{"id":1878,"date":"2020-07-14T20:08:16","date_gmt":"2020-07-14T18:08:16","guid":{"rendered":"https:\/\/www.sensobellezza.be\/?p=1878"},"modified":"2020-11-24T20:57:56","modified_gmt":"2020-11-24T18:57:56","slug":"wat-betekent-spf","status":"publish","type":"post","link":"https:\/\/www.sensobellezza.be\/2020\/07\/14\/wat-betekent-spf\/","title":{"rendered":"Wat betekent SPF?"},"content":{"rendered":"<p>Een goede zonnecr\u00e8me biedt bescherming tegen zowel UVA- als UVB-straling. De beschermingsfactor van een zonnecr\u00e8me wordt aangegeven als de SPF (Sun Protection Factor), en geldt enkel voor UVB-straling.<\/p>\n<p>De SPF-factor geeft aan hoeveel langer iemand die beschermd is m\u00e9t zonnebrandcr\u00e8me, in de zon kan blijven als iemand zonder bescherming, vooraleer er zonnebrand optreedt. Iemand die zonder zonnecr\u00e8me\u00a0na 5\u00a0minuten zou verbranden, zou\u00a0met een zonnecr\u00e8me met SPF 30 dus pas na 150 minuten (of 2,5 uur) verbranden.<\/p>\n<p>In de praktijk hangt de tijd die men in de zon kan blijven zonder te verbranden niet alleen af van de SPF van de zonnebrandcr\u00e8me, maar ook van andere factoren zoals het huidtype, de hoeveelheid zonnebrandcr\u00e8me die men gebruikt, de activiteiten die men doet, enzovoort. Daarom wordt\u00a0aangeraden om jezelf elke 2 uur opnieuw in te smeren, ongeacht de SPF-factor.<\/p>\n<p>Bovendien neemt de bescherming tegen UVB-straling niet lineair toe met de SPF-factor. Dat is eenvoudig te zien in onderstaande tabel die het percentage\u00a0van de UVB-straling weergeeft die gefilterd wordt door zonnecr\u00e8mes met verschillende SPF-factoren. Hieruit blijkt duidelijk dat een zonnecr\u00e8me met SPF 50 slechts 1% meer bescherming biedt dan een zonnecr\u00e8me met SPF 30.<\/p>\n<p>De UVA-factor van een zonnecr\u00e8me moet minstens een derde zijn van de UVB-bescherming, dus minstens 10 voor een SPF 30. Dat beschermt niet alleen tegen zonnebrand, maar is dan ook ideaal naar anti-aging toe.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Een goede zonnecr\u00e8me biedt bescherming tegen zowel UVA- als UVB-straling. De beschermingsfactor van een zonnecr\u00e8me wordt aangegeven als de SPF (Sun Protection Factor), en geldt enkel voor UVB-straling. De SPF-factor geeft aan hoeveel langer iemand die beschermd is m\u00e9t zonnebrandcr\u00e8me, in de zon kan blijven als iemand zonder bescherming, vooraleer er zonnebrand optreedt. Iemand die [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1879,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[117],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Wat betekent SPF? - Senso Bellezza<\/title>\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.sensobellezza.be\/2020\/07\/14\/wat-betekent-spf\/\" \/>\n<meta property=\"og:locale\" content=\"nl_BE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Wat betekent SPF? - Senso Bellezza\" \/>\n<meta property=\"og:description\" content=\"Een goede zonnecr\u00e8me biedt bescherming tegen zowel UVA- als UVB-straling. De beschermingsfactor van een zonnecr\u00e8me wordt aangegeven als de SPF (Sun Protection Factor), en geldt enkel voor UVB-straling. De SPF-factor geeft aan hoeveel langer iemand die beschermd is m\u00e9t zonnebrandcr\u00e8me, in de zon kan blijven als iemand zonder bescherming, vooraleer er zonnebrand optreedt. 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