Ivithamin C(VC) isithako esiqhelekileyo esimhlophe kwizinto zokuthambisa, kodwa kukho amahemuhemu okuba ukusebenzisa izithambiso ezine-VC ngexesha lemini akuyi kusilela nje ukwenza mhlophe ulusu, kodwa kuya kuba mnyama ulusu; abanye abantu banexhala lokuba ukusebenzisa iimveliso zokhathalelo lwesikhumba ezine-VC kunye ne-nicotinamide ngaxeshanye kuya kubangela ukungezwani komzimba. Ukusetyenziswa kwexesha elide le-VC-containing cosmetics kuya kwenza ulusu lube luncinci. Enyanisweni, ezi zonke kukungaqondi malunga VC-eziqulathe izithambiso.
Inkolelo yoku-1: Ukuyisebenzisa emini kuya kuba mnyama ulusu lwakho
I-VC, eyaziwa ngokuba yi-L-ascorbic acid, yi-antioxidant yendalo enokuthi isetyenziswe ukunyanga nokuthintela ukutshiswa lilanga kwesikhumba. Kwizinto zokuthambisa, i-VC inokunciphisa inkqubo yokwenziwa kwe-melanin efana ne-dopaquinone ngokusebenzisana nee-ion zethusi kwindawo esebenzayo ye-tyrosinase, ngaloo ndlela iphazamise ukuveliswa kwe-melanin kunye nokuphumeza umphumo wokuba mhlophe kunye nokususa i-freckles.
Ukubunjwa kwe-melanin kuhambelana neempendulo ze-oxidation. Njenge-antioxidant eqhelekileyo,VCinokuthintela ukusabela kwe-oxidation, ivelise isiphumo esithile sobumhlophe, iphucule ukulungiswa kolusu kunye namandla okuvuselela, ukulibazisa ukuguga, kunye nokunciphisa umonakalo we-ultraviolet esikhumbeni. I-VC ayizinzile kwaye i-oxidized ngokulula emoyeni kwaye ilahlekelwa umsebenzi wayo we-antioxidant. Imisebe ye-Ultraviolet iya kukhawulezisa inkqubo ye-oxidation. Ngoko ke, kucetyiswa ukusebenzisaI-VC-equlethe izinto zokuthambisaebusuku okanye kude nokukhanya. Nangona ukusetyenziswa kwe-cosmetics equkethe i-VC ngexesha lemini ayinakufezekisa iziphumo ezilungileyo, ayiyi kubangela ukuba ulusu lube mnyama. Ukuba usebenzisa izinto zokunyamekela ulusu ezine-VC emini, kufuneka uzikhusele elangeni, njengokunxiba iimpahla ezinemikhono emide, umnqwazi, neparasol. Imithombo yokukhanya eyenziweyo efana nezibane ze-incandescent, izibane ze-fluorescent, kunye nezibane ze-LED, ngokungafaniyo nemisebe ye-ultraviolet, ayichaphazeli i-VC, ngoko akukho mfuneko yokukhathazeka malunga nokukhanya okuphuma kwizikrini zefowuni ezichaphazela ukusebenza kwe-cosmetics equkethe i-VC.
Inkolelo yesi-2: Ukusetyenziswa kwexesha elide kuya kwenza ulusu lube luncinci
Into esisoloko sibhekisa kuyo“ukuncipha kwesikhumba”ngokwenene kukubhitya kwestratum corneum. Isizathu esibalulekileyo sokunciphisa i-corneum ye-stratum kukuba iiseli ezikwi-basal layer zonakaliswe kwaye azikwazi ukwahlula kwaye zivelise ngokuqhelekileyo, kwaye umjikelezo wokuqala we-metabolic uyatshatyalaliswa.
Nangona i-VC i-acidic, umxholo we-VC kwii-cosmetics awanelanga ukubangela ingozi eluswini. I-VC ayiyi kuyenza i-stratum corneum ibe mncinci, kodwa abantu abane-stratum corneum encinci badla ngokuba nolusu olubuthathaka. Ngoko ke, xa usebenzisa i-VC-equlethe iimveliso ezimhlophe, kufuneka uqale uzame kwiindawo ezinjengeendlebe ezingemva kweendlebe ukujonga ukuba kukho nayiphi na i-allergies.
Izithambisokufuneka isetyenziswe ngokumodareyitha. Ukuba uzisebenzisa ngokugqithisileyo usukela ukwenza mhlophe, uya kuphulukana nangaphezulu kunokuzuza. Ngokubhekiselele kwi-VC, imfuno yomzimba womntu kunye nokufunxa kwe-VC kulinganiselwe. I-VC edlula iindawo eziyimfuneko zomzimba womntu ayiyi kuxutywa kuphela, kodwa inokubangela ukuba kube lula ukurhuda kunye nokuchaphazela umsebenzi wokudibanisa. Ngoko ke, izithambiso ezine-VC akufanele zisetyenziswe ngokugqithiseleyo.
Ixesha lokuposa: Dec-15-2023