Muri 2019, FDA US yatangaje icyifuzo gishya kivuga ko mu bikoresho 16 byizuba bifatika ku isoko rya Amerika, muri iki gihe cyongeweho ibicuruzwa byizuba. Paba na Tromune Salishylate ntabwo "bafata" kugirango bakoreshe izuba kubera ibibazo byumutekano. Ariko, ibi bikubiyemo byakuwe mubikorwa, kandi byunvikana ko ari umubiri wizuba ryizuba-nano zinc - bifite umutekano kandi bifite akamaro mubyiciro byizuba, ibindi bikoresho byizuba byizuba ntabwo bifite umutekano kandi bifite akamaro kandi bifite akamaro kandi bifite akamaro. Mubyukuri, gusobanukirwa neza nuko nubwo abakunzi ba NANI-zinc na titanium dioxyde na titanium ", ntibisobanura ko abandi bantu 12 ba chimique batakomeza kwerekana. Muri icyo gihe, FDA izabaza kandi ibigo bireba gutanga amakuru menshi yo gushyigikira umutekano.
Byongeye kandi, FDA yakomeje kandi gushakisha ivuriro ku ruhu mu ruhu mu maraso "asanga ibintu bimwe bikora ku maduka, niba yinjijwe n'umubiri ku rwego rwo hejuru, ashobora guteza ibibazo by'ubuzima. ibyago. Ibisubizo by'ikigeragezo byasohotse ku isi, babyutse ku isi, kandi buhoro buhoro batera ubwumvikane buke n'abaguzi basanzwe batazi ukuri. Bizeraga neza ko izuba ryita ku maraso rishobora kwinjira mu maraso kandi ridafite umutekano w'umubiri, ndetse no ku bantu bose bizeraga ko izuba ryangiza ubuzima kandi ntirishobora gukoreshwa.
Biravugwa ko FDA yashakishije abakorerabushake 24, igabanyijemo amatsinda 4, kandi yipimishije izuba rirenga ririmo izuba 4 ritandukanye muri formula. Icyambere, abakorerabushake batanze 75% byuruhu rwose, ukurikije dosage isanzwe ya 2mg / cm2, inshuro 4 kumunsi muminsi 4 ikurikiranye kugirango ukoreshe izuba. Noneho, ingero zamaraso yabakorerabushake zakusanyirijwe muminsi 7 ikurikiranye hamwe nibirimo byizuba mumaraso byageragejwe. Ubushakashatsi bwerekanye ko agace k'uruhu rw'umuntu mukuru ari hafi 1.5-2 ㎡. Dufashe impuzandengo ya 1.8 ㎡, niba kubarwa ukurikije umubare usanzwe, izuba rikoresha D nabakorerabushake, hamwe nubushakashatsi, hamwe nubushakashatsi bwiminsi 4 × 4 = 144g. Mubisanzwe, t we mumaso yuruhu ni 300-350cm² 300-350cm, porogaramu imwe yo gusaba izuba rirahagije kugirango urinde umunsi wose. Muri ubu buryo, umubare wakoresha ikoreshwa ni 2 × 350/1000 = 0.7G, nubwo yazimiye irimo, ni hafi 1 .0 ~ 1.5G. Niba ufata umubare ntarengwa wa garama 1.5, kubara ni 144 / 1.5 = inshuro 96. Mugihe kinini cyizuba ryiminsi 4 ni 1.5 × 4 = 6G. Kubwibyo, itandukaniro riri hagati yumurimo wa garama 576 na garama 6 yinyanja yizuba nini cyane kandi hagaragara ingaruka.
Izuba ryizuba ryageragejwe na FDA muri iyi kigeragezo ni Benzorinonone-3, octoclilin, avobenzone, na TDSA. Muri bo, gusa amakuru yo kumenya Benzorina
Ubuntu, Gukomeza gukoresha cyane-ubukana bwa suncreen bizatera ingaruka zingana. Ntabwo bitangaje kuba nubwo isi igaragara mumaraso mubihe nkibi bikabije. Izuba ryizuba ryemejwe kandi rikoreshwa mu myaka ishaje, ibihugu byinshi byateguye izuba rirenga nk'imiti, kandi kugeza ubu nta makuru y'ubushakashatsi ahagije yo kwerekana ko bafite ingaruka ku rwego rw'umuntu.
Igihe cya nyuma: Sep-09-2022
