{"id":11424,"date":"2013-07-22T00:00:00","date_gmt":"2013-07-21T22:00:00","guid":{"rendered":"http:\/\/web-server-devel.mgc.es\/fotoproteccio-i-sentit-comu\/"},"modified":"2019-11-22T12:43:42","modified_gmt":"2019-11-22T11:43:42","slug":"fotoproteccio-i-sentit-comu","status":"publish","type":"post","link":"https:\/\/www.mgc.es\/ca\/blog\/fotoproteccio-i-sentit-comu\/","title":{"rendered":"Fotoprotecci\u00f3 i sentit com\u00fa"},"content":{"rendered":"

Les recomanacions de fotoprotecci\u00f3 inclouen mesures que bloquegen l’absorci\u00f3 de la radiaci\u00f3 ultravioleta (UV) per la pell (roba, barret, parasol, filtres solars) combinades amb l’\u00fas del sentit com\u00fa.<\/strong>\"\"<\/p>\n

\u00c9s fonamental per a cada persona con\u00e8ixer el seu fototip, \u00e9s a dir, el tipus de pell respecte a la quantitat de rajos UV que pot suportar sense cremar-se. Quan m\u00e9s clar sigui el fototip, m\u00e9s necessitat de protecci\u00f3. Aix\u00ed mateix, s’ha d’extremar la protecci\u00f3 en nens i adolescents, ja que les cremades al llarg dels primers 20 anys es relacionen amb el risc de desenvolupar un c\u00e0ncer de pell el el futur. La radiaci\u00f3 \u00e9s m\u00e9s intensa entre les 11 i les 16 hores, ra\u00f3 per la qual s’ha d’evitar l’exposici\u00f3 al sol en aquest per\u00edode. L’\u00e0mbit de protecci\u00f3 no s’ha de restringir a la platja, sin\u00f3 a totes les activitats que es realitzen a l’aire lliure, ja sigui d’oci , com esportives o laborals. Hem de recordar que en determinades situacions la intensitat dels rajos UV no disminueix tant com cabria pensar, com els dies nuvolats d’estiu, dins l’aigua o sota un para-sol.<\/p>\n

En l’actualitat, la mesura de fotoprotecci\u00f3 m\u00e9s habitual \u00e9s l’us de cremes amb filtre solar. Es tracta d’uns productes qu\u00edmics que, aplicats sobre la pell, atenuen el risc i l’acci\u00f3 perjudicial de l’exposici\u00f3 als rajos solars. Conv\u00e9 no sobreestimar la seva efic\u00e0cia, ja que no ho s\u00f3n tot en les mesures de protecci\u00f3 al no protegir absolutament de la radiaci\u00f3 ultravioleta (UV). La seva utilitat disminueix si ofereixen una falsa sensaci\u00f3 de seguretat que provoqui m\u00e9s temps d’exposici\u00f3 al sol.<\/p>\n

\"\"L’elecci\u00f3 del protector acostuma a decidir-se en funci\u00f3 del factor de protecci\u00f3 solar (FPS), que \u00e9s l’\u00edndex que mesura la capacitat protectora del filtre davant els UV i que figura a l’etiqueta amb un n\u00famero. Aix\u00ed, un producte amb FPS 15 ens indica que la pell en la que s’aplica pot estar exposada als rajos UVB 15 vegades m\u00e9s temps sense cremar-se que aquesta mateixa pell sense filtre. Per tant, el FPS \u00e9s nom\u00e9s un valor orientatiu sobre el temps durant el qual el filtre evita la cremada solar, i per elevat que sigui no suprimir\u00e0 el bronzejat. Tampoc \u00e9s un valor absolut des del punt de vista que molts factors poden variar l’efecte real del FPS, aix\u00ed com la forma i quantitat de la seva aplicaci\u00f3, el tipus d’excipient, la seva resist\u00e8ncia a l’aigua o la transpiraci\u00f3. Tot i que el m\u00ednim FPS que t\u00e9 utilitat de fotoprotecci\u00f3 \u00e9s el FPS 15, en persones de pell clara \u00e9s necessari l’\u00fas de filtres de FPS 40 a 60.<\/p>\n

Fotoprotectors qu\u00edmics i filtres f\u00edsics<\/h2>\n

Podem distingir dos tipus principals de fotoprotectors segons el seu mecanisme d’acci\u00f3, En primer lloc, els fotoprotectors qu\u00edmics, que absorbeixen la llum solar, evitant aix\u00ed que la radiaci\u00f3 perjudiqui la pell. Per altra banda, existeixen els anomenats filtres f\u00edsics. S\u00f3n subst\u00e0ncies inerts formulades a base de pols minerals que reflecteixen la radiaci\u00f3 com un mirall. Els qu\u00edmics s\u00f3n el tipus de protector m\u00e9s utilitzat ja que s\u00f3n f\u00e0cils d’aplicar i m\u00e9s cosm\u00e8tics, ja que no deixen residus a la pell com els f\u00edsics. \u00c9s necessari posar-los, al menys 30 minuts abans de l’exposici\u00f3 solar, ja que la pell ha d’absorbir el fotoprotector per tal que sigui efica\u00e7.<\/p>\n

A m\u00e9s, al ser absorbits, aquests protectors poden causar al\u00b7l\u00e8rgies o intoler\u00e0ncies, ra\u00f3 per la qual son menys recomanables per als nens. Els filtres f\u00edsics s\u00f3n m\u00e9s efica\u00e7os, ja que bloquegen els UVA i els UVB, actuen des del mateix moment de ser aplicats i tenen menys risc d’al\u00b7l\u00e8rgia. No obstant, en l’actualitat existeixen moltes formulacions que inclouen filtres f\u00edsics i qu\u00edmics, combinant d’aquesta manera efic\u00e0cia i cosm\u00e8tica adequada a cada tipus de pell, ja sigui la m\u00e9s delicada dels nens, com les pells seques que requereixen excipients hidratants o pells grasses que necessiten f\u00f3rmules m\u00e9s fluides.<\/p>\n","protected":false},"excerpt":{"rendered":"

Les recomanacions de fotoprotecci\u00f3 inclouen mesures que bloquegen l’absorci\u00f3 de la radiaci\u00f3 ultravioleta (UV) per la pell (roba, barret, parasol, filtres solars) combinades amb l’\u00fas del sentit com\u00fa.<\/p>\n","protected":false},"author":18,"featured_media":13640,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[994,15],"tags":[481,527],"class_list":["post-11424","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dermatologia","category-salut","tag-prevencio","tag-vacances"],"featured_image_src":"https:\/\/www.mgc.es\/wp-content\/uploads\/2019\/11\/fotoprotector1.jpg","author_info":{"display_name":"Dra. Laura Rodr\u00edguez","author_link":"https:\/\/www.mgc.es\/ca\/blog\/author\/lrodriguez\/"},"yoast_head":"\nFotoprotecci\u00f3 i sentit com\u00fa - MGC M\u00fatua<\/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.mgc.es\/ca\/blog\/fotoproteccio-i-sentit-comu\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fotoprotecci\u00f3 i sentit com\u00fa - MGC M\u00fatua\" \/>\n<meta property=\"og:description\" content=\"Les recomanacions de fotoprotecci\u00f3 inclouen mesures que bloquegen l'absorci\u00f3 de la radiaci\u00f3 ultravioleta (UV) per la pell (roba, barret, parasol, filtres solars) combinades amb l'\u00fas del sentit com\u00fa.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.mgc.es\/ca\/blog\/fotoproteccio-i-sentit-comu\/\" \/>\n<meta property=\"og:site_name\" content=\"MGC M\u00fatua\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/mgcmutua\" \/>\n<meta property=\"article:published_time\" content=\"2013-07-21T22:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-11-22T11:43:42+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.mgc.es\/wp-content\/uploads\/2019\/11\/fotoprotector1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"678\" \/>\n\t<meta property=\"og:image:height\" content=\"402\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Dra. 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