Acetyl Tetrapeptide-5 yog dab tsi?
Acetyl Tetrapeptide-5 (CAS 820959-17-}9) yog ib qho hluavtaws luv-chain peptide nrog cov amino acid sequence Ac- Ala-His-Ser-His-OH, thiab ib qho hnyav molecular.49 Da. Nws raug cais raws li kev taw qhia peptide hauv cov khoom siv tshuaj pleev ib ce, tsim los hloov cov txheej txheem lom neeg hauv daim tawv nqaij.
Eyeseryl® yog lub npe lag luam lag luam cuam tshuam nrog Acetyl Tetrapeptide-5; Lub npe INCI yog Acetyl Tetrapeptide-5. Chemically, nws nqa ib qho kev hloov kho N-terminal acetylation, uas tau tshaj tawm los txhim kho peptide stability thiab kev nkag mus ntawm daim tawv nqaij piv rau cov tsis hloov pauv luv peptides. Nws tau muab los ua cov hmoov dawb lyophilized rau kev tsim cov tshuaj pleev ib ce, feem ntau suav nrog rau hauv cov tshuaj pleev qhov muag, gels thiab lub teeb emulsions.
Raws li kev siv tshuaj pleev ib ce, nws yog ib qho ntawm cov tshuaj pleev ib ce peptides ntau dua rau hauv qab - qhov muag puffiness formulations, nquag muaj nyob rau hauv premium anti- laus qhov muag kab mob nrog rau lwm yam peptides thiab ncig - txhawb nqa active.
Rau tej yam khoom specifications thiab cov ntaub ntawv muab khoom, mus saib lubAcetyl Tetrapeptide-5 hmoovnplooj ntawv khoom.
Dab tsi ua rau hauv qab -Qhov muag puffiness?
Hauv qab - qhov muag qhov muag yog anatomically pom puffiness: daim tawv nqaij yog tshwj xeeb tshaj yog nyias, subcutaneous connective cov ntaub so ntswg yog xoob, thiab capillary thiab lymphatic tes hauj lwm yog ntom thiab superficial. Ntau yam ua rau muaj nyob rau hauv - lub hnab ntim qhov muag pom, thiab tsis muaj ib qho chaw nyob rau txhua hom sib npaug.
Kev hloov pauv thaum sawv ntxov puffiness feem ntau yog txuas nrog nce capillary permeability thiab cov kua dej sib txuam. Nws feem ntau ua rau qaug zog, pw tsaug zog, noj ntsev ntau thiab lub sijhawm tshuaj ntsuam ntev, uas cuam tshuam cov kua dej hauv zos thiab kev tshem tawm qeeb.
Nyob rau hauv - qhov muag lub hnab zoo li yog tsav los ntawm maj mam poob ntawm dermal elasticity. Glycation thiab oxidative kev nyuaj siab puas tsuaj rau collagen thiab elastin fibers nyob rau hauv lub periorbital dermis, txo cov txheej txheem kev txhawb nqa thiab ua rau hauv qab cov kua thiab cov rog pads pom pom kev.
Ntau cov tshuaj decongestant lossis astringent cov khoom xyaw ua rau muaj kev pheej hmoo rau cov tawv nqaij periorbital. Peptide-raws li active active muaj nuj nqis rau lawv lub hom phiaj mechanism thiab feem ntau zoo kam rau ua, ua rau lawv haum rau rov siv nyob rau hauv no rhiab cheeb tsam.
Acetyl Tetrapeptide-5 ua haujlwm li cas?
Cov txheej txheem ntawm kev txiav txim ntawm Acetyl Tetrapeptide-5 tau nkag siab tias yog multifactorial, nrog peb txoj hauv kev sib tham hauv kev tshawb fawb thiab cov ntaub ntawv xa tawm.
Acetyl Tetrapeptide-5 cuam tshuam li cas rau Vascular Permeability?
Cov txiaj ntsig tseem ceeb ntawm Acetyl Tetrapeptide-5 yog kev hloov pauv ntawm vascular permeability thiab txhawb nqa cov kua dej sib npaug hauv cov ntaub so ntswg periorbital.
Raws li ib txwm muaj, cov kua dej thiab cov molecules me me tsis tu ncua los ntawm capillaries mus rau qhov chaw nruab nrab thiab rov ua dua. Thaum qhov nyiaj tshuav no cuam tshuam los ntawm kev qaug zog, o lossis kev ntxhov siab sab nraud, cov kua dej ntau dhau hauv cov xoob hauv qab - cov ntaub so ntswg qhov muag, ua rau pom qhov o.
Cov kev tshawb fawb hauv vitro ntawm endothelial cell monolayers qhia tias Acetyl Tetrapeptide-5 tuaj yeem txo cov vascular permeability nyob rau hauv ib koob-, los ntawm kev ntxiv dag zog rau endothelial barrier muaj nuj nqi thiab txwv cov kua dej ntau ntxiv rau hauv cov ntaub so ntswg ib puag ncig. Cov txheej txheem no tshwj xeeb tshaj yog cuam tshuam rau kev ncua sijhawm, thaum sawv ntxov- hom puffiness hauv qab-qhov muag uas tau tsav los ntawm kev faib tawm dej thaum hmo ntuj.
ACE yog dab tsi -Txoj Kev Sib Txuas?
Acetyl Tetrapeptide-5 tau kawm txog cov txheej txheem hais txog ACE uas tuaj yeem cuam tshuam rau vascular permeability thiab cov kua dej tsub zuj zuj hauv thaj chaw periorbital.
Angiotensin-hloov enzyme (ACE) koom nrog hauv kev tswj hwm vascular hauv zos. Hauv cov ntaub so ntswg, kev ua ACE hauv zos tau xav tias cuam tshuam rau periorbital vascular siab thiab kua dej sib npaug. Tus neeg muab khoom siv -tshaj tawm kev tshawb fawb qhia tias Acetyl Tetrapeptide-5 tuaj yeem ua raws li ACE-inhibiting peptide, txo cov kev hloov pauv ntawm angiotensin I mus rau angiotensin II ntawm cov tawv nqaij hauv zos.
Cov lus pom zoo hauv qab no suav nrog cov txiaj ntsig ntawm microcirculatory ntws, vascular permeability thiab kua dej sib npaug hauv thaj chaw periorbital. Txoj hauv kev no tseem cuam tshuam nrog kev txhim kho ntawm cov hlab ntsha- hom tsaus nti, los ntawm kev txhawb nqa cov ntshav ntws thiab txo qis cov ntshav deoxygenated hauv cov hlab ntsha sab nraud.
Acetyl Tetrapeptide-5 cuam tshuam li cas rau Glycation?
Tshaj li cov kua dej- cuam tshuam txog, Acetyl Tetrapeptide-5 kuj tau tshaj tawm los ua pov thawj los tiv thaiv -glycation kev ua, hais txog qhov ntev dua - lub sij hawm cov txheej txheem ntawm kev tsim cov hnab hauv qab lub qhov muag.
Glycation yog ib qho tsis yog -enzymatic cov tshuaj tiv thaiv uas cov piam thaj molecules khi rau collagen thiab elastin, tsim cov glycation qib siab kawg-cov khoom (AGEs) uas ua rau muaj protein ntau- sib txuas. Qhov no ua rau dermal fibers tawv, nkig thiab tsis tshua muaj elastic. Hauv nyias hauv qab - qhov muag ntawm daim tawv nqaij, glycation- cuam tshuam elasticity poob txo cov txheej txheem kev txhawb nqa, ua kom cov kua dej thiab cov rog pom ntau dua thiab ua rau muaj kev cuam tshuam mus tas li - hom hnab qhov muag.
Tus tswv lag luam- cov ntaub ntawv tshaj tawm qhia tau hais tias Acetyl Tetrapeptide-5 tuaj yeem cuam tshuam cov tshuaj tiv thaiv glycation, pab tiv thaiv collagen fibers los ntawm cross-txuas thiab khaws cia dermal extracellular matrix kev ncaj ncees. Nws kuj tau tshaj tawm los pab tiv thaiv antioxidant enzymes los ntawm glycation-induced inactivation, txhawb cov tawv nqaij endogenous antioxidant tiv thaiv periorbital oxidative kev nyuaj siab. Cov nyhuv no yog xav tias yuav pab txhawb rau lub sij hawm ntev ntawm daim tawv nqaij firmness thiab elasticity nyob ib ncig ntawm lub qhov muag.
Acetyl Tetrapeptide-5 puas tuaj yeem nkag mus rau daim tawv nqaij?
Acetyl Tetrapeptide-5 muaj qhov hnyav molecular ntawm kwv yees li 492.49 Da, muab tso rau hauv qab ntawm qhov feem ntau hais txog 500-Dalton pib. Txawm li cas los xij, "500-Dalton txoj cai" yog qhov kev xav dav dav es tsis yog kev lees paub ntawm kev nkag mus rau cov tshuaj pleev ib ce. Kev xa tawm tiag yog nyob ntawm peptide stability, formulation tsheb, concentration, daim tawv nqaij barrier mob thiab lwm yam physicochemical zog.
N-kev hloov kho acetylation kuj tau xav tias yuav txhim kho daim tawv nqaij permeation txheeb ze rau qhov tsis hloov pauv peptides ntawm qhov loj me. Rau cov formulators, qhov no txhais tau hais tias peptide concentration, formulation system thiab processing method tag nrho cov muaj feem xyuam rau tiag tiag - ntiaj teb no kev ua tau zoo, thiab kev nkag mus rau hauv yuav tsum tau soj ntsuam xyuas rau txhua yam khoom tiav.
Cov pov thawj scientific tiag tiag qhia dab tsi?
| Hom pov thawj | Qhov Nws Txhawb |
|---|---|
| Kev tshawb fawb hauv vitro | Vascular permeability / glycation- cuam tshuam txog kev ua haujlwm biochemical |
| Tus neeg muab khoom siv - luam tawm hauv vivo kuaj | Kev kho kom zoo nkauj hauv qhov muag - lub hnab zoo li |
| Kev ywj pheej tib neeg cov pov thawj kho mob | txwv |
| Kev kho mob pov thawj | Tsis tau tsim |
Tus neeg muab khoom siv- tau tshaj tawm hauv vivo kev sim qhia pom kev txhim kho hauv qee yam kev kawm thaum ntxov li 15 hnub, nrog kev ntsuas txuas ntxiv mus rau 60 hnub. Cov kev tshawb pom no yuav tsum tau muab txhais ua cov ntaub ntawv tshuaj pleev ib ce es tsis yog cov ntaub ntawv pov thawj ywj pheej.
Acetyl Tetrapeptide ua li cas -5 cuam tshuam ntau hom hnab hauv qab-qhov muag?
Hauv qab - hnab qhov muag tsis yog ib qho mob, thiab ntau hom sib txawv los ntawm cov txheej txheem sib txawv kiag li.
Edematous / kua dej- hom hauv qab - lub hnab qhov muag
Qhov no yog hom feem ntau txuam nrog Acetyl Tetrapeptide-5 hauv cov ntaub ntawv tshuaj pleev ib ce. Nws yog tus cwj pwm los ntawm qhov o ib ntus uas feem ntau yog qhov phem tshaj thaum sawv ntxov, txhim kho thoob plaws ib hnub, thiab ua rau tsis zoo ntawm kev pw tsaug zog, noj ntsev ntau thiab qaug zog. Rau hom puffiness no, cov lus thov ACE-txog thiab vascular permeability cuam tshuam ncaj qha.
Kev laus / laxity- hom hauv qab - hnab qhov muag
Hom no tshwm sim maj mam nrog lub hnub nyoog, tshwm sim los ntawm kev poob ntawm dermal collagen thiab elastin, tsis muaj zog ntawm cov leeg orbicularis oculi thiab protrusion ntawm orbital rog. Nws yog ruaj khov thiab tsis hloov pauv loj heev thoob plaws hnub. Acetyl Tetrapeptide-5 tuaj yeem pab txhawb los ntawm nws cov lus tshaj tawm los tiv thaiv-glycation thiab matrix-txhawb cov teebmeem, tab sis tsis tuaj yeem thim rov qab cov ntaub qhwv rog uas twb muaj lawm lossis hnyav anatomical sagging.
Pigmentary tsaus voj voog
Txawm hais tias tsis muaj tseeb qhov muag hnab, periorbital hyperpigmentation feem ntau coexists nrog puffiness. Acetyl Tetrapeptide-5 tuaj yeem pab txhim kho qhov pom ntawm xiav-ntsuab vascular tsaus voj voog los ntawm kev txhawb nqa microcirculation, tab sis nws tsis cuam tshuam ncaj qha rau melanin pigmentation.
Acetyl Tetrapeptide-5 Tsis Ua Li Cas?
Txhawm rau teeb tsa qhov kev cia siab tiag tiag, nws tseem ceeb sib npaug los piav qhia cov kev txwv:
Nws tsis tshem tawm cov pa roj orbital.
Nws tsis phais kho qhov muag pom lub hnab.
Nws tsis ncaj qha kho melanin- raws li pigmentary tsaus voj voog.
Nws tsis hloov kho kev kho mob rau qhov mob periorbital edema tshwm sim los ntawm cov mob hauv qab no.
Tag nrho cov teebmeem yog kev zoo nkauj zoo nkauj-raws li thiab txwv rau cov khaubncaws sab nraud povtseg ntawm cheeb tsam periorbital.
Yuav Ua Li Cas Acetyl Tetrapeptide-5 Sib Piv Nrog Lwm Cov Kev Kho Qhov Muag Peptides?
Acetyl Tetrapeptide-5 feem ntau yog qhov chaw rau puffiness thiab kua- cuam tshuam hauv qab - qhov muag kev txhawj xeeb, whereas lwm cov tshuaj pleev ib ce peptides tsom cov kab qhia, mob lossis kev kho mob extracellular-matrix.
| Cov khoom xyaw | Main Mechanistic Focus | Hom Qhov Muag - Daim Ntawv Thov Kev Kho Mob |
|---|---|---|
| Acetyl Tetrapeptide-5 | Npaj ACE-txog kev ua haujlwm, vascular permeability modulation, tiv thaiv-glycation | Hauv qab - qhov muag puffiness thiab qhov muag - lub hnab zoo li |
| Palmitoyl Tetrapeptide-7 | Inflamation thiab extracellular matrix txhawb nqa | Firming thiab anti-aging eye cream |
| Acetyl Hexapeptide-8 | Neurotransmitter- hais txog kev taw qhia | Kev nthuav qhia kab thiab crow's ko taw |
| GHK-Cu | ECM hloov kho thiab ua haujlwm antioxidant | Kev kho daim tawv nqaij thiab dav dav los tiv thaiv -aging |
| Dipeptide-2 | Decongesting / drainage -oriented cosmetic positioning | Ntxiv rau hauv qab - qhov muag puffiness |
Rau cov khoom siv kho qhov muag dav dav, Acetyl Tetrapeptide-5 feem ntau yog ua ke nrog lwm cov tshuaj ua haujlwm - piv txwv li, ua ke nrog cov wrinkle- phiaj peptide rau tag nrho cov tshuaj tiv thaiv- qhov muag ntshav, lossis nrog caffeine rau ntau txoj hauv kev decongestive formulation.
Dab tsi yuav tsum Formulators Paub Txog Acetyl Tetrapeptide-5?
Kev nkag siab txog cov txheej txheem tsuas yog thawj kauj ruam; txhais cov kev ua ub no rau hauv cov khoom ruaj khov, cov khoom siv tau zoo yuav tsum tau ua tib zoo tsim cov qauv tsim.
Dab tsi yog pH haum rau Acetyl Tetrapeptide-5?
Pom zoo formulation pH nyob ntawm cov raw-cov ntaub ntawv specification thiab cov ntaub ntawv ruaj ntseg khoom. Formulators yuav tsum paub meej tias qhov pH tau siv tau los ntawm tus neeg muag khoom daim ntawv qhia txog Kev Siv Hluav Taws Xob tam sim no thiab ua tiav - khoom ntsuas kev ruaj ntseg.
Thaum twg Yuav Tsum Ntxiv Acetyl Tetrapeptide-5?
Vim tias peptide ruaj khov tuaj yeem cuam tshuam los ntawm qhov ntev ntev ntawm qhov kub siab, cov qauv tsim feem ntau ntxiv peptide active thaum lub sijhawm tswj kom txias. Qhov ntsuas kub ntxiv uas tsim nyog yuav tsum raug tsim los ntawm tus neeg muag khoom - cov ntaub ntawv ruaj khov tshwj xeeb es tsis yog kho raws li qhov pib thoob ntiaj teb.
Puas yog Acetyl Tetrapeptide-5 Dej-Soluble?
Acetyl Tetrapeptide-5 feem ntau yog muab los siv rau hauv cov tshuab ua kom zoo nkauj aqueous, tab sis qhov tseeb solubility nyob ntawm raw cov ntaub ntawv, concentration, carrier thiab formulation tej yam kev mob. Nws yog feem ntau muab tso rau hauv aqueous theem ntawm emulsions thiab tsis haum rau cov roj ntshiab anhydrous.
Yuav tsum khaws Acetyl Tetrapeptide-5 Powder li cas?
Cov hmoov nyoos yuav tsum khaws cia kaw, tiv thaiv lub teeb thiab noo noo, nyob rau hauv lub tub yees lossis khov rau ntev - lub sijhawm cia. Cov khoom tiav lawm yuav tsum tau ntim rau hauv lub teeb -cov thawv tiv thaiv kom ruaj khov.
Rau ib tug ua tiav kev qhia npog cov formulation parameters, stability kev sim thiab cov teeb meem tshwm sim, txuas ntxiv nyeem peb daim ntawv qhia kev txhim kho Acetyl Tetrapeptide-5 tag nrho.
Dab tsi yog Qhov Pom Zoo Siv Qib?
Cov qib kev pom zoo yog nyob ntawm cov khoom siv raw- cov khoom specification, carrier system thiab tiav formulation. Cov ntaub ntawv muab khoom siv rau Eyeseryl-cov kev npaj muaj feem cuam tshuam tau tshaj tawm txog kev siv qib nyob ib puag ncig 0.01%, tab sis cov neeg tsim khoom yuav tsum ua raws li cov neeg muag khoom tshwj xeeb TDS thiab ua kom muaj kev ruaj ntseg thiab ua tau zoo hauv kev tsim tiav.
Nco ntsoov tias ntau tus neeg muag khoom muag muag Acetyl Tetrapeptide-5 ua ntej- diluted aqueous tov es tsis yog cov hmoov ntshiab. Yog tias siv daim ntawv daws teeb meem, suav cov ntsiab lus peptide tiag tiag raws li kev daws teeb meem kom tsis txhob noj qis dua.
FAQs
Acetyl Tetrapeptide-5 yog dab tsi?
Acetyl Tetrapeptide-5 yog ib qho hluavtaws bioactive tetrapeptide siv los ua cov khoom siv tshuaj pleev ib ce, feem ntau hauv cov khoom kho qhov muag. Nws muaj cov amino acid sequence Ac- Ala-Nws-Ser-His-OH thiab CAS npe 820959-17-9.
Puas yog Acetyl Tetrapeptide-5 zoo ib yam li Eyeseryl?
Eyeseryl® yog lub npe lag luam lag luam cuam tshuam nrog Acetyl Tetrapeptide-5. Lub npe INCI thiab cov khoom siv dav dav yog Acetyl Tetrapeptide-5.
Acetyl Tetrapeptide-5 ua haujlwm li cas?
Kev tshawb fawb tam sim no qhia tias nws ua haujlwm los ntawm peb txoj hauv kev: ACE-txoj kev cuam tshuam uas tuaj yeem cuam tshuam rau hauv zos microcirculation, kev hloov pauv ntawm vascular permeability kom txo tau cov kua qaub, thiab tiv thaiv-glycation kev ua haujlwm los txhawb kev ncaj ncees ntawm dermal matrix. Kev ywj pheej tib neeg cov pov thawj kho mob tseem txwv.
Puas yog Acetyl Tetrapeptide-5 ua haujlwm rau txhua hom hnab qhov muag?
Tsis yog. Nws yog feem ntau cuam tshuam rau cov kua dej - hom thiab puffiness - cuam tshuam hauv qab - qhov muag pom. Nws tsis hais txog cov hnab ntim qhov muag loj uas tshwm sim los ntawm cov roj uas txhaws taus, thiab tsis kho melanin - raws li cov voj voog tsaus.
Acetyl Tetrapeptide-5 puas tuaj yeem nkag mus rau ntawm daim tawv nqaij?
Nws qhov hnyav molecular ntawm ~ 492.49 Da poob qis dua qhov feem ntau hais txog 500-Dalton nkag mus rau qhov pib, tab sis txoj cai 500-Dalton yog qhov dav dav, tsis yog qhov lav. Kev xa tawm tiag tiag yog nyob ntawm kev tsim qauv, kev mob ntawm daim tawv nqaij thiab cov khoom hauv paus.
Puas yog Acetyl Tetrapeptide-5 haum rau cov tshuaj pleev qhov muag?
Yog, nws yog zoo suited rau qhov muag serum formulations. Nws yog feem ntau siv rau hauv cov tshuab aqueous, feem ntau zoo rau ntawm daim tawv nqaij mos periorbital, thiab sib xws nrog cov tshuaj pleev ib ce uas muaj cov tshuaj humectants thiab soothing cov khoom xyaw.
CAS Nr .: 820959-17-9
CAS 820959-17-9 yog CAS tus lej sau npe tau muab rau Acetyl Tetrapeptide-5, tus qauv tshuaj tiv thaiv rau kev muab khoom, cov ntaub ntawv tswj hwm thiab kev sau cov khoom xyaw.
Yuav ua li cas yuav tsum tau Acetyl Tetrapeptide-5?
Nws yuav tsum tau muab los ntawm cov tuam txhab muaj npe peptide uas muab batch- cov ntaub ntawv tshwj xeeb zoo suav nrog HPLC cov ntaub ntawv purity, LC-MS pov thawj tus kheej thiab Daim Ntawv Pov Thawj Kev Ntsuam Xyuas. Cov neeg yuav khoom yuav tsum txheeb xyuas cov qib purity, cov kuab tshuaj seem thiab cov khoom sib xws ua ntej muab cov xaj ntau.
Xaiv qhov Kev Tshawb Fawb & Kev Tshawb Fawb
Puig A, Antón JM, Pérez R, Mangues M. (2007).Eyeseryl® thiab Leuphasyl®: Synthetic Peptides as Advanced Cosmetic Actives. Phau ntawv Journal ntawm Cosmetic Science, 58(3), 289–299.
Lipotec SAU (nd).Eyeseryl® Technical Datasheet: Acetyl Tetrapeptide-5. Barcelona, Spain: Lipotec Active Cosmetic Ingredients.
Cosmetic Ingredient Review (CIR) Expert Panel. (2021).Kev soj ntsuam kev nyab xeeb ntawm Acetyl Tetrapeptide-5 raws li siv hauv tshuaj pleev ib ce. International Journal of Toxicology, 40(3_suppl), 5S–18S.
Bos JD, Meinardi MMH (2000). Txoj cai 500 Dalton rau kev nkag mus ntawm daim tawv nqaij ntawm cov tshuaj sib xyaw thiab tshuaj.Kev sim Dermatology, 9(3), 165–169.
Zhang L, et al. (2022). Anti-glycation thiab antioxidant kev ua ub no ntawm cosmetic oligopeptides: Ib tug qauv- kev tshuaj xyuas.Phau ntawv Journal of Cosmetic Dermatology, 21(11), 4587–4598.
Xaus
Acetyl Tetrapeptide-5 yog siv dav siv tshuaj pleev ib ce peptide rau hauv qab - kev saib xyuas qhov muag puffiness, nrog rau kev thov ntau- txoj hauv kev uas npog ACE-txog kev ua haujlwm, vascular permeability modulation thiab tiv thaiv glycation matrix. Nws cov phiaj xwm kev ua ub no thiab feem ntau ua rau muaj kev tiv thaiv zoo ua rau nws muaj kev ua haujlwm zoo rau cov qauv kho qhov muag zoo.
Cov pov thawj tam sim no muaj zog tshaj plaws nyob rau hauv vitro thiab tus neeg muag khoom- qib kawm; Kev ywj pheej tib neeg kev kuaj mob validation tseem txwv. Cov neeg tsim khoom thiab cov neeg yuav khoom yuav tsum ntsuas cov khoom siv raw zoo, cov ntaub ntawv xa khoom thiab kev tsim qauv ruaj khov thaum tsim cov khoom uas muaj cov khoom xyaw no.
HDM BIO muab cov khoom siv siab -purity cosmetic- qib Acetyl Tetrapeptide-5 nrog tag nrho cov ntaub ntawv tshuaj ntsuam xyuas, tsim nyog rau kev tsim kho thiab kev tsim khoom loj.
Txhawm rau thov Daim Ntawv Qhia Txog Kev Tshawb Fawb, piv txwv Daim Ntawv Pov Thawj Kev Ntsuam Xyuas lossis cov lus hais ntau, mus saib nplooj ntawv Acetyl Tetrapeptide-5 raw khoom.