Abantu emhlabeni bathanda ukuqabulwa kwelanga okuhle, u-J. Lo, uhlobo lwe-back-from-a-cruise olukhazimulayo njengokungathi umuntu olandelayo—kodwa asikuthandi ngempela umonakalo welanga ohambisana nalokhu ukuzuza lokhu kukhanya. Faka ubuhle bomshuki omuhle. Noma ngabe iphuma ebhodleleni noma isifutho sangaphakathi esaluni, ungaqiniseka kakhulu ukuthi ifomula iqukethe i-dihydroxyacetone. Igama ngokuqinisekile liwumlomo, yingakho i-dihydroxyacetone ngokuvamile ihamba nge-DHA.
I-DHA ngandlela-thile iyi-unicorn emhlabeni wesithako sobuhle ngokuthi, eyodwa, itholakala kuphela esigabeni esisodwa semikhiqizo, futhi okwesibili, iyona kuphela isithako esingenza lokho ekwenzayo. Qhubeka ufunde ukuze ufunde kahle ukuthi leyo faux tan iba khona kanjani.
I-DIHYDROXYACETONE
UHLOBO LWESITHATHU: Ushukela
IZINZUZO EZINKULU: Ibangela ukusabela kwamakhemikhali esikhumbeni okwenza amangqamuzana abe mnyama ukuze abe mnyama.1
UBANI OKUFANELE AWUYISEBENZISE: Noma ubani ofuna ukugqama ngaphandle kokulimala kwelanga. I-DHA ngokuvamile ibekezelelwa kahle iningi, nakuba ngezinye izikhathi ingabangela i-dermatitis yokuxhumana, kusho u-Farber.
UNGAYISEBENZISA KANGAKANANI: Umthelela wokuba mnyama we-DHA ukhula phakathi namahora angama-24 futhi uhlala iviki, ngokwesilinganiso.
ISEBENZA KAHLE NAKHO: Izithako eziningi zokufaka amanzi, ezivame ukuhlanganiswa ne-DHA emikhiqizweni yokuzishukela, ikakhulukazi izinto zokuthambisa kanye namaserum, kusho uFarber.
UNGASEBENZISI NATHI: I-Alpha hydroxy acids isheshisa ukuwohloka kwe-DHA; kuyilapho ziyindlela enhle yokususa ukubomvu kwakho uma usulungile, ungazisebenzisi uma usebenzisa ukuzishukela.
Iyini i-Dihydroxyacetone?
“I-Dihydroxyacetone, noma i-DHA njengoba kuvame ukubizwa ngayo, iyinhlanganisela kashukela engenambala esetshenziswa kubantu abaningi abazigcobayo,” kusho uMitchell. Ingatholakala ngokwenziwa noma ithathwe kushukela olula otholakala kuma-beet ashukela noma umoba. Isexwayiso seqiniso elijabulisayo: Yisona kuphela isithako esigunyazwe i-FDA njengomshuki wesikhumba, wengeza u-Lam-Phaure. Uma kuziwa emikhiqizweni yobuhle, uzoyithola kuphela kuma-self-tanners, nakuba ngezinye izikhathi ibuye isetshenziswe ngesikhathi sokwenza iwayini, kuphawula uMitchell.
Isebenza kanjani i-Dihydroxyacetone
Njengoba kushiwo, umsebenzi oyinhloko we-DHA (funda: kuphela) uwukudala ukufiphala kwesikhashana kwesikhumba. Ikwenza kanjani lokhu? Isikhathi sokuba mnandi futhi sibe nerdy umzuzwana, ngoba konke kuncike ekuphenduleni kwe-Maillard. Uma leli gama lizwakala lijwayelekile, kungenzeka ukuthi ulizwile ekilasini lamakhemikhali esikole samabanga aphezulu, noma ngenkathi ubuka i-Food Network. Yebo, Inethiwekhi Yokudla. “I-Maillard reaction iwumphumela wamakhemikhali owaziwa nangokuthi i-non-enzymatic browning—yingakho inyama ebomvu iba nsundu uma ipheka,” kuchaza uLam-Phaure.
Siyazi, kuyamangaza ukuqhathanisa i-steak ecwebezelayo nomshuki wezikhumba, kodwa sizwe. Ngokuphathelene nesikhumba, ukusabela kwe-Maillard kwenzeka lapho i-DHA ihlangana nama-amino acid kumaprotheni amangqamuzana esikhumba, okubangela ukukhiqizwa kwama-melanoid, noma ama-pigment ansundu, kuchaza uLam-Phaure.1 Lokhu, futhi, kudala ukushukwa. ukubukeka.
Kuyaphawuleka ukuthi lokhu kusabela kwenzeka kuphela ku-epidermis, ungqimba olungaphezulu lwesikhumba, yingakho umshuki engahlali unomphela.1 Lapho lawo mangqamuzana abashukiwe esehlile, ukubukeka okumnyama kuyanyamalala. (Kungakho futhi ukukhishwa kwesikhumba kuyisihluthulelo sokususa i-DHA; okwengeziwe ngalokho maduzane.)
FAQ
Ingabe i-DHA Iphephile Esikhumba?
I-Dihydroxyacetone, noma i-DHA, ivunyiwe emikhiqizweni yokuzishisa izikhumba kokubili yi-FDA kanye neKomidi Lezesayensi Le-EU Lokuphepha Kwabathengi.3 Ngo-2010, inhlangano yokugcina yathi ekugxilweni okufika kumaphesenti angu-10, i-DHA ayifaki ingozi empilweni yomthengi.4 Qaphela ukuthi i-FDA igcizelela ukubaluleka kokungavumeli i-DHA eduze nezindebe zakho, amehlo, nanoma yiziphi ezinye izindawo ezimbozwe ulwelwesi lwamafinyila.5
Ingabe i-DHA Iyingozi?
Yize i-FDA ikugunyazile ukusetshenziswa kwesihloko se-DHA kuzishuki ezizishuthekayo kanye nama-bronzer, isithako asivunyelwe ukungeniswa—futhi kungase kube lula ukugwinya i-DHA uma amehlo akho nomlomo kungambozwanga kahle endaweni yokushukwa kwesifutho.5 Ngakho-ke uma unquma ukufuthwa uchwepheshe, qiniseka ukuthi uthola ukuvikeleka okwanele.
Isikhathi sokuthumela: May-20-2022