I-Melanin, ibala lebala elibangela umbala wolusu, iinwele, kunye namehlo ethu, iye yaphambili kwishishini lobuhle nelokuzinyamekela. Indima yayo ekukhuseleni ulusu lwethu kwimitha ye-UV eyingozi kunye namandla ayo ekwandiseni iindlela zobuhle ayinakubaxa. Kwesi sikhokelo sibanzi, siza kuphonononga yonke into ofuna ukuyazi malunga ne-melanin, ukusuka kwizibonelelo zayo ukuya kwiimveliso eziphambili zefashoni eziquletheyo.
Isiqulatho:
– Yintoni melanin?
- Ngaba i-melanin isebenza?
– Iinzuzo melanin
-Iziphumo ebezingalindelekanga ze-melanin
Indlela yokusebenzisa i-melanin
-Iimveliso eziphambili zefashoni ezine melanin
Yintoni i-melanin?
I-Melanin sisibala sendalo esifumaneka kwizinto ezininzi eziphilayo, enoxanduva lombala wolusu, iinwele kunye namehlo ebantwini. Iveliswa ziiseli ezaziwa ngokuba ziimelanocytes, idlala indima ebalulekileyo ekukhuseleni ulusu kwimitha yeUV ngokufunxa nokusasaza ukukhanya kwelanga. Kukho iintlobo ezimbini eziphambili ze-melanin: i-eumelanin, enika umbala omdaka okanye omnyama, kunye ne-pheomelanin, enika umbala obomvu okanye ophuzi. Ulungelelwaniso phakathi kwezi ntlobo zimbini lumisela umbala wolusu lomntu, kunye nokugxila okuphezulu kwe-eumelanin okukhokelela kwithoni ezimnyama zesikhumba.
Ngaba i-melanin isebenza?
Ukusebenza kwe-melanin njenge-agent ekhuselayo kumonakalo we-UV kubhalwe kakuhle. Ngokufunxa imitha ye-UV eyingozi, i-melanin ikhusela umonakalo we-DNA onokukhokelela kumhlaza wolusu kwaye ikhawulezise ukuguga. Ngapha koko, iipropathi ze-melanin ze-antioxidant zilwa neeradicals zasimahla, zinciphisa uxinzelelo lwe-oxidative kunye nokugcina impilo yolusu. Nangona kunjalo, ukusebenza kweemveliso ezinxulumene ne-melanin kunokwahluka ngokuxhomekeke ekubunjweni kwazo kunye nohlobo lwesikhumba somntu. Kubalulekile ukuqaphela ukuba ngelixa i-melanin inika ukhuseleko oluthile, ayithathi indawo ye-sunscreen.
Iinzuzo ze-melanin
I-Melanin ibonelela ngeenzuzo ezininzi kwimpilo yolusu kunye nobuhle. Indalo yayo yokukhusela ilanga inceda ekuthinteleni ukutshiswa lilanga kwaye inciphisa umngcipheko womhlaza wolusu. Ukongeza, ulusu olutyebileyo lwe-melanin ludla ngokuguga ngakumbi, luneempawu ezimbalwa zokushwabana namabala elanga. Kwabo bafuna ukukhupha ithoni yesikhumba okanye ukunciphisa ukubonakala kweziva, iimveliso ezikhuthaza ukuveliswa kwe-melanin kunokuba luncedo. Ngaphezu koko, iipropathi ze-melanin ze-antioxidant zinceda ekulweni noxinzelelo lokusingqongileyo, ukugcina inkangeleko yolutsha yolusu.
Imiphumo emibi ye-melanin
Nangona i-melanin ngokwayo ingokwemvelo kwaye ikhuselekile ngokubanzi, kunokubakho iziphumo ezichaphazelekayo ezinxulumene neemveliso ezenzelwe ukuguqula amanqanaba e-melanin. Umzekelo, ezinye iimveliso ezijolise ekwandiseni imveliso ye-melanin zinokubangela ukucaphuka kwesikhumba okanye ukuchasana kwabantu ababuthathaka. Ngokuchaseneyo, iimveliso ezinciphisa ukuveliswa kwe-melanin, ezifana nezikhanyisi zolusu, zinokukhokelela kumbala wolusu okanye zonyuse umngcipheko womonakalo we-UV ngenxa yokuncipha kokhuseleko lwendalo. Kubalulekile ukusebenzisa ezi mveliso njengoko kuyalelwe kwaye udibane nogqirha wesikhumba ukuba kukho naziphi na iziphumo ezibi.
Indlela yokusebenzisa i-melanin
Ukubandakanya i-melanin kubuhle bakho kunye nendlela yokukhathalela umntu kunokwenziwa ngeemveliso ezahlukeneyo, ezinje ngeekhrimu, iiserum, kunye nezongezelelo. Xa usebenzisa iimveliso ezenzelwe ukomeleza imveliso yemelanin, kubalulekile ukuba uzigalele ngokulinganayo kwindawo oyifunayo kwaye ulandele i-sunscreen ukukhusela ulusu. Kwiimveliso ezijolise ekunciphiseni ukuveliswa kwe-melanin, ezifana nezikhanyisi zolusu, ukusetyenziswa ngononophelo kwiindawo ekujoliswe kuzo kubalulekile ukunqanda iitoni zesikhumba ezingalinganiyo. Hlala uvavanya iimveliso ezitsha kwaye ulandele imiyalelo yomenzi ngeziphumo ezilungileyo.
Iimveliso ezihamba phambili ezine-melanin
Imarike yobuhle kunye nokhathalelo lomntu inyakazela ngeemveliso eziqhayisa nge-melanin okanye iipropathi ezikhuselayo. Izinto eziqhelekileyo ziquka iiserum zokunyusa i-melanin ezithembisa ithoni ethe kratya yesikhumba kunye nokukhanya okwandisiweyo. I-Antioxidant-rich creams kunye nezongezelelo ezijoliswe ekuxhaseni ukuveliswa kwe-melanin yendalo kunye nokukhusela ulusu kumonakalo wokusingqongileyo nazo zithandwa. Ukongeza, iimveliso zokhathalelo lweenwele ezine-melanin zifunwa ngamandla abo okugcina umbala weenwele kunye nokuthintela ukuba ngwevu. Xa ukhetha iimveliso, khangela ezo zinezithako zendalo kunye nophononongo oluhle oluvela kubasebenzisi abaneentlobo zesikhumba ezifanayo.
isiphelo
I-Melanin idlala indima ebalulekileyo kwimpilo yolusu lwethu kunye nenkangeleko, ibonelela ngokhuseleko lwendalo kumonakalo we-UV kwaye inegalelo kubuhle bethu ngabanye. Ukuqonda indlela yokusebenzisa izibonelelo ze-melanin ngokusebenzisa iimveliso zokhathalelo olululo kunokukhokelela ekubeni ulusu olusempilweni, olukhazimlayo ngakumbi. Nokuba ujonge ukonyusa imveliso yakho ye-melanin okanye uyikhusele, kukho intaphane yezinto onokukhetha kuzo ezifumanekayo kwimarike yanamhlanje. Khumbula ukudibana ne-dermatologist ukufumana ezona mveliso zibalaseleyo ezinxulumene ne-melanin kwiimfuno zakho ezithile, uqinisekise indlela yobuhle ekhuselekileyo nesebenzayo.
