Khoov kav dej yog feem ntau siv nyob rau hauv ob qho tib si lub neej txhua hnub thiab kev lag luam ntau lawm. Lawv muaj ntau yam kev siv, thiab nrog rau kev txhim kho txuas ntxiv ntawm khoov yeeb nkab ua tshuab hauv xyoo tas los no, qhov zoo ntawm cov khoom khoov yeeb nkab tau nce siab dua.
Txawm li cas los xij, txawm li cas los xij, tseem muaj qee qhov teeb meem tshwm sim hauv kev khoov yeeb nkab, thiab ib qho teeb meem tshwm sim yog wrinkles. Cov wrinkles ntawm cov yeeb nkab khoov yuav ua rau muaj kev cuam tshuam zoo rau kev ua haujlwm thiab kev siv cov khoom, yog li peb yuav tsum zam lawv kom ntau li ntau tau.
Ntawm chav kawm, txhawm rau kom tsis txhob muaj wrinkles thaum lub sij hawm khoov yeeb nkab, nws yog ib qho tsim nyog los txheeb xyuas qhov ua rau. Cia wb mus saib qhov xwm txheej tshwj xeeb. Piv txwv li, thaum peb tab tom ua cov yeeb nkab nrog txoj kab uas hla ntawm 8 millimeters, thaum peb teeb tsa cov yeeb nkab dabtsi yog khoov tshuab kom khoov 90 degrees thiab khoov lub vojvoog ntawm 30, vim tias tus yuam sij nws tus kheej nyias dhau, nws yooj yim kom muaj wrinkles ntau dua. tom qab ua tiav. Txawm hais tias peb xub khoov nws mus rau hauv ib lub vojvoog loj thiab ua rau nws mus rau hauv 30 lub vojvoog, peb tseem tsis tuaj yeem daws qhov teeb meem ntawm wrinkles ntau dua.
Nquag, yuav tsis muaj wrinkles nyob rau hauv txoj kev khoov, thiab cov laj thawj ntawm cov teeb meem yog vim tsis zoo ntawm cov pwm siv, tsis txaus qhov tseeb, los yog hnyav hnyav.
Tsis tas li ntawd, xaiv txoj kev khoov tsis ncaj ncees kuj tuaj yeem ua rau wrinkles hauv qhov khoov. Nws raug nquahu kom ua ntej thaiv ib qho kawg ntawm cov yeeb nkab haum, sau nws nrog xuab zeb, thiab tom qab ntawd thaiv lwm qhov kawg ua ntej ua, uas yuav txhim kho tau zoo.
Cov saum toj no yog qhov ua rau thiab kev tsom xam ntawm wrinkles nyob rau hauv cov yeeb nkab dabtsi yog khoov ua, vam tias yuav muab ib co kev pab rau feem ntau ntawm cov yeeb nkab dabtsi yog khoov cov neeg siv.