I-melanin, i-pigment ebangela umbala wesikhumba, izinwele, namehlo ethu, igxile embonini yobuhle nokunakekelwa komuntu siqu. Iqhaza layo ekuvikeleni isikhumba sethu emisebeni ye-UV eyingozi kanye namandla ayo ekuthuthukiseni izindlela zobuhle angeke iqiniswe ngokweqile. Kulo mhlahlandlela obanzi, sizohlola konke odinga ukukwazi mayelana ne-melanin, kusukela ezinzuzweni zayo kuya emikhiqizweni esezingeni eliphezulu equkethe.
Okuqukethwe:
- Iyini i-melanin?
- Ingabe i-melanin iyasebenza?
– Izinzuzo melanin
- Imiphumela emibi ye-melanin
- Isetshenziswa kanjani i-melanin
- Imikhiqizo esezingeni eliphezulu equkethe i-melanin
Iyini i-melanin?
I-Melanin i-pigment yemvelo etholakala ezintweni eziningi eziphilayo, ebangela umbala wesikhumba, izinwele, namehlo kubantu. Ikhiqizwe amangqamuzana aziwa ngokuthi ama-melanocyte, idlala indima ebalulekile ekuvikeleni isikhumba emisebeni ye-UV ngokumunca nokuhlakaza ukukhanya kwelanga. Kunezinhlobo ezimbili eziyinhloko ze-melanin: i-eumelanin, enikeza umbala onsundu noma omnyama, kanye ne-pheomelanin, ehlinzeka ngombala obomvu noma ophuzi. Ibhalansi phakathi kwalezi zinhlobo ezimbili inquma umbala wesikhumba somuntu, ngokugxila okuphezulu kwe-eumelanin okuholela esikhumbeni esimnyama.
Ingabe i-melanin iyasebenza?
Ukusebenza kwe-melanin njengesivikelo emonakalweni we-UV kubhalwe kahle. Ngokumunca imisebe ye-UV eyingozi, i-melanin ivimbela ukulimala kwe-DNA okungaholela ekubeni nomdlavuza wesikhumba futhi kusheshise ukuguga. Ngaphezu kwalokho, izakhiwo ze-melanin ze-antioxidant zilwa nama-radicals mahhala, zinciphisa ingcindezi ye-oxidative futhi zilondoloze impilo yesikhumba. Kodwa-ke, ukusebenza kahle kwemikhiqizo ehlobene ne-melanin kungahluka kuye ngokwakheka kwayo kanye nohlobo lwesikhumba somuntu. Kubalulekile ukuqaphela ukuthi nakuba i-melanin inikeza isivikelo esithile, ayithathi indawo yokuvikela ilanga.
Izinzuzo ze-melanin
I-Melanin inikeza izinzuzo eziningana empilweni yesikhumba nobuhle. Isici sayo esingokwemvelo sokuvikela ilanga sisiza ekuvimbeleni ukushiswa yilanga futhi sinciphisa ingozi yomdlavuza wesikhumba. Ukwengeza, isikhumba esicebile nge-melanin sivame ukuguga kahle, sinezimpawu ezimbalwa zokushwabana namabala elanga. Kulabo abafuna ukukhipha ithoni yesikhumba noma ukunciphisa ukubukeka kwezibazi, imikhiqizo ekhuthaza ukukhiqizwa kwe-melanin ingaba yinzuzo. Ngaphezu kwalokho, izakhiwo ze-melanin ze-antioxidant zisiza ekulweni nezingcindezi zemvelo, zigcine ukubukeka kwesikhumba kobusha.
Imiphumela emibi ye-melanin
Nakuba i-melanin ngokwayo ingokwemvelo futhi ngokuvamile iphephile, kungase kube nemiphumela engemihle ehambisana nemikhiqizo eklanyelwe ukushintsha amazinga e-melanin. Isibonelo, eminye imikhiqizo ehloselwe ukukhulisa ukukhiqizwa kwe-melanin ingase ibangele ukucasuka kwesikhumba noma ukungezwani komzimba kubantu abazwelayo. Ngokuphambene, imikhiqizo eyehlisa ukukhiqizwa kwe-melanin, njengezikhanyisi zesikhumba, ingaholela ekushintsheni kombala wesikhumba noma yandise ingozi yokulimala kwe-UV ngenxa yokunciphisa ukuvikela kwemvelo. Kubalulekile ukusebenzisa le mikhiqizo ngendlela oyalelwe ngayo futhi uthintane nodokotela wesikhumba uma kwenzeka noma yimiphi imiphumela emibi.
Ungayisebenzisa kanjani i-melanin
Ukufaka i-melanin ebuhleni bakho nasekunakekelweni kwakho komuntu siqu kungenziwa ngemikhiqizo ehlukahlukene, efana nokhilimu, ama-serum, nezithasiselo. Uma usebenzisa imikhiqizo eklanyelwe ukuthuthukisa ukukhiqizwa kwe-melanin, kubalulekile ukuthi uyigcobe ngokulinganayo endaweni oyifunayo futhi ulandelele i-sunscreen ukuvikela isikhumba. Emikhiqizweni ehloselwe ukwehlisa ukukhiqizwa kwe-melanin, njengezikhanyisi zesikhumba, ukusetshenziswa ngokucophelela ezindaweni okuqondiswe kuzo kubalulekile ukuze kugwenywe amathoni esikhumba angalingani. Hlola njalo imikhiqizo emisha futhi ulandele imiyalelo yomkhiqizi ukuze uthole imiphumela engcono kakhulu.
Imikhiqizo esezingeni eliphezulu equkethe i-melanin
Imakethe yobuhle nokunakekelwa komuntu siqu igcwele imikhiqizo eziqhayisa ngezinto ezithuthukisa i-melanin noma ezivikelayo. Izinto ezithandwayo zihlanganisa ama-serum akhulisa i-melanin athembisa ithoni yesikhumba elinganayo kanye nokukhanya okwandisiwe. Okhilimu abacebile nge-Antioxidant kanye nezithako ezihloselwe ukusekela ukukhiqizwa kwe-melanin yemvelo nokuvikela isikhumba ekulimaleni kwemvelo nakho kuyathandwa. Ukwengeza, imikhiqizo yokunakekelwa kwezinwele equkethe i-melanin ifunwa ngamandla abo okugcina umbala wezinwele nokuvimbela ukumpunga. Uma ukhetha imikhiqizo, bheka labo abanezithako zemvelo kanye nokubuyekezwa okuhle okuvela kubasebenzisi abanezinhlobo zesikhumba ezifanayo.
Isiphetho
I-melanin idlala indima ebalulekile empilweni nasekubukekeni kwesikhumba sethu, inikeza isivikelo esingokwemvelo emonakalweni we-UV futhi inikele ebuhleni bethu ngabanye. Ukuqonda ukuthi ungazisebenzisa kanjani izinzuzo ze-melanin ngokusebenzisa imikhiqizo ye-skincake efanele kungaholela esikhumbeni esinempilo, esicwebezelayo. Kungakhathaliseki ukuthi ufuna ukuthuthukisa ukukhiqizwa kwakho kwe-melanin noma ukuyivikela, kunenqwaba yezinketho ezitholakalayo emakethe yanamuhla. Khumbula ukuxhumana nodokotela wesikhumba ukuze uthole imikhiqizo engcono kakhulu ehlobene ne-melanin ngezidingo zakho ezithile, uqinisekise indlela yobuhle ephephile nephumelelayo.
