Dab tsi yog Nanoparticles hauv Sunscreen?

Koj tau txiav txim siab tias kev siv tshuaj pleev thaiv hnub ntuj yog qhov kev xaiv zoo rau koj. Tej zaum koj xav tias nws yog qhov kev xaiv noj qab haus huv rau koj thiab ib puag ncig, los yog tshuaj pleev thaiv hnub nrog cov khoom xyaw hluavtaws ua rau koj cov tawv nqaij zoo nkauj heev.

Tom qab ntawd koj hnov ​​​​txog "nanoparticles" hauv qee cov tshuaj pleev thaiv hnub ntuj, nrog rau qee cov ntaub ntawv ceeb toom thiab tsis sib haum xeeb txog cov lus hais uas ua rau koj nres. Tiag tiag, puas yog xaiv cov tshuaj pleev thaiv hnub ntuj yuav tsum yog qhov tsis meej pem?

Nrog ntau cov ntaub ntawv tawm muaj, nws tuaj yeem zoo li nyuaj. Yog li, cia peb txiav los ntawm lub suab nrov thiab ua tib zoo saib ntawm nanoparticles hauv cov tshuaj pleev thaiv hnub, lawv txoj kev nyab xeeb, yog vim li cas koj thiaj li xav tau lawv hauv koj cov tshuaj pleev thaiv hnub thiab thaum koj tsis kam.

Nanoparticles yog dab tsi?

Nanoparticles yog incredibly me me hais ntawm ib tug muab tshuaj. Nanoparticles tsawg dua 100 nanometers tuab. Txhawm rau muab qee qhov kev xav, tus nanometer yog 1000 npaug me dua li qhov tuab ntawm ib txoj hlua ntawm cov plaub hau.

Thaum nanoparticles tuaj yeem tsim tau ib txwm muaj, xws li minuscule droplets ntawm hiav txwv tsuag piv txwv, feem ntau nanoparticles yog tsim nyob rau hauv lub chaw kuaj. Rau cov tshuaj pleev thaiv hnub, nanoparticles hauv nqe lus nug yog zinc oxide thiab titanium dioxide. Cov khoom xyaw no tau tawg mus rau hauv cov khoom zoo heev ua ntej muab ntxiv rau koj cov tshuaj pleev thaiv hnub.

Nanoparticles thawj zaug tau muaj nyob rau hauv cov tshuaj pleev thaiv hnub hauv xyoo 1980, tab sis tsis tau ntes mus txog thaum xyoo 1990. Niaj hnub no, koj tuaj yeem xav tias koj cov tshuaj pleev thaiv hnub ntuj nrog zinc oxide thiab / lossis titanium dioxide yog nano-sized particles tshwj tsis yog hais tias lwm yam.

Cov ntsiab lus "nano" thiab "micronized" yog synonymous. Yog li, tshuaj pleev thaiv hnub tiv thaiv "micronized zinc oxide" lossis "micronized titanium dioxide" daim ntawv lo muaj nanoparticles.

Nanoparticles tsis yog pom nyob rau hauv cov tshuaj pleev thaiv hnub xwb. Ntau yam khoom tu tawv nqaij thiab tshuaj pleev ib ce, xws li cov hauv paus, tshuaj zawv plaub hau, thiab tshuaj txhuam hniav, feem ntau muaj cov khoom xyaw micronized. Nanoparticles kuj siv rau hauv electronics, fabrics, scratch-resistant iav, thiab lwm yam.

Nanoparticles khaws cov tshuaj tiv thaiv ntuj los ntawm tso cov yeeb yaj kiab dawb ntawm koj daim tawv nqaij

Thaum xaiv koj cov tshuaj pleev thaiv hnub ntuj, koj muaj ob txoj kev xaiv; cov uas muaj nanoparticles thiab cov uas tsis muaj. Qhov sib txawv ntawm ob yuav tshwm sim ntawm koj daim tawv nqaij.

Ob qho tib si titanium dioxide thiab zinc oxide tau pom zoo los ntawm FDA ua cov khoom siv tshuaj pleev thaiv hnub ntuj. Lawv txhua tus muab broad-spectrum UV tiv thaiv, txawm hais tias titanium dioxide ua haujlwm zoo tshaj plaws thaum ua ke nrog zinc oxide lossis lwm cov tshuaj pleev thaiv hnub hluavtaws.

Zinc oxide thiab titanium dioxide ua haujlwm los ntawm kev cuam tshuam UV rays deb ntawm daim tawv nqaij, tiv thaiv daim tawv nqaij los ntawm lub hnub. Thiab lawv tau zoo heev.

Hauv lawv daim ntawv tsis tu ncua, tsis yog nano loj, zinc oxide thiab titanium dioxide yog dawb heev. Thaum muab tso rau hauv cov tshuaj pleev thaiv hnub, lawv yuav tawm cov yeeb yaj kiab dawb opaque thoob plaws ntawm daim tawv nqaij. Xav txog tus neeg saib xyuas lub neej nrog dawb hla tus choj ntawm lub qhov ntswg - yog, qhov ntawd yog zinc oxide.

Nkag mus rau nanoparticles. Cov tshuaj pleev thaiv hnub ua los ntawm micronized zinc oxide thiab titanium dioxide rub rau hauv daim tawv nqaij zoo dua, thiab yuav tsis tawm tom qab qhov zoo nkauj. Cov nanoparticles ultra-fine ua rau cov tshuaj pleev thaiv hnub tsis tshua muaj opaque tab sis tsuas yog siv tau.

Feem ntau ntawm kev tshawb fawb pom Nanoparticles hauv Sunscreen Safe

Los ntawm qhov peb paub tam sim no, nws tsis zoo li tias nanoparticles ntawm zinc oxide lossis titanium dioxide muaj teeb meem nyob rau hauv ib txoj kev. Txawm li cas los xij, qhov cuam tshuam ntev ntawm kev siv micronized zinc oxide thiab titanium dioxide, yog qhov tsis paub meej. Hauv lwm lo lus, tsis muaj pov thawj tias kev siv mus sij hawm ntev muaj kev nyab xeeb tag nrho, tab sis tsis muaj pov thawj tias nws muaj kev phom sij.

Qee tus tau nug txog kev nyab xeeb ntawm cov micronized hais. Vim tias lawv me me, lawv tuaj yeem nqus tau los ntawm daim tawv nqaij thiab rau hauv lub cev. Ntau npaum li cas yog absorbed thiab tob npaum li cas lawv nkag mus nyob ntawm seb cov zinc oxide los yog titanium dioxide me me npaum li cas, thiab lawv yuav xa li cas.

Rau kev ncaws pob, yuav ua li cas rau koj lub cev yog zinc oxide lossis titanium dioxide nano-particles absorbed? Hmoov tsis zoo, tsis muaj cov lus teb meej meej rau qhov ntawd, ib yam nkaus.

Muaj kev cia siab tias lawv tuaj yeem ntxhov siab thiab ua rau peb lub cev lub cev puas tsuaj, ua kom cov laus nyob sab hauv thiab sab nraud. Tab sis kev tshawb fawb ntxiv yuav tsum tau ua kom paub meej ib txoj kev lossis lwm qhov.

Titanium dioxide, thaum nyob rau hauv nws daim ntawv hmoov thiab nqus tau pa, tau pom tias ua rau mob qog noj ntshav hauv cov nas tsuag. Micronized titanium dioxide kuj nkag mus rau ntawm daim tawv nqaij ntau dua li micronized zinc oxide, thiab titanium dioxide tau pom tias dhau los ntawm cov placenta thiab txuas cov hlab ntsha hauv hlwb.

Nco ntsoov, txawm li cas los xij, ntau ntawm cov ntaub ntawv no los ntawm kev noj titanium dioxide (vim nws pom muaj ntau yam khoom noj thiab khoom qab zib). Los ntawm ntau cov kev tshawb fawb ntawm topically thov micronized titanium dioxide thiab zinc oxide, tsuas yog qee zaus cov khoom xyaw no pom nyob rau hauv daim tawv nqaij, thiab txawm tias tom qab ntawd lawv nyob rau hauv tsawg heev.

Qhov ntawd txhais tau hais tias txawm tias koj siv cov tshuaj pleev thaiv hnub uas muaj nanoparticles, lawv yuav tsis txawm nqus los ntawm thawj txheej ntawm daim tawv nqaij. Tus nqi absorbed txawv heev nyob ntawm seb cov tshuaj pleev thaiv hnub, thiab ntau ntawm nws yuav tsis nqus tob heev yog tias tag nrho.

Nrog rau cov ntaub ntawv uas peb muaj tam sim no, tshuaj pleev thaiv hnub uas muaj nanoparticles zoo li muaj kev nyab xeeb thiab zoo heev. Tsis tshua meej yog qhov kev siv mus sij hawm ntev ntawm cov khoom yuav muaj rau koj kev noj qab haus huv, tshwj xeeb tshaj yog tias koj siv cov khoom txhua hnub. Ib zaug ntxiv, tsis muaj pov thawj tias kev siv micronized zinc oxide los yog titanium dioxide mus ntev, peb tsuas yog tsis paub tias nws muaj txiaj ntsig dab tsi (yog tias muaj) ntawm koj cov tawv nqaij lossis lub cev.

Ib Lo Lus Los ntawm Verywell

Ua ntej, nco ntsoov tias hnav cov tshuaj pleev thaiv hnub txhua hnub yog ib qho zoo tshaj plaws uas koj tuaj yeem ua rau kev noj qab haus huv ntawm koj cov tawv nqaij mus ntev (thiab nws yog txoj kev tiv thaiv kev laus zoo tshaj plaws). Yog li, ua tsaug rau koj rau kev tiv thaiv koj cov tawv nqaij!

Muaj ntau ntau yam tshuaj pleev thaiv hnub ntuj muaj, ob qho tib si nano thiab tsis-nano xaiv, muaj qhov khoom muaj tseeb rau koj. Siv cov tshuaj pleev thaiv hnub nrog micronized (AKA nano-particle) zinc oxide lossis titanium dioxide yuav muab rau koj cov khoom uas tsis tshua muaj pasty thiab rubs ntau dua.

Yog tias koj txhawj xeeb txog nano-particles, siv cov tshuaj pleev thaiv hnub uas tsis yog-micronized yuav ua rau koj cov khoom loj dua uas tsis tshua muaj peev xwm nqus tau los ntawm koj cov tawv nqaij. Kev lag luam tawm yog koj yuav pom cov yeeb yaj kiab dawb ntawm koj daim tawv nqaij tom qab thov.

Lwm qhov kev xaiv yog tias koj txhawj xeeb yog kom tsis txhob muaj cov khoom lag luam micronized titanium dioxide tag nrho, vim tias cov khoom xyaw no yog ib qho uas tau txuas rau cov teeb meem kev mob nkeeg. Nco ntsoov, txawm li cas los xij, feem ntau ntawm cov teeb meem no yog los ntawm kev nqus lossis nqus cov titanium dioxide nanoparticles, thiab tsis yog los ntawm kev nqus ntawm daim tawv nqaij.

Cov tshuaj pleev thaiv hnub ntuj, ob qho tib si micronized thiab tsis, sib txawv heev hauv lawv qhov sib xws thiab hnov ​​​​ntawm daim tawv nqaij. Yog li, yog tias ib lub npe tsis yog rau koj nyiam, sim lwm yam kom txog thaum koj pom ib qho uas ua haujlwm rau koj.