Ukuguqulelwa ngokoqobo kweempawu zendalo zolusu lulusu lwethu oluqhelekileyo. Ikhatshwa ngabantu ekuzalweni kwayo. Iqulethwe yimijelo yolusu engaguqukiyo kunye ne-skin crests, eziziipoligoni ezizinzileyo kwaye phantse azitshintshanga. Ukujonga ngokuthe ngqo kwesikhumba esingenanto, unokubona izinto eziyinkimbinkimbi, eziphazamisayo, kunye neenwele ezintle zombala onzima okanye okhanyayo. Nangona kunjalo, ngokuhamba kwexesha, abantu bayaqhubeka beguga, kwaye ulusu luguga ngokuthe ngcembe ngokwemvelo. Ngelo xesha, ulusu oluhlala luvezwa luya kubandezeleka kwakhona ngenxa yempembelelo yangaphandle njengongcoliseko lwendalo, kwaye luqhubeke nokulimala, kwaye izinga lomonakalo kwiiseli ze-stratum corneum ziya kutshintsha. Inani le-grooves yesikhumba kunye nemigca yesikhumba iyatshintsha, kwaye ukumila okuzinzileyo kubonakala kudibene, inani liyancipha, kwaye indawo ephezulu iyaqhubeka nokwandisa, ngoko ulusu luba lukhuni kwaye lube lukhuni.
Ngokuqhelekileyo, ngaphambi kweminyaka engama-25 ubudala, ubuso besikhumba bugudileyo, bukhanyayo, kwaye bulula. Emva koko, nangona kunjalo, ulusu luqala ukuguga ngokuthe ngcembe kwaye iimpawu ze-physiological zihlala zitshintsha.
1. Ukufuma kwesikhumba kunye nesithintelo solusu
Uninzi lwezophando malunga nolusu olubi lujolise kwimisebenzi ye-stratum corneum, njengomsebenzi wokukwazi ukugcina amanzi kunye nomsebenzi wokuthintela ulusu. Njengokufunda ukufuma, izinto zendalo zokuthambisa, kunye notshintsho lwelipid phakathi kweeseli ze-stratum corneum. Ukulahleka kobumanzi kuyingozi kakhulu, kubangela ukuba ulusu lube ne-matted kwaye lube neenkozo. Ukuchithwa kweeseli ze-epidermal kuphazamiseka, okukhokelela ekuvelisweni kwe-dandruff kunye nezikali. Ubumanzi bolusu bunxulumene ngokusondeleyo nokufuma, ukukhazimla kunye nokucoleka kolusu. I-stratum corneum egudileyo, enamanzi amaninzi ibonakalisa rhoqo ukudala ukukhanya okukhanyayo, ngelixa i-scaly, i-scaly stratum corneum ibonakalisa ngendlela engabonakaliyo eyenza ulusu lube ngwevu. Ngomswakama ophantsi kwesikhumba, ulusu luba lome kwaye lube lukhuni, kwaye ulusu lubuhlungu.
Ulusu olunokunciphisa umsebenzi wokuthintela lufana nesambrela ephukile. Amanzi e-endogenous ayipheli nje ngokulula, kodwa i-stimuli yangaphandle kulula ukuyihlasela, kwaye ukudumba kuqhelekile ukuba kwenzeke. Ezinje ngeengxaki zesikhumba ezinxulumene nokudumba: ukurhawuzelelwa, uburhabaxa, ukuxobuka, ukurhawuzelela, ububomvu, njl njl. Iingxaki zolusu eziphindaphindiweyo ezibangelwa kungekhona ngohlobo lwesikhumba kodwa ngenxa yokuvuvukala okungapheliyo ngaphakathi kwesikhumba.
I-epidermis ye-photoaging ibonise ukulungisa ukujiya xa umonakalo uncinci, kunye ne-atrophy xa umonakalo wawunzima. Iiseli ze-basal layer zatshintshwa yi-atypia ebonakalayo, kwaye kwakukho inani elikhulu leeseli ze-dyskeratotic.
2. I-dermis ilahlekelwa ukuqina kwayo
Uburhabaxa bolusu bunxulumene ngokusondeleyo nokunwebeka kwesikhumba. I-skin elasticity iyancipha, i-laxity yesikhumba okanye imibimbi ibonakala, kunye nokwanda kwesikhumba. I-Fibroblasts yiyona nto ibalulekileyo yeselula kwi-dermis yesikhumba kwaye idlala indima ebalulekileyo ekuhlanganiseni iifayili ze-secretory kunye ne-matrix engaphandle. Idlala indima ebalulekileyo ekulungiseni amanxeba ezicubu. Ngokukhula, ubukhulu bolusu buyancipha njengoko umxholo we-elastic fiber eluswini uyancipha ngokuthe ngcembe. Ukuguga kolusu kuvelele, okunokuthi kuqondwe njengolusu olomileyo nolurhabaxa, imibimbi eyandisiweyo kunye nenzulu, ulusu oluxekekileyo, kunye nokuncipha kwe-elasticity. Ubudala buhamba kunye nokuncipha komxholo weprotheyini yolusu, ukungabikho kokuqina kwesikhumba, kunye nokwanda kobunzulu besikhumba esikhokelela ekubonakaleni kwemibimbi.
Ngoko ngaphambi kokuba iingxaki zolusu zenziwe, sisenezinto ezininzi ekufuneka sizenze. Umzekelo, iuhlalutyi lwesikhumbainokusinceda sithobe okanye sisombulule iingxaki zolusu ukuya kuthi ga kwinqanaba elithile ngaphambi kokuba iingxaki zolusu zivele ngokupheleleyo!
Ixesha lokuposa: Oct-12-2022
