In 2019, the US FDA announced a new proposal stating that among the 16 sunscreen active ingredients currently on the US market, zinc oxide and titanium dioxide are added to sunscreen products as “GRASE” (Generally recognized as safe and effective). PABA da Trolamine simicine ba "grase" don amfani a cikinscreenens saboda matsalolin aminci. Koyaya, wannan abun ciki an ɗauke shi daga mahallin, kuma ana fahimtar cewa kawai jami'in kare hersions da titanium dioxide sinadarai, da sauran manyan jami'an suncreen sunadarai ba shi da lafiya kuma mai tasiri. A zahiri, fahimtar daidai shi ne cewa duk da cewa US FDA Oxide da titanium dioxide wakilai su zama "Grase". A lokaci guda, har ila yau, FDA kuma tana tambayar kamfanoni masu dacewa don samar da ƙarin bayanan tallafi na aminci.
Bugu da kari, FDA kuma ta gudanar da shari'ar asibiti a kan "hasken rana mai aiki a cikin jini" kuma ya gano cewa jiki mai aiki a cikin wani babban mataki, na iya haifar da matsalolin lafiya. hadarin. Da zaran sakamakon an buga gwajin, sun kawo tidimar tattaunawa a duniya, kuma sannu a hankali ya haifar da rashin fahimta da masu amfani da su talakawa wadanda ba su san gaskiya ba. Sun yi imani kai tsaye cewa suncreens na iya shiga cikin jini ba shi da haɗari ga jikin mutum, har ma da-da-da-da-da-da-da-da-da-da-daure sun yi imani da cewa suncreens da ba za a iya amfani da su ba.
An ba da rahoton cewa FDA ta sake daukar masu ba da gudummawa 24, sun kasu kashi 4, kuma an gwada suscreens 4 daban-daban suncreens a cikin dabara. First ly , the volunteers contributed 75% of the whole body skin, according to the standard dosage of 2mg/cm2, 4 times a day for 4 consecutive days to use sunscreen. Sannan, samfuran jini na masu sa kai an tattara don kwanaki 7 a jere da abubuwan da aka samu na hasken rana a cikin jini. Bincike ya nuna cewa yankin fata na dattijo shi ne kusan 1.5-2 ㎡. Da ɗaukar matsakaicin darajar 1.8 ㎡, idan an lissafta shi gwargwadon daidaitaccen adadin, ana amfani da su na 3/1000 × 4 sau 4 a rana shine 36 × 4 = 144g. Yawancin lokaci, a bayyanar yanki fata shine kusan 30050cm², aikace-aikace ɗaya na hasken rana ya isa don kare ranar gaba. Ta wannan hanyar, adadin amfani da lissafin shine 2 × 390/1000/1000/1000/1000/1000/1000/1000/1000 koda an haɗa da Reporint, yana da kusan 1 .0 ~ 1.5g. Idan an yi matsakaicin adadin 1.5 grams, da lissafin shine 144 / 1.5 = sau 97.50 sau da yawa ana amfani da hasken rana 4 = 6G. Saboda haka, bambanci tsakanin sashi na 576 grams da 6 grams na hasken rana yana da girma sosai kuma tasirin a bayyane yake.
An gwada suncreens na suncreens ta FDA a wannan gwajin sune Benzophenone-3, Ococlilin, Avobenzone, da TDSa, da TDSa. Daga gare su, kawai gano bayanai na Benzophenone-3 nisa da ya wuce Standard, Ottocrylene da Avobenedicone suna cikin sau 10, da kuma p-xylyleendicamphorthPhorsulonicphorsulonic acid ba a gano shi ba.
A bayyane, cigaba da amfani da high-tsananin amfani da hasken rana zai haifar da tashe-tashen hankula. Ba abin mamaki bane cewa har ma ana gano su a cikin jini a ƙarƙashin wannan matsanancin gwajin. An yarda da SUNSCreens kuma anyi amfani dashi fiye da shekarun da suka gabata, ƙasashe da yawa sun tsara hasken rana a matsayin magunguna don tabbatar da cewa suna da sakamako masu illa ga jikin mutum.
Lokaci: Satumba 09-2022
