

Funktion<\/strong><\/p><\/th><\/tr>

Hylsa<\/p><\/td>

Skyddar och omsluter h\u00e5ret<\/p><\/td><\/tr>

H\u00e5rrot<\/p><\/td>

D\u00e4r h\u00e5ret v\u00e4xer fram<\/p><\/td><\/tr>

Bulb<\/p><\/td>

Tillverkar nya h\u00e5rceller<\/p><\/td><\/tr>

Talgk\u00f6rtel<\/p><\/td>

Sm\u00f6rjer h\u00e5r och hud<\/p><\/td><\/tr>

Liten muskel<\/p><\/td>

Reser h\u00e5ret vid kyla eller r\u00e4dsla<\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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De viktigaste celltyperna<\/h3>

Flera olika celltyper arbetar tillsammans inne i h\u00e5rs\u00e4cken. Matrixcellerna, som finns l\u00e4ngst ner i bulben, \u00e4r motorn i produktionen av nya h\u00e5rceller. Dessa celler trycks upp\u00e5t och bildar s\u00e5 sm\u00e5ningom sj\u00e4lva h\u00e5rstr\u00e5et.<\/p>

Melanocyter finns ocks\u00e5 h\u00e4r och blandas in i produktionen f\u00f6r att ge h\u00e5ret dess f\u00e4rg. Utan dem hade allt h\u00e5r varit pigmentl\u00f6st. Andra celler fungerar som st\u00f6d och skydd f\u00f6r att hela systemet ska fungera.<\/p>

Ytan av h\u00e5rs\u00e4cken t\u00e4cks av hudceller som agerar skydd mot bakterier. Alla dessa delar \u00e4r n\u00f6dv\u00e4ndiga f\u00f6r att du ska f\u00e5 ett starkt, h\u00e4lsosamt och f\u00e4rgrikt h\u00e5r.<\/p>

Blodfl\u00f6de och n\u00e4ring<\/h3>

Under h\u00e5rs\u00e4cken finns ett n\u00e4t av blodk\u00e4rl som levererar syre och n\u00e4ring till h\u00e5rroten. N\u00e4r blodfl\u00f6det \u00e4r gott f\u00e5r h\u00e5rs\u00e4cken de byggstenar den beh\u00f6ver. Men om cirkulationen av n\u00e5gon anledning f\u00f6rs\u00e4mras, kan det bromsa tillv\u00e4xten.<\/p>

Viktiga n\u00e4rings\u00e4mnen f\u00f6r h\u00e5ret \u00e4r bland annat B-vitaminer, E-vitamin och j\u00e4rn. H\u00e5rs\u00e4ckens f\u00f6rm\u00e5ga att ta upp n\u00e4ring styrs till stor del av hur v\u00e4l blodet n\u00e5r ner till papillan \u2013 en liten struktur i h\u00e5rbulben d\u00e4r allt samlas och levereras.<\/p>

H\u00e5rs\u00e4ckarnas funktion och betydelse<\/h2>

Skyddande och sensoriska egenskaper<\/h3>

H\u00e5r g\u00f6r mer \u00e4n att se bra ut. Det fungerar som skydd mot UV-str\u00e5lning och kyla. \u00d6gonfransar och \u00f6gonbryn fungerar som barri\u00e4r mot damm och svett.<\/p>

Runt h\u00e5rs\u00e4cken finns sm\u00e5 nerver som g\u00f6r att du kan k\u00e4nna l\u00e4tta ber\u00f6ringar och r\u00f6relser p\u00e5 huden. H\u00e5ret fungerar allts\u00e5 lite som kroppens sm\u00e5 k\u00e4nselantenner.<\/p>

Skillnader hos olika h\u00e5rtyper<\/h3>

Formen p\u00e5 h\u00e5rs\u00e4cken avg\u00f6r om h\u00e5ret blir rakt, lockigt eller v\u00e5gigt. Med \u00e5ldern kan b\u00e5de struktur och f\u00e4rg f\u00f6r\u00e4ndras. Beroende p\u00e5 var p\u00e5 kroppen h\u00e5ret v\u00e4xer och hur h\u00e5rs\u00e4cken \u00e4r formad, f\u00e5r vi olika h\u00e5rtyper.<\/p><\/colgroup>

H\u00e5rtyp<\/strong><\/p><\/td>

Struktur<\/strong><\/p><\/td>

Funktion<\/strong><\/p><\/td><\/tr>

Huvudh\u00e5r<\/p><\/td>

Tjockt, l\u00e5ngt<\/p><\/td>

Skydd och isolering<\/p><\/td><\/tr>

\u00d6gonbryn\/fransar<\/p><\/td>

Korta, b\u00f6jda<\/p><\/td>

Skydd f\u00f6r \u00f6gonen<\/p><\/td><\/tr>

Kroppsh\u00e5r<\/p><\/td>

Fint, tunnare<\/p><\/td>

Temperaturreglering och k\u00e4nsel<\/p><\/td><\/tr><\/tbody><\/table>

H\u00e5rets tillv\u00e4xtfaser<\/h2>

Tillv\u00e4xtfasen (Anagen fas)<\/h3>

Detta \u00e4r den aktiva fasen d\u00e5 h\u00e5ret v\u00e4xer. Den kan vara mellan 2 och 7 \u00e5r beroende p\u00e5 individ och kroppsdel. Upp till 90 % av h\u00e5ret befinner sig i denna fas.<\/p>

  • L\u00e4ngd:<\/strong> 2\u20137 \u00e5r<\/li>
  • Andel h\u00e5r i fasen:<\/strong> 80\u201390 %<\/li>
  • Tillv\u00e4xttakt:<\/strong> cirka 1\u20131,5 cm\/m\u00e5nad<\/li><\/ul>

    \u00d6verg\u00e5ngsfasen (Katagen fas)<\/h3>

    En kort fas p\u00e5 2\u20133 veckor d\u00e5 tillv\u00e4xten avstannar. H\u00e5rs\u00e4cken krymper och kopplingen till blodcirkulationen minskar.<\/p>

    • H\u00e5ret slutar v\u00e4xa<\/li>
    • H\u00e5rs\u00e4cken drar sig tillbaka<\/li>
    • Endast 1\u20132 % av h\u00e5ret \u00e4r i denna fas samtidigt<\/li><\/ul>

      Vilofasen (Telogen fas)<\/h3>

      Den sista fasen varar 2\u20134 m\u00e5nader. H\u00e5ret vilar, f\u00e4lls och ers\u00e4tts.<\/p>

      • Cirka 10\u201315 % av h\u00e5ret befinner sig h\u00e4r<\/li>
      • Det \u00e4r normalt att tappa 50\u2013100 h\u00e5rstr\u00e5n per dag<\/li><\/ul>

        Efter vilofasen b\u00f6rjar ett nytt h\u00e5rstr\u00e5 v\u00e4xa fr\u00e5n samma s\u00e4ck, och hela processen startar om.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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        Vanliga fr\u00e5gor<\/h2>

        Vad h\u00e4nder under tillv\u00e4xtfasen av h\u00e5ret?<\/h3>

        Tillv\u00e4xtfasen kallas f\u00f6r anagen fas. Under denna tid v\u00e4xer ditt h\u00e5r snabbt och h\u00e5rroten \u00e4r aktiv och producerar nya celler. Den h\u00e4r fasen kan vara i flera \u00e5r.<\/p>

        Hur l\u00e4nge varar \u00f6verg\u00e5ngsfasen f\u00f6r h\u00e5rs\u00e4ckarna?<\/h3>

        \u00d6verg\u00e5ngsfasen, eller den katagena fasen, brukar bara vara n\u00e5gra veckor. Under denna tid slutar h\u00e5rstr\u00e5et att v\u00e4xa och h\u00e5rs\u00e4cken krymper sakta.<\/p>

        Vilka faktorer p\u00e5verkar h\u00e5rets vilofas?<\/h3>

        Vilofasen heter telogen fas och kan vara i n\u00e5gra m\u00e5nader. Under denna fas vilar h\u00e5ret innan det slutligen faller av. Stress, sjukdom, n\u00e4ring och \u00e5lder kan p\u00e5verka hur l\u00e4nge ditt h\u00e5r stannar i vilofasen.<\/p>

        Vilka \u00e4r de mest kritiska komponenterna i uppbyggnaden av ett h\u00e5rstr\u00e5?<\/h3>

        Ett h\u00e5rstr\u00e5 best\u00e5r fr\u00e4mst av keratin, som \u00e4r ett starkt protein. H\u00e5rstr\u00e5et har tre delar: medulla (inre k\u00e4rna), cortex (mitten) och kutikula (yttersta lagret).<\/p>

        Vad inneb\u00e4r det n\u00e4r flera h\u00e5rstr\u00e5n v\u00e4xer ur samma h\u00e5rs\u00e4ck?<\/h3>

        Det \u00e4r normalt att ha tv\u00e5 eller tre h\u00e5rstr\u00e5n i en och samma h\u00e5rs\u00e4ck. Det g\u00f6r att ditt h\u00e5r ser fylligare ut och k\u00e4nns tjockare.<\/p>

        P\u00e5 vilket s\u00e4tt kan h\u00e5rets tillv\u00e4xt p\u00e5verkas efter att man har rakat sig?<\/h3>

        Att raka sig f\u00f6r\u00e4ndrar inte hur snabbt eller tjockt h\u00e5ret v\u00e4xer. Ditt h\u00e5r kan dock k\u00e4nnas gr\u00f6vre n\u00e4r det v\u00e4xer ut eftersom det kapas rakt av.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

        H\u00e5ret vi ser p\u00e5 huvudet har sin b\u00f6rjan l\u00e5ngt under huden \u2013 i h\u00e5rs\u00e4cken. Det \u00e4r d\u00e4r allt b\u00f6rjar. H\u00e5rs\u00e4ckarna \u00e4r sm\u00e5 men avancerade strukturer som styr hela h\u00e5rets livscykel, fr\u00e5n att ett nytt h\u00e5rstr\u00e5 v\u00e4xer fram till att det s\u00e5 sm\u00e5ningom faller av. H\u00e5rs\u00e4ckarnas uppbyggnad T\u00e4nk dig h\u00e5rs\u00e4cken som en liten biologisk fabrik. D\u00e4r […]<\/p>\n","protected":false},"author":162,"featured_media":16457,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1,37],"tags":[],"class_list":["post-16435","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogg","category-har"],"yoast_head":"\nH\u00e5rs\u00e4ckarna - Tillv\u00e4xtfasen, \u00f6verg\u00e5ngsfasen och vilofasen · Octean<\/title>\n<meta name=\"description\" content=\"H\u00e5rs\u00e4ckarna \u00e4r grunden f\u00f6r h\u00e5rv\u00e4xt och g\u00e5r igenom olika faser: tillv\u00e4xt, \u00f6verg\u00e5ng och vila. H\u00e4r f\u00e5r du en enkel f\u00f6rklaring p\u00e5 hur h\u00e5rs\u00e4ckarna fungerar och vad som p\u00e5verkar deras cykler.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/octean.se\/senaste-nytt\/harsackar\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"H\u00e5rs\u00e4ckarna - Tillv\u00e4xtfasen, \u00f6verg\u00e5ngsfasen och vilofasen · Octean\" \/>\n<meta property=\"og:description\" content=\"H\u00e5rs\u00e4ckarna \u00e4r grunden f\u00f6r h\u00e5rv\u00e4xt och g\u00e5r igenom olika faser: tillv\u00e4xt, \u00f6verg\u00e5ng och vila. 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