Cov neeg uas nkees ntawm kev siv ironing rau cov plaub hau ncaj, rov qab xav txog lub tswv yim ntawm ib zaug thiab rau txhua tus kom hloov cov plaub hau curly rau hauv cov xauv ncaj. Dab tsi yog txoj kev ntawm straightening? Qhov teeb meem ntawm kev xaiv yog qhov kev siv zog npaum li cas thiab lub sijhawm koj kam siv los hloov tus duab. Thiab, ntawm chav kawm, yam tseem ceeb ntawm cov txheej txheem kev ruaj ntseg, ntev thiab muaj zog ntawm kev tshwm sim los ntawm nws yog tsis tseem ceeb.
Cov plaub hau ncaj
Ntawm tag nrho cov hau kev ncaj ncaj tsis mloog lus, cov plaub hau ncaj ncaj yog ib qho ntawm txoj kev niaj hnub no, uas koj tsis nco qab txog cov plaub hau kom txog thaum uas cov ceg ntws rov qab tuaj. Ua kom muaj kev vam meej ruaj khov ntawm kev ncaj nceeg nrog kev pab los ntawm cov tshuaj muaj teebmeem rau ntawm cov qauv ntawm cov plaub hau tuaj yeem hauv lub tsev txias. Cob phum sawv ntsug yog hloov pauv ntawm cov plaub hau xwb. Namely - kev puas tsuaj ntawm disulfide bonds nyob rau hauv tus ntawm tshuaj tivthaiv nyob rau hauv qhov sib tov rau rectification. Nws yog lub npe hu hais tias cov qauv ntawm curling plaub hau muaj ib lub qij duab. Qhov me me qhov ntev ntawm lub qij ntawm cov plaub hau raj, tus plaub hau zoo nkaus li cov plaub hau. Qhov tseeb ncaj curls nyob rau hauv ib tug txiav - qhov no yog lub zoo meej lub voj voog. Lub hom phiaj ntawm cov tshuaj straightening - qhov no yog qhov kev ua tiav ntawm qhov tseeb tshaj ntawm daim qauv ntawm cov plaub hau ncej. Cov txheej txheem rau cov tshuaj plaub hau ncaj qha yog ua tiav raws li nram no:
- Rau ntawm cov tshuaj ntxuav plaub hau kom zoo, ib qho chaw yog thov rau cov tshuaj ntawm cov plaub hau. Lub sijhawm ntawm cov nyob tus yoojyim nyob ntawm lub thickness ntawm plaub hau. Qhov nruab nrab, qhov no yog 15-20 feeb.
- Tom qab ntxuav cov tshuaj sib tov ntawm cov strands, ib qho tshuaj tsuag yog siv thiab cov txheej txheem ironing yog nqa tawm. Lub caij ntawm ironing lub strands yog ib qho tseem ceeb. Nws yog tsim nyog los ua kom zoo zoo thiab ua tib zoo, yog li ntawd raws li kom tsis txhob puas cov plaub hau softened.
- Nyob rau lub qhov ncaj cov xauv khov kho. Nws ntxuav tawm tom qab 5 feeb tom qab thov.
- Tom qab ntawd cov plaub hau qhuav nrog ib lub tshuab ziab khaub ncaws.
Txhim kho cov nyhuv, cov plaub hau tom qab kho tsis tuaj yeem muab ntxuav rau 3 hnub. Tom qab ob peb hnub, tus tuav ntaub ntawv rov tuaj yeem rov mus thov dua.
Cov plaub hau tshuaj ncaj ncaj hauv tsev
Lub ntsiab ntawm cov tshuaj sib tov sib xyaw yog cov tshuaj sodium hydroxide los yog ammonium trioglycollate. Thawj cov tshuaj yog ntau nruj rau nws cov nyhuv. Nws yog siv los ncaj ncaj heev curly los yog heev zog cov plaub hau. Qhov thib ob tsis tshua zoo. Kev sib tov raws li ammonium trioglycolate yog tsim rau cov plaub hau thiab cov plaub hau muag. Li no, txhais tau tias cov tshuaj plaub hau ncaj qha yog ob hom. Tom qab qhov kev txiav txim siab coj tus txheej txheem tom tsev, koj yuav tsum ua tib zoo xaiv qhov sib xyaw kom haum. Yog tias ib qho kev ua raws li sodium hydroxide xaiv, nws yog ib qho tseem ceeb los xam cov nqi ntawm cov khoom. Qhov ntau xws li ib tug sib tov yog thov mus rau cov plaub hau, lub smoother lawv yuav tshwm sim raws li ib tug tshwm sim. Tab sis nws yog ib qho tseem ceeb kom nco ntsoov txoj kev pheej hmoo tias qhov kev tiv thaiv no ua rau nws tus kheej. Kom tsis txhob ua kom tsis raug mob (tom tsev, tsis muaj xim ntawm ib tus kws kho mob tshwj xeeb, ib qho tshuaj tua hluav taws puas tau), koj yuav tsum tau siv cov tshuaj nplaum rau saum tawv taub hau. Nws yog zoo dua yog tias nws yog lub ntuj tsim, piv txwv li, roj av jelly. Tus txheej txheem nws tus kheej yuav tsum tau nqa tawm nrog kev saib xyuas zoo. Tsis txhob hnov qab txog lub sij hawm ntawm cov tshuaj sib tov. Nws yuav tsum tsis txhob pub tshaj 10 feeb rau cov plaub hau me ntsis wavy, thiab 20 feeb rau hnyav curls.
Biochemical plaub hau ncaj
Qhov txhoj puab heev ntawm cov chem ntawm cov dej sib xyaw rau kev sib tw yuav zam tau los ntawm kev siv txoj kev softer txoj hau kev ncaj nraim rau cov plaub hau - biochemical rectification. Lub hauv paus ntawm kev txiav txim ntawm xws li ib tug composition yog yuav luag tib yam, tab sis nws lub Cheebtsam yog softer. Lawv tsis cuam tshuam rau saum tawv taub hau, tsis txhob hlawv nyias cov plaub hau. Cov khoom xyaw ntawm cov khoom xyaw biochemical muaj xws li cov roj thiab cov khoom txaj, ua kom cov plaub hau puas lawm. Vim los ntawm kev siv zoo li no, cov plaub hau tsis tsuas zoo tib yam, tab sis kuj yooj yim dua los tu.