Esimisweni esiyinkimbinkimbi semikhiqizo yamakhemikhali yokunakekelwa kwezinwele, ingxenye ngayinye inomsebenzi othize futhi isebenza ndawonye ukuze kufezwe isitayela kanye nomphumela wombala ofanele.I-Glyceryl monothioglycolate(CAS 30618-84-9), njenge-ejenti ebalulekile yokunciphisa i-asidi, nakuba ingeyona ingxenye eyinhloko yokudaya izinwele ngqo kanye nombala, idlala indima ebalulekile enkambisweni yokudaya izinwele. Izakhiwo zayo eziyingqayizivele zamakhemikhali zinikeza ukwesekwa okubalulekile kokuthuthukisa umphumela wokudaya izinwele kanye nokunciphisa umonakalo wezinwele.
I. Izici Zezingxenye: I-ejenti yokunciphisa kancane ezindaweni ezine-asidi
Ukuze uqonde indima ye-glyceryl monothioglycolate ekudayini izinwele, kubalulekile kuqala ukucacisa izakhiwo zayo eziyinhloko zamakhemikhali. Lesi sakhi singesomndeni we-thiol compound. Iqembu le-thiol (-SH) eliqukethwe esakhiweni salo sama-molecule linomsebenzi oqinile wokunciphisa, kuyilapho iqembu le-glyceride liyinika ukuncibilika kwamanzi okuhle kanye nokuhambisana kwesikhumba. Uma kuqhathaniswa nama-alkaline reduction agents endabuko, inzuzo enkulu ye-glyceryl monothioglycolate isebangeni layo le-pH elibuthakathaka (ngokuvamile 3.0-4.0). Lesi sici siyenza ikwazi ukwenza imiphumela yokunciphisa ngenkathi igwema umonakalo omkhulu kuma-cuticle ezinwele okubangelwa yizingxenye ze-alkaline kakhulu. Beka isisekelo "sokwelashwa okumnene" kwenqubo elandelayo yokudaya izinwele.
Ngokuphathelene nokuzinza,i-glyceryl monothioglycolateAyiboli kalula ezinhlelweni ze-asidi futhi ingagcina umsebenzi wayo wokunciphisa isikhathi eside. Lesi sici siyenza ifaneleke ukusebenza ngokubambisana nama-molecule e-pigment, ama-buffers nezinye izingxenye ezidayini zezinwele ukuze kwakheke amafomula omkhiqizo wokunakekelwa kwezinwele ozinzile. Okwamanje, isakhiwo sayo se-glyceride singakha nefilimu evikelayo ebusweni bezinwele, sinciphise umonakalo wesakhiwo sangaphakathi se-keratin sezinwele esibangelwa ukwelashwa kwamakhemikhali okulandelayo, okuhlinzeka ngesisombululo sokwelapha esinobungane sokudaya izinwele ezonakele noma izinwele ezincane nezithambile.
II. Indima eyinhloko ekudayini izinwele: Vula “iziteshi” futhi uthuthukise ukuqina kwemibala
Ingqikithi yenqubo yokudaya izinwele ukungena nokuqina kwama-molecule e-pigment ngaphakathi kwezinwele. Kodwa-ke, izithiyo zemvelo zezinwele - ama-cuticle nezakhiwo ze-keratin - zivimbela ngqo ukungena kwama-molecule e-pigment. Umsebenzi oyinhloko we-glyceryl monomercaptoacetate ukuphula lesi sithiyo ngokusebenzisa ukusabela kwamakhemikhali kanye "nokuvula iziteshi" zama-molecule e-pigment.
1. Phula izibopho ze-disulfide bese uthambisa isakhiwo sezinwele
Amandla nokuqina kwezinwele kuncike kakhulu ezibophweni ze-disulfide (-SS-) phakathi kwama-molecule e-keratin. Iqembu le-thiol (-SH) ku-Glyceryl monothioglycolate lingasabela ngezibopho ze-disulfide, lizinciphise zibe amaqembu amabili e-thiol (-SH + -SS- → -SS- + -SH), ngaleyo ndlela linqamule ukuxhumana phakathi kwe-keratin. Le nqubo yenza isakhiwo sezinwele sibe mnene futhi sithambile, ama-cuticle avuleka kancane kancane, futhi isikhala sangaphakathi sezinwele esiqinile siyakhululwa, okudala izimo zokungena kwama-molecule e-pigment kudayi wezinwele.
Uma kuqhathaniswa ne-mercaptoacetic acid esetshenziswa kuma-alkaline hair perming agents, indawo ene-acid ebuthakathaka ye-glyceryl monothioglycolate ingalawula ngokunembile izinga lokuphuka kwe-disulfide bond, igweme umonakalo omkhulu oholela ezinweleni eziqhekeka kalula neziqhekeka kalula. Idatha yokuhlola ikhombisa ukuthi ngaphansi kwesikhathi esifanayo sokucubungula, lapho kusetshenziswa i-ejenti yokwelapha equkethe le ngxenye, izinga lokuphuka kwezibopho ze-disulfide ezinweleni lingalawulwa ku-30%-40%, okungagcini nje ngokuhlangabezana nezidingo zokungena kwe-pigment kodwa futhi nokugcina amandla angaphezu kuka-70% ezinwele.
2. Lungiselela ukulungiswa kombala ukuze wandise isikhathi sokudaya izinwele
Lapho ama-cuticle evuleka futhi isakhiwo sezinwele sithamba, ama-molecule e-pigment kudayi wezinwele (njengezinto eziphakathi kwamadayi a-oxidized kanye nama-molecule amancane e-pigment ama-direct dyes) angangena ungqimba lwe-cortex yezinwele ngokushelela kakhudlwana. Indawo ene-acid ebuthakathaka ye-glyceryl monothioglycolate ingalawula nesimo sokushaja kwangaphakathi kwezinwele - izinwele zizoba nokushaja okuhle ngaphansi kwezimo ze-acidic, zakha ukukhanga kwe-electrostatic ngama-molecule e-pigment ashaja kabi, okusiza ama-molecule e-pigment ukuba anamathele ngokuqinile ku-keratin futhi anciphise ukulahleka kwe-pigment ngesikhathi senqubo yokuwasha.
Ezisetshenzisweni ezisebenzayo, ukuqina kwemiphumela yokudaya izinwele kungandiswa ngo-20% kuya ku-30% ngemva kokwelashwa nge-ejenti yangaphambi kokwelashwa equkethei-glyceryl monothioglycolateIsibonelo, isikhathi sokuphela kombala wezinwele ezivamile ezidayini ezincane nezithambile cishe singamaviki angu-4 kuya kwangu-6. Kodwa-ke, ngemva kokwelashwa ngalesi sithako, isikhathi sokuphela kombala singandiswa sibe amasonto angu-6 kuya kwangu-8, futhi ukugcwala kombala kuba okufanayo, kugweme izinkinga ezifana nokuphela kwezinwele kanye nokwehluka okukhulu kombala omusha ezimpandeni zezinwele.
III. Izimo Zokusebenza Ezisebenzayo: Kugxilwe kakhulu enkambisweni "yoku-ayina nokudaya okuhlanganisiwe"
Nakuba i-glyceryl monothioglycolate ingasiza ekudayini izinwele, ayifakwa ngqo kudayi wezinwele kodwa ivame ukutholakala kuma-perming agents (ikakhulukazi imikhiqizo ye-acidic perming) noma kuma-hair pretreatment agents, okwakha inhlanganisela "ehambisanayo" nenqubo yokudayini izinwele. Izimo ezivamile zokusetshenziswa zifaka phakathi izigaba ezimbili ezilandelayo:
1. Uhlelo lokuvikela izinwele ezonakele “i-perm kuqala, bese kuba udayi”
Ezinweleni ezonakele ezibangelwa ukugoba nokudaya njalo, inqubo yendabuko "yokugoba kuqala bese kuba ukudaya" ivame ukubangela ukuthi izinwele zilahlekelwe ukuqina kwazo ngokuphelele ngenxa yomonakalo wamakhemikhali amabili. Kuleli qophelo, i-ejenti yokugoba izinwele ene-acidic equkethe i-glyceryl monothioglycolate iba yinto ebalulekile: indawo yayo ene-acidic ebuthakathaka inganciphisa umonakalo kuma-cuticle ngesikhathi senqubo yokugoba, ngenkathi iphula kancane izibopho ze-disulfide, ivumela izinwele ukuthi zakhe isitayela esigoqekile ngenkathi igcina izinga elithile lokuqina. Lapho kudoba izinwele kamuva, ama-cuticle avuliwe avumela ama-molecule e-pigment ukuthi angene ngokushesha, aqede isidingo sodayi wezinwele ezengeziwe ezine-alkaline ephezulu futhi ngaleyo ndlela anciphise ingozi yomonakalo ophindwe kabili.
2. Ukwelashwa kwangaphambi kwesikhathi "kokuthuthukisa umbala" kwezinwele ezincane nezithambile
Ubuningi be-keratin bezinwele ezincane nezithambile buphansi kakhulu, kanti isakhiwo se-cuticles sincane. Uma zidaywe ngqo, ama-molecule e-pigment avame ukunamathela ebusweni futhi kunzima ukungena ungqimba lwe-cortex, okuholela ekubonisweni kombala okhanyayo kanye nokunyamalala kombala kalula. Kuleli qophelo, ungaqala ngokufaka i-ejenti yangaphambi kokwelashwa equkethe i-glyceryl monothioglycolate ezinweleni zakho: umphumela wayo wokunciphisa ungaphula kancane izibopho ze-disulfide ezinweleni ezincane nezithambile, okwenza isakhiwo sezinwele "sikhululeke" kakhulu, futhi ngesikhathi esifanayo, ifilimu evikelayo eyakhiwe amaqembu e-glyceryl ester ebusweni bezinwele ingavimbela ukulahlekelwa ngokweqile kwama-molecule e-pigment. Ngemva kokwelashwa ngaphambi kokudaya izinwele, ama-molecule e-pigment angasatshalaliswa ngokulinganayo ungqimba lwe-cortex, okuholela ekubonisweni kombala ogcwele, futhi kunganciphisa nokucasuka kwe-ammonia, i-hydrogen peroxide nezinye izingxenye kudayi wezinwele kuya ezinweleni ezincane nezithambile.
IV. Izinyathelo Zokuqapha Zokusebenzisa: Ukungezwani komzimba kanye nokusebenzisana kwefomula kubalulekile
Nakuba i-glyceryl monothioglycolate inezinzuzo ezibalulekile ekusizeni ukudaya izinwele, ngenxa yezakhiwo zayo zamakhemikhali, ukuphepha kanye nokuhleleka kwefomula kumele kuqashwe ngokucophelela ngesikhathi sokusetshenziswa ukuze kugwenywe izingozi ezingaba khona.
1. Ukungezwani komzimba okungenzeka: Ukuhlolwa kwesikhumba kumele kwenziwe
I-Glyceryl monothioglycolate ingesigaba se-thiol samakhemikhali futhi ingenye yezinto ezivame ukungezwani nezinwele emikhiqizweni yokunakekelwa kwezinwele. Kungakhathaliseki ukuthi ukuchayeka isikhathi eside ochwepheshe bezinwele (njengokuthintana okuphindaphindiwe kwesikhumba sesandla nomkhiqizo) noma abathengi abasebenzisa imikhiqizo yokudaya/yokudaya equkethe lesi sithako, kungabangela i-contact dermatitis - izimpawu zibonakala njengobomvu, ukulunywa, kanye nomuzwa wokushisa esikhumbeni sekhanda. Ezimweni ezimbi kakhulu, kungase kube nama-blisters, ukuxebuka, futhi kusakazeke ngisho nasezindaweni zokuxhumana njengobuso nentamo.
I-Glyceryl monothioglycolateKubaluleke nakakhulu ukuqaphela ukuthi le ngxenye ingahlala ezinweleni ngemva kokuzigcoba noma ukuzidaya kuze kube yizinyanga ezintathu. Ngisho noma kungekho ukungakhululeki okusobala ngesikhathi sokusetshenziswa kokuqala, izithako ezisele zingase ziqhubeke nokuthintana nesikhumba sekhanda ngesikhathi sokuhlanza nokukama izinwele okulandelayo, okubangela ukusabela kokungezwani komzimba okubambezelekile. Ngakho-ke, yonke imikhiqizo yokunakekela izinwele equkethe lesi sithako kumele ihlolwe isikhumba amahora angu-48 ngemuva kwendlebe noma ohlangothini lwangaphakathi lwengalo ngaphambi kokusebenzisa. Kuphela ngemva kokuqinisekisa ukuthi azikho izimpendulo ezifana nokubomvu, ukuvuvukala, noma ukulunywa lapho zingasetshenziswa khona ekhanda lekhanda.
2. Ukuncika kwefomula: Akunakusetshenziswa yodwa
Umphumela we-Glyceryl monothioglycolate uncike kakhulu ekusebenzisaneni kwefomula futhi awukwazi ukusetshenziswa wodwa ekunakekeleni izinwele. Ngakolunye uhlangothi, idinga ukuhlanganiswa nama-buffer (njenge-citric acid kanye ne-sodium dihydrogen phosphate) ukuze kulondolozwe indawo ezinzile ene-asidi encane. Uma ifomula ingenayo ama-buffer, inani layo le-pH linganda ngesikhathi sokugcina, hhayi nje kuphela ukulahlekelwa ubumnene bayo kodwa futhi okungenzeka kuholele ekunciphiseni umsebenzi. Ngakolunye uhlangothi, idinga ukuhlanganiswa nama-chelating agents (njenge-disodium EDTA) ukuvimbela ama-ion e-calcium kanye ne-magnesium emanzini ukuthi angasabelani nezingxenye futhi athinte ukuzinza.
Ngaphezu kwalokho, lesi sithako sineziphazamiso ezingahambisani nemikhiqizo ye-alkaline ephezulu, njengedayi yezinwele enokuqukethwe kwe-ammonia okungaphezu kuka-3%. Uma ixutshwe ngqo nedayi yezinwele ene-alkaline ephezulu, indawo ene-acid encane izophazamiseka. Ngeke nje ihluleke ukusiza ekuthuthukisweni kombala, kodwa futhi ingakhiqiza amagesi acasulayo, okwandisa umonakalo wezinwele kanye nokucasuka kwesikhumba. Ngakho-ke, ama-ejenti okuvimbela izinwele noma ama-ejenti okwelapha aqukethe lesi sakhi kufanele asetshenziswe ngokushintshana namadayi ezinwele (ngokuvamile kunconywa ukudaya izinwele emahoreni angu-24 kuya kwangu-48 ngemva kokudaya izinwele), futhi kufanele kugwenywe ukuthintana ngqo.
3. Ukwelashwa kwezinsalela: Kudingeka ukuhlanza ngokuphelele ngemva koku-ayina nokudaya
Njengoba i-glyceryl monothioglycolate ingase ihlale ezinweleni isikhathi eside, ngemva kokuba inqubo yokugoba nokudaya isiqediwe, kubalulekile ukuhlanza izinwele kahle nge-shampoo engathathi hlangothi ukuze ususe izingxenye ezisele. Lapho uhlanza, kunconywa ukusebenzisa amanzi afudumele (cishe ama-37℃) ukuze ugweme ukucasula isikhumba sekhanda ngamanzi ashisayo kakhulu. Ngesikhathi esifanayo, ungasebenzisa i-conditioner equkethe i-panthenol ne-ceramide ukulungisa ama-cuticle alimele nokunciphisa umthelela oqhubekayo wezingxenye ezisele ezinweleni.
V. Isiphetho: “Ukungathathelwa indawo” Kwezindima Zokusekela
Nakubai-glyceryl monothioglycolate CAS 30618-84-9Akuyona ingxenye eyinhloko yokudaya izinwele nombala, isibe “yisithako esiwusizo” esibalulekile enkambisweni yokudaya izinwele ngenxa yesakhiwo sayo sokunciphisa i-asidi encane. I-Glyceryl monothioglycolate inikeza ikhambi eliphephile nelisebenza kangcono lokudaya izinwele ezonakele kanye nezinwele ezincane nezithambile ngokuvula ama-cuticle nokwenza ngcono ukulungiswa kombala. Ngesikhathi esifanayo, iphinde ibeke isisekelo sokuthuthukisa ukuqina kanye nomphumela wokubonisa umbala wokudaya izinwele.
Kodwa-ke, ukungezwani komzimba okungenzeka kanye nokuncika kwefomula kusikhumbuza nokuthi ukusetshenziswa kwemikhiqizo yokunakekela izinwele kufanele kucabangele kokubili ukusebenza kahle kanye nokuphepha. Kungakhathaliseki ukuthi bangabathengi noma abalungisi bezinwele, kufanele baqonde ngokugcwele izici zezithako futhi balandele ngokuqinile imigomo yokusetshenziswa njengokuhlolwa kwesikhumba, ukuhlanganiswa kwefomula, kanye nokuhlanza ngokuphelele, ukuze lesi "sithako esisizayo" sidlale indima yaso ngenkathi sinciphisa izingozi zempilo ngezinga elikhulu. Esikhathini esizayo, ngokuthuthukiswa kobuchwepheshe be-chemistry yokulungisa izinwele, ifomula ye-glyceryl monothioglycolate ingase ithuthukiswe kakhulu. Isibonelo, ngokuyixuba nezithako zezitshalo (njenge-green tea extract kanye ne-chamomile extract), imiphumela yayo yokusiza ingagcinwa ngenkathi kunciphisa ukungezwani komzimba, kuhlinzeke ngesisombululo esiphephile nesithambile sensimu yokudaya izinwele.
Isikhathi sokuthunyelwe: Disemba 18-2025