A cikin 2019, FDA ta Amurka ta ba da sanarwar wani sabon tsari wanda ke nuna cewa a cikin sinadirai masu aiki 16 masu aiki da hasken rana a halin yanzu a kasuwannin Amurka, ana kara zinc oxide da titanium dioxide zuwa samfuran hasken rana a matsayin "GRASE" (Gaba ɗaya an san shi azaman lafiya da inganci).PABA da Trolamine salicylate ba "GRASE" ba ne don amfani a cikin hasken rana saboda matsalolin tsaro.Duk da haka, an fitar da wannan abun cikin daga mahallin, kuma an fahimci cewa kawai abubuwan da suka shafi hasken rana na jiki-nano zinc oxide da titanium dioxide-suna da lafiya kuma suna da tasiri a cikin kayan aiki masu amfani da hasken rana, sauran sinadaran da ake amfani da su ba su da lafiya da tasiri.A gaskiya ma, fahimtar da ta dace ita ce, ko da yake FDA ta Amurka ta ɗauki nano-zinc oxide da titanium dioxide a matsayin "GRASE", ba yana nufin cewa sauran magungunan 12 na sinadarai ba GRASE ba ne, amma har yanzu sun rasa isasshen bayanan tsaro don nunawa. .A lokaci guda, FDA kuma tana neman kamfanoni masu dacewa don samar da ƙarin bayanan tallafin aminci.
Bugu da ƙari, FDA ta kuma gudanar da gwaji na asibiti akan "ƙarar hasken rana ta hanyar fata a cikin jini" kuma ta gano cewa wasu sinadaran da ke aiki a cikin hasken rana, idan jiki ya shafe shi a matsayi mai girma, na iya haifar da matsalolin lafiya.kasada.Da aka buga sakamakon gwajin, sai suka tada tartsatsi a duniya, kuma a hankali suka haifar da rashin fahimta daga talakawa masu amfani da su, wadanda ba su san gaskiya ba.Sun yi imani kai tsaye cewa abubuwan da ake amfani da su na hasken rana na iya shiga cikin jini kuma ba su da lafiya ga jikin dan adam, kuma ko da a bangare daya sun yi imanin cewa hasken rana yana da illa ga lafiya kuma ba za a iya amfani da shi ba.
An ba da rahoton cewa FDA ta dauki ma'aikatan sa kai 24, an raba su zuwa kungiyoyi 4, kuma sun gwada ma'aunin hasken rana mai dauke da nau'ikan hasken rana guda 4 a cikin dabarar.Na farko , masu aikin sa kai sun ba da gudummawar kashi 75% na fata na jiki duka, bisa ga daidaitaccen adadin 2mg/cm2, sau 4 a rana don kwanaki 4 a jere don amfani da hasken rana.Bayan haka, an tattara samfuran jinin masu sa kai na kwanaki 7 a jere kuma an gwada abubuwan da ke cikin jinin.Nazarin ya nuna cewa yankin fata na babba yana kusan 1.5-2 ㎡ .Ana ɗaukar matsakaiciyar ƙimar 1.8 ㎡, idan an ƙididdige shi bisa ga daidaitaccen adadin, amfani da hasken rana d ta masu aikin sa kai yana kusan 2 × 1.8 × 10000 / 1000 = 36g a cikin gwaji, kuma adadin sau 4 a rana shine 36 × 4 = 144g ku.Yawancin lokaci, yankin fata na fuska yana da kusan 300-350cm², aikace-aikace ɗaya na hasken rana ya isa ya kare dukan yini.Ta wannan hanyar, adadin amfani da aka ƙididdige shi ne 2 × 350/1000 = 0.7g, ko da an haɗa fentin ɗin, kusan 1 .0 ~ 1.5g ne.Idan aka dauki s matsakaicin adadin gram 1.5, lissafin shine 144/1.5= sau 96 .Kuma adadin rigakafin rana da masu aikin sa kai ke amfani da shi na tsawon kwanaki 4 a jere shine 144×4=576g, yayin da adadin hasken rana da talakawa ke amfani da shi a kullum. Kwanaki 4 shine 1.5×4=6g.Saboda haka, bambanci tsakanin adadin gram 576 da gram 6 na rigakafin rana yana da girma sosai kuma tasirinsa a bayyane yake.
Sunscreens da FDA ta gwada a cikin wannan gwaji sune benzophenone-3, octoclilin, avobenzone, da TDSA.Daga cikin su, kawai bayanan gano benzophenone-3 ya wuce abin da ake kira "ƙimar aminci", game da sau 400 fiye da ma'auni, octocrylene da avobenzone duka a cikin sau 10, da p-xylylenedicamphorsulfonic acid Ba a gano shi ba.
A ka'ida, ci gaba da amfani da kariyar rana mai ƙarfi zai haifar da sakamako mai tarin yawa.Ba abin mamaki ba ne cewa ko da sunscreens an gano a cikin jini a karkashin irin wannan matsananci yanayin gwaji.An amince da yin amfani da hasken rana kuma an yi amfani da shi fiye da shekaru da yawa, kasashe da yawa sun tsara magungunan rana a matsayin magunguna, kuma ya zuwa yanzu babu isassun bayanan bincike da ke tabbatar da cewa suna da lahani ga jikin mutum.
Lokacin aikawa: Satumba-09-2022
