Ukusetyenziswa

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Ulusu lweoyile

Iziphumo zeoyile ezigqithileyo ezivela kumadlala afumileyo eluswini avelisa i-sebum. Abo banayo le meko bahlala benesikhumba esikhanyayo kunye neepore ezinkulu.

Imifanekiso ekhanyisiweyo ye-UV yokukhanya kunye nesiphumo semifanekiso efunyenweyo:

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Imibimbi

Imibimbi ziingceba, imiqulu, okanye imiphetho kulusu. Ngokubonakaliswa yimitha ye-ultraviolet, ukutyeba kolusu kuhlwempuzekile okanye i-elastin kunye ne-collagen ziyonakala, ezenza ulusu lome kwaye zikhokelele ekwandeni kwemibimbi. (IHyaluronan inendalo eyomeleleyo yokufunxa amanzi kwaye iyahamba ukuya kumaxesha amaninzi ukuba kugcinwa amanzi. Kwelinye icala, nangona kunjalo, ukuba amanzi alahlekile, ubuninzi bawo buyancipha ngomlinganiselo weengcambu ezikwisikwere, ingcambu yetyhubhu, emva koko umbimbi yenziwe ngokwendalo kulusu).

Imifanekiso yovavanyo ethathiweyo kunye nesiphumo semifanekiso efunyenweyo:

Luhlaza yimibimbi eyenziweyo, Mthubi yimibimbi eyenzeka kwangoko

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UKUSETYENZISWA KWIMBEWU

Ulusu lunokubonakala lumnyama xa i-melanin pigment iveliswa kakhulu okanye ilula xa iveliswe kancinci. Oku kubizwa ngokuba yi "pigmentation" kwaye kubangelwa yimitha ye-ultraviolet, usulelo lolusu okanye amanxeba.

Imifanekiso yovavanyo ethathiweyo kunye nesiphumo semifanekiso efunyenweyo:

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Indawo enzulu

Ukutshintsha kombala ngaphakathi nangaphantsi kolusu.

Xa ezi ndawo zivalwe ziinwele, ioyile kunye nemfihlo, i-sebum ifumba emva kwayo, ibangele ukuba kuvele amabala.

Imifanekiso yovavanyo ethathiweyo kunye nesiphumo semifanekiso efunyenweyo:

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IINDAWO EZIBOMVU

Ukusuka ekutshisweni lilanga ukuya kulwelwe, kukho iimeko ezininzi apho isikhumba sakho sinokuba bomvu okanye sicaphuke. Kungenxa yokuba igazi elongezelelekileyo ligijimela kulusu ukuze lukhusele ukucaphukisa kunye nokukhuthaza ukuphilisa. Ububomvu besikhumba bunokuvela nasekuzameni, nasemva kweseshoni yomzimba ebetha ngamandla.

Imifanekiso yovavanyo ethathiweyo kunye nesiphumo semifanekiso efunyenweyo:

Iindawo ezibomvu ziimpawu ezibuthathaka

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IPHEPHA

Ipore kukuvuleka okuncinci kumaleko esikhumba apho amadlala aqaqambileyo aveliswa yioyile yendalo yomzimba. Ubungakanani bepore bunokubonakala bukhulu xa; I-1) inani le-sebum kulusu olusemfihlakalweni olusuka kumadlala afihlakeleyo axhumene nefollicle yeenwele ayonyusa i-2) i-sebum kunye nobumdaka buxhonywe ngaphakathi kwipore, okanye i-3) udonga lwepore luye lwasarhwa kwaye lwolulwa kukuncipha kwe-elasticity ngenxa yokwaluphala kolusu.

Imifanekiso yovavanyo ethathiweyo kunye nesiphumo semifanekiso efunyenweyo:

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Ithoni Yolusu

Umbala wolusu lomntu ohlukileyo ukusuka kumbala omnyama kakhulu ukuya kweyona mibala ilula kunokubonakaliswa ngethoni yesikhumba kunye nesikali seFitzpatrick. Into ebalulekileyo yesikhumba ngumbala we-melanin. I-Melanin iveliswa kwiiseli ezibizwa ngokuba yi-melanocytes, kunye nolusu, kwaye yeyona nto iphambili kumbala wolusu. Ngapha koko, ulusu olumnyama luthanda ukuba neeseli ezinkulu ezenza i-melanin ezivelisa ngaphezulu, ezinkulu, ii-melanosomes ezixineneyo, xa kuthelekiswa nolusu olukhanyayo.

Ingxelo ibonisa kwisiphumo semifanekiso efunyenweyo: