Tsawg-viscosity dimethyl polydimethylsiloxane (PDMS) - Tshuaj pleev ib ce- qib silicone roj
Cias muab tso, qhov no yog ib qho purified heev, qis -molecular- hnyav silicone roj haum rau cov tshuaj pleev ib ce thiab cov khoom tu tus kheej. Nws yog ib qho "smoothing agent" hauv ntau cov khoom tu tawv nqaij, pleev, thiab cov khoom tu plaub hau.
Nws yog dab tsi? Basic txhais
Lub npe tshuaj: Dimethylpolydimethylsiloxane. Lub npe no piav qhia txog nws cov qauv-ib pob txha uas muaj silicon thiab oxygen atoms (polydimethylsiloxane), nrog methyl (-CH₃) pawg txuas nrog.
Hom Lub Npe: Dimethicone, Dimethicone (INCI lub npe).
Cov tsos mob: Feem ntau yog pob tshab, tsis muaj ntxhiab, tsis muaj xim oily kua.
Viscosity: "Low viscosity" yog hais txog nws cov dej ntws tsawg heev, zoo ib yam li dej. Viscosity feem ntau yog ntsuas hauv centistokes (cSt), thiab qhov viscosity ntau ntawm qis -viscosity PDMS feem ntau yog nyob nruab nrab ntawm 0.65 cSt thiab 100 cSt (piv txwv li, 10 cSt yog qib ntau heev).
Cov yam ntxwv tseem ceeb thiab qhov zoo
Tsawg-Viscosity PDMS tau txais txiaj ntsig zoo vim nws lub cev thiab tshuaj lom neeg tshwj xeeb:
Zoo heev Spreadability thiab refreshing xav:
Nws kis tau sai rau ntawm daim tawv nqaij lossis plaub hau, ua rau nyias nyias, txawm tias, tsis yog - greasy zaj duab xis. Cov yeeb yaj kiab no muab cov kev xav zoo nkauj yam tsis muaj qhov occlusive thiab hnyav ntawm qee cov roj ntxhia.
Smoothing thiab Softening:
Nws tsim ib qho instant smoothing nyhuv los ntawm sau nyob rau hauv me me kev nyuaj siab thiab wrinkles ntawm daim tawv nqaij saum npoo, uas ua rau ib tug heev mos xav. Qhov no ua rau nws muaj qhov zoo tshaj plaws nyob rau hauv primers, foundations, thiab cream, tso cai rau tom qab pleev kom zoo dua.
Hydrophobicity thiab tiv thaiv Barrier:
Nws yog insoluble nyob rau hauv dej, tsim ib tug zoo waterproof barrier. Qhov no pab tiv thaiv daim tawv nqaij los ntawm kev ua xua rau sab nraud (xws li cua thiab cua qhuav) thiab tiv thaiv kom tsis txhob ya raws ntau dhau, yog li muab cov nyhuv moisturizing.
Chemically Inert thiab Mild:
Nws yog qhov ruaj khov heev, tsis tuaj yeem cuam tshuam nrog lwm cov khoom xyaw, ruaj khov rau lub teeb thiab oxygen, thiab txuas ntxiv cov khoom txee lub neej.
Tshuaj pleev ib ce- qib txhais tau hais tias nws tau dhau los ua kom huv huv, tsis yog - khaus thiab hypoallergenic, thiab haum rau cov tawv nqaij rhiab heev.
Txhim kho cov khoom zoo nkauj thiab ruaj khov:
Nyob rau hauv formulations, nws txo greasiness thiab tsub kom cov khoom smoothness.
Nws pab kom ruaj khov dej- hauv- roj (W/O) emulsions thiab tiv thaiv cov xim (hauv lub hauv paus thiab pleev) los ntawm clumping thiab nyob.
Shimmer:
Nws muab cov plaub hau thiab tawv nqaij noj qab nyob zoo, ntuj ci tsis ua rau lawv tshwm oily.
Cov ntawv thov hauv Cosmetic
Tsawg-viscosity PDMS muaj cov ntawv thov dav heev, npog yuav luag txhua pawg:
Cov khoom siv tawv nqaij:
Creams thiab Lotions: Muab hydration thiab ib tug txhob lo lo ntxhuav.
Serums: Txhim khu kev nkag mus thiab smoothness.
Cov khoom siv tshuaj pleev thaiv hnub: Txhim kho kev sib kis, ua cov tshuaj pleev thaiv hnub ntau dua thiab txhim kho dej thiab tawm hws.
Makeup Primers: Sau cov pores thiab cov kab zoo, tsim kom muaj ib daim ntaub du rau cov pleev tom qab.
Cov khoom pleev xim:
Foundation/BB Cream: Ua kom yooj yim rau kev thov, ua rau muaj kev sib tw ntau dua thiab ntev - ua kom tiav.
Concealer: Txhim kho smoothness thiab kis tau.
Lipsticks thiab di ncauj Glosses: Ua kom ci thiab xis nyob, txo cov nplaum.
Cov khoom siv tu plaub hau:
Shampoos/Conditioners: Muab instant smoothness thiab txo frizz.
Lub ntsej muag plaub hau thiab cov plaub hau roj: Tsim cov yeeb yaj kiab tiv thaiv ntawm cov plaub hau, tiv thaiv kev puas tsuaj los ntawm tshav kub thiab nce ci.
Styling Products: Muab tuav tsis ntxiv qhov hnyav, ua kom cov plaub hau lub teeb thiab airy.
Cov khoom siv tu cev:
Da Dej Gel thiab Facial Cleanser: Tso cov zaj duab xis tiv thaiv ntawm daim tawv nqaij tom qab ntxuav, tiv thaiv kom nruj thiab qhuav tom qab ntxuav (qhov no yog "dej- khaws roj" thev naus laus zis).
Kev nyab xeeb thiab kev tsis sib haum xeeb
Silicone roj (tshwj xeeb tshaj yog dimethicone) tau muaj kev tsis sib haum xeeb hauv kev lag luam tshuaj pleev ib ce, tab sis kev tshawb fawb thiab kev tswj xyuas cov lus xaus meej meej:
Nws puas ua pob txuv?
Lub vaj huam sib luag Cosmetic Ingredient Review (CIR) hauv Tebchaws Meskas tau xaus lus tias dimethicone muaj kev nyab xeeb rau kev siv tshuaj pleev ib ce.
Nws yog ib yam khoom uas tsis yog -comedogenic. Nws cov qauv molecular loj tiv thaiv nws los ntawm kev nkag mus rau hauv lub qhov hws, es tsis txhob tsim cov txheej txheem tiv thaiv ntawm daim tawv nqaij kom tiv thaiv kom tsis txhob ya raws thiab sab nraud irritants. Rau ntau tus neeg, nws yuav tsis ua pob txuv lossis pob ntxau. Tsuas yog qee tus neeg tsawg heev ntawm cov neeg muaj kev cuam tshuam tshwj xeeb tuaj yeem ntsib cov kev tsis zoo.
Nws puas clog pores?
Ib yam li ntawd, vim nws loj molecular loj thiab inertness, nws tsis "clog" pores. Nws tsim ib zaj duab xis breathable.
Puas tsim kev puas tsuaj rau ib puag ncig?
Tam sim no qhov no yog qhov teeb meem nyuaj dua. PDMS nws thiaj li decomposes rau hauv silica, carbon dioxide, thiab dej hauv ib puag ncig. Nws txoj hmoo ib puag ncig nyob ntawm tej yam mob thiab txoj kev kho mob. Qhov ntau npaum li cas siv hauv cov tshuaj pleev ib ce yog me me, thiab nws raug kho los ntawm kev kho dej khib nyiab; Tam sim no, ib puag ncig kev pheej hmoo yog suav tias yog tswj tau. Kev tshawb fawb ntsig txog tseem tab tom ua.
Common Misconceptions and the Truth
Kev ntseeg yuam kev: "Silicon- muaj cov khoom ua rau tawg thiab tsis zoo rau daim tawv nqaij."
Qhov tseeb: Rau feem coob ntawm cov neeg, cov roj silicone muaj kev nyab xeeb, maj mam, thiab muaj txiaj ntsig zoo. Nws tsim cov tawv nqaij zoo dua xav tias lwm cov roj tsis tuaj yeem rov ua dua. Yog li-hu ua "breakouts" feem ntau tshwm sim los ntawm lwm yam (xws li roj hnyav, waxes, kev ntxuav tus kheej tsis zoo, lossis hom tawv nqaij ntawm tus kheej).
Kev ntseeg yuam kev: "Silicon roj tsuas yog coated rau saum npoo thiab tsis muaj txiaj ntsig tiag tiag rau daim tawv nqaij."
Qhov tseeb: Thaum nws tsis ncaj qha "nourish" ntawm daim tawv nqaij, cov yeeb yaj kiab tiv thaiv nws ua rau ntawm daim tawv nqaij nws tus kheej yog qhov tseem ceeb heev ntawm kev tu tawv nqaij ua haujlwm - ntxiv dag zog rau daim tawv nqaij barrier. Qhov no yog ib qho tseem ceeb rau moisturizing thiab tiv thaiv irritation.
Tsawg-viscosity dimethyldimethylsiloxane (cov tshuaj pleev ib ce- qib silicone roj) yog ib qho kev nyab xeeb, muaj txiaj ntsig zoo, thiab muaj ntau yam khoom siv hauv cov khoom siv tshuaj pleev ib ce niaj hnub no. Nws txhim kho cov neeg siv kev paub dhau los thiab kev ua tau zoo ntawm cov khoom los ntawm kev muab cov kev xav zoo nkauj zoo nkauj, ua kom zoo dua qub thiab tsis yog -greasy texture, zoo tshaj plaws kis tau tus mob, thiab kev tiv thaiv zoo.
Yog tias koj pom "Dimethicone" nyob rau hauv cov khoom xyaw, thiab koj tsis yog ib tug ntawm ob peb tus neeg uas rhiab heev rau nws, koj yuav tau so assured tias nws yuav ua rau koj cov khoom tu tawv nqaij smoother, koj pleev ntau adherent, thiab koj cov plaub hau shinier.
