Abantu bo ku isi bakunda J. Lo, urimo gukaraba nk'izuba, uhita usoma nk'uko bigenda ku muntu ukurikira — ariko ntabwo dukunda ingaruka z'izuba zijyana no kubona uyu mucyo. Injira mu bwiza bw'umuntu ukora isuku. Byaba ari mu icupa cyangwa spray yo muri salon, ushobora kwemeza neza ko iyi formula irimo dihydroxyacetone. Izina ni ryiza cyane, niyo mpamvu dihydroxyacetone ikunze kwitwa DHA.
DHA ni nk'iy'inyange mu isi y'ibintu by'ubwiza kuko, kimwe, kiboneka mu cyiciro kimwe cy'ibicuruzwa, naho icya kabiri, ni cyo kintu cyonyine gishobora gukora ibyo ikora. Komeza usome kugira ngo umenye neza uko iryo tara ry'inyange ryabayeho.
DIHYDROXYACETONE
UBWOKO BW'IKIGIZE: Isukari
IBYIZA BY'INGENZI: Bitera imiterere y'ibinyabutabire mu ruhu bigatuma uturemangingo twijima kugira ngo tugire isura y'umuhondo.1
NINDE UKWIYE KUYIKORESHA: Umuntu wese ushaka isura y'umuhondo idakomeretse ku zuba. DHA muri rusange yihanganirwa na benshi, nubwo rimwe na rimwe ishobora gutera dermatitis yo mu bwoko bwa contact, nk'uko Farber abivuga.
INGANO USHOBORA KUYIKORESHA: Ingaruka mbi za DHA zigaragara mu masaha 24 kandi zimara icyumweru kimwe, ugereranije.
IKORANA NEZA NA: Ibintu byinshi bifasha umuntu kumererwa neza, akenshi bivangwa na DHA mu bikoresho bihindura uruhu, cyane cyane ibinyabutabire n'ibinyabutabire, nk'uko Farber abivuga.
NTUKORESHE NA: Aside hydroxy ya Alpha yihutisha gusenyuka kwa DHA; nubwo ari uburyo bwiza bwo gukuraho ibara ry'uruhu rwawe umaze kwitegura, ntukayikoreshe mugihe ukoresha self-tanner.
Dihydroxyacetone ni iki?
“Dihydroxyacetone, cyangwa DHA nk'uko ikunze kuvugwa cyane, ni isukari idafite ibara ikoreshwa mu mashini nyinshi zikora isuku,” Mitchell agira ati: “Ishobora gukomoka mu buryo bwa sintetike cyangwa igakomoka ku isukari yoroshye iboneka muri beterave cyangwa ibisheke. Icyitonderwa: Ni cyo kintu cyonyine cyemewe na FDA nk'umuti wikora isuku, nk'uko Lam-Phaure yongeraho. Ku bijyanye n'ibicuruzwa by'ubwiza, uzabibona gusa mu mashini zikora isuku, nubwo rimwe na rimwe ikoreshwa mu gihe cyo gukora divayi, nk'uko Mitchell abivuga.
Uburyo Dihydroxyacetone Ikora
Nkuko byavuzwe, imikorere y'ingenzi ya DHA (soma gusa) ni ugutuma uruhu ruhinduka ubwirabura by'agateganyo. Ibikora ite? Igihe cyo kugira ubwiza n'ubuhanga mu kanya gato, kuko byose bishingiye ku buryo Maillard ikora. Niba iryo jambo rizwi neza, birashoboka ko ari uko ushobora kuba wararibyumvise mu ishuri rya chimie ryo mu mashuri yisumbuye, cyangwa igihe warebaga Food Network. Yego, Food Network. “Uburyo bwa Maillard ni uburyo bwa chimique buzwi kandi nka non-enzyme browning—niyo mpamvu inyama zitukura zihinduka ibara iyo zitetse,” Lam-Phaure asobanura.
Turabizi, biratangaje gato kugereranya inyama ishyushye n'iy'inyama ikoze mu ruhu, ariko tega amatwi. Ku bijyanye n'uruhu, Maillard reaction ibaho iyo DHA ikoranye na aside amine muri poroteyine zo mu turemangingo tw'uruhu, bigatuma habaho melanoids, cyangwa ibara ry'umukara, nk'uko Lam-Phaure abisobanura.1 Ibi, nabyo bituma umuntu asa n'ufite ibara ry'umukara.
Byagombye kuvugwa ko iyi mikorere ibaho gusa mu gice cyo hejuru cy'uruhu, ari na cyo gituma uruhu rworoshye rudakora burundu.1 Iyo utwo turemangingo tw'uruhu dutangiye gucika, isura y'umwijima irashira. (Niyo mpamvu kandi gusohora ibara ari ingenzi mu gukuraho DHA; byinshi kuri byo mu kanya gato.)
Ibibazo Bikunze Kubazwa
Ese DHA ni nziza ku ruhu?
Dihydroxyacetone, cyangwa DHA, yemejwe mu bicuruzwa byisiga ibara ry’uruhu na FDA ndetse na Komite y’Ubumwe bw’u Burayi ishinzwe umutekano w’abaguzi.3 Mu 2010, uyu muryango wa nyuma wavuze ko mu bipimo bigera kuri 10 ku ijana, DHA nta kibazo itera ku buzima bw’abaguzi.4 Menya ko FDA ishimangira akamaro ko kudashyira DHA hafi y’iminwa yawe, amaso yawe, cyangwa ahandi hantu hose hatwikiriwe n’udusimba.5
Ese DHA ni mbi?
Nubwo FDA yemeje ko DHA ikoreshwa mu kwisiga mu mashini zikora ibara ry’umuhondo n’izikoresha ibara ry’umuhondo, icyo kintu nticyemewe kunyobwa—kandi bishobora koroha kuyinywa mu gihe amaso n’umunwa bitapfundikiye neza mu cyumba cyo kwisiga ibara ry’umuhondo.5 Niba rero uhisemo kwisiga ibara ry’umuhondo n’umuhanga, menya neza ko ufite uburinzi buhagije.
Igihe cyo kohereza: Gicurasi-20-2022