Mu ci, uruhu rwacu rusanga ingaruka zikomeye cyane, zidashobora gukurura gusa gutwika, no no kuba intandaro y'indwara zitandukanye. Izi ngaruka ziranga ubuzima bwa buri munsi mumujyi, aricyo, kuvuga ibiruhuko byo ku mucanga. Kubwibyo, ntabwo ari ngombwa kwirengagiza ikoreshwa ryizuba, guhitamo bitandukanye cyane ku isoko. Ariko ihuza imwe - kuboneka amagambo ahinnye kuri paki. Kubwamahirwe, kuri enterineti amakuru menshi atavugwaho rumwe na SPF. Reka tumenye aho ukuri, kandi aho ibihimbano.
Igipishijwe na SPF
SPF cyangwa ibintu byo kurengera izuba nikiranga giteganijwe gifasha uruhu rwacu kurinda ultraviolet. Izuba rifite spf kuva 6 kugeza 50. Rimwe na rimwe, bandika 50+, ariko biragaragara, bumva uwabikoze munsi yumubare.
Imibare ihagaze nyuma yinyuguti SPF isobanuwe nkubwiyongere mugihe izuba ridafite ingaruka ku ruhu mu mubare wagenwe. Nibyo, niba uruhu rwawe ruri hejuru yizuba muminota 10 (ukurikije ubwoko bwuruhu, akagaciro gashobora kuva muminota 5 kugeza 30), bisa na SPF 20, bisa nkaho ari ibiranga umutekano kuri 10 × 20 = iminota 200. Ibi bisobanuro bifite ibisubizo byingenzi: Bigaragara ko SPF 6 na SPF 50 irinda uruhu kimwe, ingaruka za kabiri, kandi mu byukuri, agaciro ka SPF iranga ijanisha rya UV Imirasire, kurinda itanga inzira. SPF 15 izarinda 93.3%, SPF 30 - kuva 96.7%, na SPF 50 ni kuva 98%. Ntabwo igomba kuvuga kubyerekeye kurinda cyane niba bibaye, hanyuma muburyo bwijanisha. Mbere, abamamaza amayeri, batwaye, banditse ku mapaki agaciro ka SPF 100 na 150. Uyu munsi birabujijwe kandi ntibisobanura umuguzi.
Niba tuvuze urwego rwo kurinda munsi ya 15, mubyukuri, gukoresha amafaranga ntabwo bihagije. Mu kuvuga neza, basimbuka ultraviolet ihagije kugirango bakoreshe ibiryo. Kurugero, hamwe na spf 6 kuruhu, 16.7% yimitungo izabona, birumvikana ko bidashobora gufatwa nkigipimo cyiza.
Ubwunganizi bumara igihe kingana iki
Agaciro ka SPF ugomba kugenwa muburyo butaziguye, ukurikije ubwoko bwuruhu, ariko ntabwo kuva mugihe bikaba bisabwa kumara izuba. Niba tuvuga kubyerekeye ingaruka, biterwa nubwoya muyungurura, kimwe no kumiterere yingaruka.
Akayunguruzo ni imiti (kurugero, autobenzon, benzopherinone) hamwe numubiri (zinc oxide cyangwa titanium dioxyde). Baratandukanye ku ihame ryakazi. Mugihe kimwe, muyunguruzi yimiti hazaba ingirakamaro mugihe ukoreshwa mubuzima bwa buri munsi - ku mucanga barashobora kuzana ibibi kuruta ibyiza. Nyuma yamasaha abiri, imiterere yabyo itangira kubahindura ku zuba, kandi birashoboka kubarinda gukuramo neza no kuyiha igikoresho.
Kuyungurura umubiri ntabwo ari byiza, ku mucanga birakwiye kubikoresha. Ariko buhoro buhoro babura akamaro kabo, ukoza cyangwa guhanagurwa nkibisubizo byingaruka za mashini. Bagomba kandi kuvugururwa buri masaha 3-5, kimwe na buri gihe nyuma yo kwiyuhagira. Izuba Rirashe ryamazi rikurura abakiriya bamwe bakora bagenewe kurinda uruhu mu buryo butaziguye mugihe cyo koga (yego, amazi nabyo bikubura ultraviolet). Ariko, nyuma yo gusubira ku nkombe, uburinzi bugomba no kongerwa.
Kuri spectra ya uv imirasire
Ntibishoboka kutavuga specrac yimirasiri ya ultraviolet. Imirasire yuburyo muri (UVB) itandukanijwe, itera gucana, n'imirasire ya spectrum, a (uva) ishinzwe gusaza uruhu. Uhereye kubibanza birinda izuba ryinshi. Kurinda imirasire yihuta, kandi hari uburyo hamwe na marike ya UVA kuri paki. Kuba ubutabera dukwiye kuvugwa ko uburyo bwo guhura nizi mirasire ku ruhu ntabwo bwize byimazeyo, kandi bamwe mu bahanga bashidikanya ko ari ingirakamaro mu burinzi.
Urashobora kuvuga neza ko bikwiye gukoresha inama zisanzwe zo kugabanya amafoto - kugirango ugabanye igihe cyo kuguma ku zuba, ntukajye hanze mugihe cyizuba cyane - kuva kumasaha 12 kugeza kuri 15 kugeza kuri 15 kugeza kuri 15 kugeza kuri 15 kugeza kuri 15 kugeza kuri 15 kugeza kuri 15. Ntiwibagirwe ko imyenda isanzwe nayo ibura imirasire ikomeye yihuta a, ni ukuvuga ko irinda kurwanya, ariko ntizikiza gusaza, kugaragara kwumva.
Ese kwisiga bishushanya birinda?
Kubijyanye no kwisiga nishimye hamwe na SpF, imiterere yo kurinda ntabwo ari hejuru cyane, kandi nizuba ryinshi, nibyiza gukomeza gutondeka izuba ryihariye. Ariko, akenshi kwisiga bihagije. Kurugero, ifu yo gushushanya yinjiye neza ultraviolet, itanga SPF 15-20. Muri icyo gihe, ntabwo ari amanota y'uruhu, nayo ni ngombwa cyane mu cyi.
Ntabwo ari ngombwa kwitondera amafaranga menshi yamafaranga no kuba icyamamare. Kuva kwisiga bisezeranya SPF 30 cyangwa 50, cyangwa ibindi bitigeze bibaho "kurwanya anti-imyaka" ntugomba gutegereza ikintu kidasanzwe. Ibi byose ntakindi uretse amagambo. Ku mucanga uracyakoresha ibisanzwe, ariko byagaragaye ko bivuze ko izarinda uburinzi bwizewe.