{"id":6283,"date":"2023-11-13T06:33:18","date_gmt":"2023-11-13T06:33:18","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=6283"},"modified":"2026-04-28T10:42:22","modified_gmt":"2026-04-28T10:42:22","slug":"why-does-many-people-use-niacinamide-with-no-results","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/tr\/why-does-many-people-use-niacinamide-with-no-results\/","title":{"rendered":"Niasinamid bu kadar \u015fa\u015f\u0131rt\u0131c\u0131 olarak lanse ediliyor, neden bir\u00e7ok insan aylarca hi\u00e7bir sonu\u00e7 almadan kullan\u0131yor?"},"content":{"rendered":"<p><!-- lc-qa-start --><\/p>\n<p><strong>H\u0131zl\u0131 cevap:<\/strong> Genel end\u00fcstriyel-kimya konular\u0131nda, en g\u00fcvenli ticari karar genellikle tek bir basitle\u015ftirilmi\u015f kurala g\u00fcvenmek yerine, uygulama uygunlu\u011funu, spesifikasyonu, proses uyumlulu\u011funu ve ta\u015f\u0131ma gereksinimlerini birlikte kontrol etmekten gelir.<\/p>\n<p><!-- lc-qa-end --><\/p>\n<p>\"Beyazlat\u0131c\u0131\" bile\u015fenler aras\u0131nda niasinamid en ucuz olan\u0131d\u0131r, ancak en etkili olan\u0131 de\u011fildir. Buna ek olarak, niasinamid beyazlatma eri\u015fimi nispeten tektir, beyazlatmak i\u00e7in tek ba\u015f\u0131na niasinamid, etkisi nispeten zay\u0131ft\u0131r. Birka\u00e7 ayl\u0131k kullan\u0131mdan sonra i\u015fe yaramamas\u0131 \u00f6zellikle \u015fa\u015f\u0131rt\u0131c\u0131 de\u011fildir. Ve tek bir niasinamid, beyazlatsa bile, siyah kullan\u0131m\u0131n\u0131 durdurduktan sonra. Beyazlatma ya da keskin ni\u015fanc\u0131 melanin hedefli birden fazla yoldan ba\u015flamak zorunda. Tabii ki, hassas cilt uyar\u0131lmaktan korkuyorsa, son zamanlarda pop\u00fcler olan hafif glisirizin gibi baz\u0131 daha iyi sonu\u00e7lar veren, nazik ve siyah kar\u015f\u0131t\u0131 olmayan bile\u015fenleri se\u00e7ebilirsiniz.<\/p>\n<p>Niasinamid: melanin s\u0131zd\u0131rmazl\u0131\u011f\u0131<\/p>\n<p>Herkes oyun oynam\u0131\u015f ya da d\u00f6v\u00fc\u015f sanatlar\u0131 romanlar\u0131 okumu\u015f olmal\u0131. \u00c7o\u011fu zaman, i\u00e7lerindeki b\u00fcy\u00fck k\u00f6t\u00fcler m\u00fch\u00fcrlenmi\u015f iblislerdir. Kadim g\u00fc\u00e7ler onu m\u00fch\u00fcrlemek i\u00e7in birlikte \u00e7al\u0131\u015fm\u0131\u015f ama yok edememi\u015flerdir. Zamanla m\u00fch\u00fcr zay\u0131flar ya da k\u0131r\u0131l\u0131r ve iblis yine de d\u00fcnyan\u0131n ba\u015f\u0131na bela olmak i\u00e7in ortaya \u00e7\u0131kar.<\/p>\n<p>Bir benzetme yapacak olursak, melanin \u015feytand\u0131r ve niasinamid beyazlatman\u0131n prensibi \u015feytan\u0131 yok etmek de\u011fil, m\u00fch\u00fcrlemektir. Niasinamidin \u00f6zel molek\u00fcler yap\u0131s\u0131 melanositlerden epidermise melanin transferini azalt\u0131r. Bu sayede melanin kas\u0131n taban\u0131nda kal\u0131r ve biz onu g\u00f6rmeyiz. Ama her zaman oradad\u0131r, gitmez ve azalmaz. Kullanmay\u0131 b\u0131rakt\u0131\u011f\u0131n\u0131zda ve m\u00fch\u00fcr gitti\u011finde, tekrar sal\u0131nacakt\u0131r, bu y\u00fczden niasinamid bronzla\u015fma kar\u015f\u0131t\u0131d\u0131r.<\/p>\n<p>D\u00fcnyan\u0131n en \u00e7ok ara\u015ft\u0131r\u0131lan niasinamidi Procter &amp; Gamble'd\u0131r, ne de olsa bu onlar\u0131n ana bile\u015fenidir. Ancak onlar bile \"Niacinamide's Inhibition of Melanin Transporter is Reversible\" ba\u015fl\u0131kl\u0131 \u00e7al\u0131\u015fmalar\u0131nda niasinamidin bronzla\u015fma kar\u015f\u0131t\u0131 oldu\u011fu ger\u00e7e\u011fini a\u00e7\u0131k\u00e7a ortaya koymu\u015flard\u0131r.<\/p>\n<table width=\"963\">\n<tbody>\n<tr>\n<td colspan=\"4\" width=\"963\">Niasinamid bronzla\u015fma kar\u015f\u0131t\u0131 i\u00e7in h\u00fccresel test<\/td>\n<\/tr>\n<tr>\n<td>\u0130\u015fleme Grubu<\/td>\n<td>Floresan yo\u011funlu\u011fu<\/td>\n<td>Melanin ta\u015f\u0131nmas\u0131n\u0131n engellenmesi (%)<\/td>\n<td>Anti-melanizasyon (%)<\/td>\n<\/tr>\n<tr>\n<td>Kontrol grubu<\/td>\n<td>1.19\u00b10.1<\/td>\n<td>&#8211;<\/td>\n<td>&#8211;<\/td>\n<\/tr>\n<tr>\n<td>Niasinamid<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>3 g\u00fcnl\u00fck kullan\u0131m<\/td>\n<td>1.02\u00b10.05<\/td>\n<td>14<\/td>\n<td>&#8211;<\/td>\n<\/tr>\n<tr>\n<td>1 g\u00fcnl\u00fc\u011f\u00fcne durduruldu<\/td>\n<td>1.01\u00b10.06<\/td>\n<td>14<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td>2 g\u00fcn s\u00fcreyle durduruldu<\/td>\n<td>1.07\u00b10.02<\/td>\n<td>10<\/td>\n<td>29<\/td>\n<\/tr>\n<tr>\n<td>3 g\u00fcnl\u00fck kullan\u0131m<\/td>\n<td>1.17\u00b10.04<\/td>\n<td>2<\/td>\n<td>86<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>H\u00fccresel deneylerde, niasinamid kesildikten iki g\u00fcn sonra bronzla\u015fma kar\u015f\u0131tl\u0131\u011f\u0131n\u0131n \u00e7oktan ortaya \u00e7\u0131kt\u0131\u011f\u0131 a\u00e7\u0131k\u00e7a g\u00f6r\u00fclm\u00fc\u015ft\u00fcr. \u00dc\u00e7\u00fcnc\u00fc g\u00fcne gelindi\u011finde ise, niasinamid kullan\u0131lmadan \u00f6nceki haline g\u00f6re esasen kararma kar\u015f\u0131t\u0131 bir durum s\u00f6z konusuydu.<\/p>\n<p>H\u00fccresel deneylerin hikayeyi anlatmad\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcn\u00fcyorsan\u0131z, o zaman uzun vadeli insan testlerine g\u00f6z at\u0131n. Sekiz haftal\u0131k s\u00fcrekli kullan\u0131mdan sonra, deneklerin ciltlerinin rengi a\u00e7\u0131lm\u0131\u015ft\u0131r. Ancak, kontrol grubu ile birlikte bakt\u0131\u011f\u0131m\u0131zda, bunun anlaml\u0131 olmad\u0131\u011f\u0131n\u0131 ve beyazl\u0131ktaki mutlak fark\u0131n o kadar da fazla olmad\u0131\u011f\u0131n\u0131 g\u00f6r\u00fcyoruz. Belki de bunun nedeni deneklerin s\u0131k\u0131 bir g\u00fcne\u015f korumas\u0131 kullanmalar\u0131 gereklili\u011fidir.<\/p>\n<p>Dahas\u0131, niasinamid kesildikten sonra, insan testinde de \u00f6nemli bir bronzla\u015fma \u00f6nleyici etki g\u00f6stermi\u015ftir. Alt\u0131 ay i\u00e7inde, niasinamid taraf\u0131ndan m\u00fch\u00fcrlenen melanin biraz t\u00fckendi. B\u00f6ylece cilt yava\u015f yava\u015f karard\u0131. Sonunda, kullan\u0131m \u00f6ncesiyle yakla\u015f\u0131k ayn\u0131 duruma geri d\u00f6nd\u00fc.<\/p>\n<p>Bu \u00e7al\u0131\u015fmada, eklenen niasinamid miktar\u0131 da \u00e7ok detayl\u0131 bir \u015fekilde incelenmi\u015f, d\u00fc\u015f\u00fck konsantrasyondaki niasinamidin beyazlatma etkisinin neredeyse hi\u00e7 olmad\u0131\u011f\u0131 g\u00f6r\u00fclm\u00fc\u015ft\u00fcr. \u00d6rne\u011fin, ara\u015ft\u0131rmac\u0131lar 2% niasinamidin beyazlatma etkisini test ettiler ve kontrol grubundan esasen hi\u00e7bir fark yoktu!<\/p>\n<p>Yani niasinamid ile vard\u0131\u011f\u0131m\u0131z sonu\u00e7 \u00e7ok a\u00e7\u0131k:<\/p>\n<p>1. Tek bir niasinamidin beyazlatma etkisi nispeten s\u0131n\u0131rl\u0131d\u0131r<br \/>\n2. S\u0131n\u0131rl\u0131 bir beyazlatma etkisi i\u00e7in y\u00fcksek konsantrasyonda 5% veya daha fazlas\u0131na ihtiya\u00e7 vard\u0131r ve d\u00fc\u015f\u00fck konsantrasyonun hi\u00e7bir etkisi yoktur.<br \/>\n5. niasinamid beyazlatma karanl\u0131k kar\u015f\u0131t\u0131 olacakt\u0131r<br \/>\nAncak, bu markalar size s\u00f6ylemeyecek, belki de sadece ilgili \u00e7al\u0131\u015fmalara yak\u0131ndan bakmad\u0131lar ya da belki de sadece kafas\u0131 kar\u0131\u015fm\u0131\u015f gibi davran\u0131yorlar, sadece niasinamidi trafi\u011fin bir bile\u015feni olarak ovmak istiyorlar. Ve b\u00f6ylece piyasada bir\u00e7ok niasinamid tuza\u011f\u0131 vard\u0131r.<\/p>\n<p>\u0130lk tuzak, d\u00fc\u015f\u00fck konsantrasyonda niasinamid kullanmak ve yine de s\u00fcrmektir. \u0130\u015fe yaray\u0131p yaramad\u0131\u011f\u0131na gelince, bunun bir garantisi yoktur.<\/p>\n<p>\u0130kinci tuzak t\u00fcr\u00fc, ilk tuzak t\u00fcr\u00fcnden biraz daha sorumludur ve bu da y\u00fcksek konsantrasyonda niasinamid kullanmakt\u0131r. Test konsantrasyonu 5% de\u011fil mi? O zaman 10% ekleyece\u011fim, hi\u00e7bir etkisi olmayaca\u011f\u0131ndan korkmuyorum. Ancak kozmetik y\u00f6netmeliklerine g\u00f6re, g\u00fcvenli niasinamid konsantrasyonu 5%'dir, daha y\u00fcksek olursa tahri\u015f riski vard\u0131r. Ve bir\u00e7ok marka y\u00fcksek safl\u0131kta niasinamid se\u00e7mez, ancak maliyete g\u00f6re neredeyse yeterli olan\u0131 se\u00e7er. Dolay\u0131s\u0131yla, y\u00fcksek konsantrasyonda eklenen kal\u0131nt\u0131 niasin g\u00f6z ard\u0131 edilemez ve ba\u015fka bir tahri\u015f riski olu\u015fturur.<\/p>\n<p>Son tuzak, tek bir niasinamid kullanmak ve di\u011fer bile\u015fenlerden kas\u0131tl\u0131 olarak ka\u00e7\u0131nmakt\u0131r. Melanin ta\u015f\u0131nmas\u0131n\u0131 engellemek beyazlatma yolunun sadece bir par\u00e7as\u0131 oldu\u011fundan, sonu\u00e7lar\u0131 en \u00fcst d\u00fczeye \u00e7\u0131karmak i\u00e7in birden fazla yol gereklidir. Yaln\u0131zca tek bir bile\u015fen istiyorsan\u0131z, birden fazla beyazlatma yolunu kapsayabilecek \u00e7ok y\u00f6nl\u00fc bir bile\u015fen se\u00e7in.<\/p>\n<p>Bu tuzaklar\u0131n varl\u0131\u011f\u0131, bir\u00e7ok insan\u0131n niasinamidi bu kadar uzun s\u00fcredir hi\u00e7bir sonu\u00e7 almadan kullanmas\u0131n\u0131n nedenidir.<\/p>\n<p>Ger\u00e7ek beyazlatma: ba\u015flamak i\u00e7in birden fazla yol<\/p>\n<p>Melanin a\u015fa\u011f\u0131daki ana ad\u0131mlarda \u00fcretilir:<br \/>\n1. Ultraviyole \u0131\u015f\u0131k cilde \u00e7arparak serbest oksijen \u00fcretir<br \/>\n2. Serbest oksijen sitokin \u00fcretimini uyar\u0131r<br \/>\n3. Sitokinler melanositleri aktive eder<br \/>\n4. Oksidatif stres alt\u0131ndaki melanositlerdeki tirozinaz, melanin \u00f6nc\u00fclleri \u00fcretir ve bunlar oksitleyici bir ortamda melanine d\u00f6n\u00fc\u015f\u00fcr<br \/>\n5. Melanin melanositlerden stratum corneum'a ta\u015f\u0131n\u0131r.<\/p>\n<p>Dolay\u0131s\u0131yla, yukar\u0131daki melanin \u00fcretimi ad\u0131mlar\u0131na yan\u0131t olarak, beyazlatma yolumuz da vard\u0131r<\/p>\n<p>1. G\u00fcne\u015ften korunma<br \/>\n2. sitokin inhibisyonu<br \/>\n3. serbest oksijen kar\u015f\u0131t\u0131<br \/>\n4. Tirozinaz aktivitesini inhibe eder<br \/>\n5. Melanin ta\u015f\u0131nmas\u0131n\u0131 inhibe eder<br \/>\n6. H\u00fccre yenilenmesini ve melanin pul pul d\u00f6k\u00fclmesini destekler<\/p>\n<p>Bu kadar \u00e7ok beyazlatma yolu aras\u0131nda niasinamid bunlardan sadece birinden sorumludur ve do\u011fal beyazlatma etkisi belirgin de\u011fildir. Y\u00fcksek konsantrasyonlarda bile, koyula\u015fmak yerine cilt intolerans\u0131na neden olur ve sitokin salg\u0131lanmas\u0131n\u0131 uyar\u0131r. Yani ger\u00e7ekten beyazlamak istiyorsan\u0131z, birden fazla yolu kapsamal\u0131s\u0131n\u0131z. Cilt tolerans\u0131n\u0131z y\u00fcksek de\u011filse, hafif ve etkili bir bile\u015fen bulmay\u0131 umuyorsan\u0131z, bu bile\u015fen de \u00e7ok y\u00f6nl\u00fc olsa iyi olur, hafif glisirizin gibi birka\u00e7 yolu kapsayabilir, iyi bir se\u00e7imdir.<\/p>\n<p>\u00c7ok yollu beyazlatma bile\u015feninin temsilcisi: Meyan k\u00f6k\u00fc<\/p>\n<p>Meyan k\u00f6k\u00fc, dipotasyum glisirizinat\u0131n baz\u0131 sitokin inhibe edici etkilere sahip oldu\u011fu ve b\u00f6ylece melanin aktivitesini azaltt\u0131\u011f\u0131 iyi bilinen bir beyazlat\u0131c\u0131 bile\u015fendir.<\/p>\n<p>Glycyrrhiza glabra bir t\u00fcr meyan k\u00f6k\u00fcd\u00fcr ve di\u011fer meyan k\u00f6k\u00fc ile kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda, Glycyrrhiza glabra'da \u00f6zel bir bile\u015fen vard\u0131r - Glycyrrhiza glabra. Yap\u0131lan ara\u015ft\u0131rmalara g\u00f6re iyi bir beyazlatma etkisine sahip oldu\u011fu do\u011frulanm\u0131\u015ft\u0131r. Sadece fotoglisirrhizidinin mevcut fiyat\u0131 \u00e7ok pahal\u0131d\u0131r ve bu da kullan\u0131m\u0131n\u0131 engellemektedir.<\/p>\n<p>Glisirizinin molek\u00fcler yap\u0131s\u0131 nispeten karma\u015f\u0131k oldu\u011fundan, sadece meyan k\u00f6k\u00fcnden elde edilebilir. Fotoglisirizin ise sadece fotoglisiriza glabra rizomunda bulunur ve bu da kuru a\u011f\u0131rl\u0131\u011f\u0131n sadece binde birini olu\u015fturur [3]. Bu, bir kilogram kurutulmu\u015f Glycyrrhiza glabra'dan sadece 1 g glisirizin elde edilebilece\u011fi anlam\u0131na gelir, bu nedenle bu bile\u015fenin bu kadar pahal\u0131 olmas\u0131 \u015fa\u015f\u0131rt\u0131c\u0131 de\u011fildir.<\/p>\n<p>Pahal\u0131 olmas\u0131n\u0131n yan\u0131 s\u0131ra, beyazlatmada meyan k\u00f6k\u00fc kullanman\u0131n ger\u00e7ekten bir dezavantaj\u0131 yoktur. \u00c7\u00fcnk\u00fc sitokinleri inhibe edebilir, serbest oksijeni \u00f6nleyebilir, tirozinaz aktivitesini inhibe edebilir.<\/p>\n<p>Light Glycyrrhizin sitokinlerin sal\u0131n\u0131m\u0131n\u0131 etkili bir \u015fekilde engeller, b\u00f6ylece melanositlerin aktivasyonunu \u00f6nler ve melanin \u00fcretimini kayna\u011f\u0131ndan bast\u0131r\u0131r.<\/p>\n<p>Testte [4], d\u0131\u015f uyar\u0131m alt\u0131nda h\u00fccrelerin melanositlerin aktivasyonundan sorumlu olan interl\u00f6kinler gibi sitokinleri salg\u0131lad\u0131\u011f\u0131 g\u00f6r\u00fclebilir. Ancak fotoglikodin kullan\u0131m\u0131 ile t\u00fcm bu sitokinlerin salg\u0131lanmas\u0131 engellenmi\u015ftir. Dolay\u0131s\u0131yla, light glisirizin sadece cildi beyazlatmakla kalmaz, ayn\u0131 zamanda sitokin reaksiyonlar\u0131n\u0131n [5] neden oldu\u011fu pigmentasyonu, en tipik olarak siyah akne izlerini, ayr\u0131ca cildin donuklu\u011funu ve baz\u0131 mamut bile\u015fenlerine kar\u015f\u0131 toleranss\u0131zl\u0131\u011f\u0131n neden oldu\u011fu anti-siyahl\u0131\u011f\u0131 da azalt\u0131r.<\/p>\n<p>Bu a\u00e7\u0131dan bak\u0131ld\u0131\u011f\u0131nda, fotoglikodin hassas ciltler i\u00e7in ideal bir beyazlatma bile\u015fenidir, \u00e7\u00fcnk\u00fc hafiftir, tahri\u015f edici de\u011fildir ve sitokinlerle ili\u015fkili batma ve k\u0131zar\u0131kl\u0131\u011f\u0131n giderilmesinde etkilidir.<\/p>\n<p>Fotoglikodin ayr\u0131ca tirozinaz aktivitesini de inhibe eder.<\/p>\n<p>Melanositlerde, tirozinaz bir tirozin molek\u00fcl\u00fcn\u00fc yakalar ve onu melanin \u00f6nc\u00fcs\u00fcne d\u00f6n\u00fc\u015ft\u00fcr\u00fcr, bu da daha sonra melanine d\u00f6n\u00fc\u015ft\u00fcr\u00fcl\u00fcr. Bu s\u00fcre\u00e7te tirozinaz, tirozin kilidini melanin \u00f6nc\u00fcllerine a\u00e7maya devam eden bir anahtar gibidir. Fotoglikozid ise kimyasal yap\u0131s\u0131nda tirozine belli bir benzerlik g\u00f6sterir ve kilit, tirozinaz, fotoglikozidin i\u00e7ine sokuldu\u011funda s\u0131k\u0131ca kaynaklanarak kapan\u0131r. Tirozin ile reaksiyona girebilen tirozinaz enzimlerinin say\u0131s\u0131 b\u00fcy\u00fck \u00f6l\u00e7\u00fcde azal\u0131r ve melanin \u00fcretimi \u00e7ok daha az olur [6].<\/p>\n<p>Bir dizi beyazlat\u0131c\u0131 bile\u015fen aras\u0131nda, light glycopyrrolate'in tirozinaz\u0131 inhibe etme kabiliyetinin olduk\u00e7a g\u00fc\u00e7l\u00fc oldu\u011fu d\u00fc\u015f\u00fcn\u00fclmektedir [7]; bu, niasinamidden 138 kat ve etil C Vitamininden yakla\u015f\u0131k 20 kat daha g\u00fc\u00e7l\u00fcd\u00fcr. Niasinamidden 138 kat ve etil viologenden 20 kat daha g\u00fc\u00e7l\u00fcd\u00fcr. Tirozinaz inhibisyonu i\u00e7in s\u0131kl\u0131kla bir \u00f6l\u00e7\u00fct olarak kullan\u0131lan tretinoin, glisirizinden yaln\u0131zca 1% kadar g\u00fc\u00e7l\u00fcd\u00fcr.<\/p>\n<p>Buna ek olarak, glisirizin serbest oksijen \u00f6nleyici bir etkiye sahiptir. Serbest oksijen, sitokinlerin uyar\u0131lmas\u0131nda, melanin \u00f6nc\u00fcllerinin \u00fcretiminde ve nihayetinde melanin \u00fcretiminde \u00f6nemli bir rol oynar. Bu nedenle C vitamini ve astaksantin gibi pek \u00e7ok antioksidan bile\u015fen beyazlat\u0131c\u0131 etkiye sahiptir. In vitro testlerde [8], fotoglikozidin serbest oksijen \u00fczerinde g\u00fc\u00e7l\u00fc bir s\u00fcp\u00fcr\u00fcc\u00fc etkiye sahip oldu\u011fu bulunmu\u015ftur. Bu, melanin \u00fcretim s\u00fcrecinde ihtiya\u00e7 duyulan serbest oksijeni s\u00f6nd\u00fcrerek melanin sentezini daha da azalt\u0131r.<\/p>\n<p>Tek bir bile\u015fen olarak Mitigandrin, sitokin inhibisyonu, tirozinaz aktivitesi inhibisyonu ve anti-serbest oksijenin \u00e7oklu beyazlatma yollar\u0131n\u0131 ba\u015farabilir. Bu nedenle, hafif glisirizin tek ba\u015f\u0131na iyi bir beyazlatma etkisine sahiptir. \u0130nsanlarda yap\u0131lan testlerde, Photoglycyrrhizine'in yedi g\u00fcnl\u00fck s\u00fcrekli kullan\u0131m\u0131ndan sonra cildin beyazl\u0131\u011f\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde iyile\u015fmi\u015f ve sekiz haftal\u0131k s\u00fcrekli kullan\u0131mdan sonra cilt \u00f6nemli \u00f6l\u00e7\u00fcde daha beyaz hale gelmi\u015ftir (sadece test sonu\u00e7lar\u0131n\u0131 temsil eder, ger\u00e7ek etki ki\u015fiden ki\u015fiye de\u011fi\u015fir).<\/p>\n<p>Ayr\u0131ca, Glisirizin taraf\u0131ndan sitokin salg\u0131lanmas\u0131n\u0131n engellenmesi de k\u0131zar\u0131kl\u0131k \u00fczerinde \u00f6nemli bir etkiye sahiptir ve 28 g\u00fcn sonra, Glisirizin kullanan t\u00fcketiciler k\u0131zar\u0131kl\u0131kta \u00f6nemli bir iyile\u015fme g\u00f6stermi\u015ftir (yaln\u0131zca test sonu\u00e7lar\u0131, ger\u00e7ek sonu\u00e7lar ki\u015fiden ki\u015fiye de\u011fi\u015febilir).<\/p>\n<p>Niasinamid pop\u00fcler bir bile\u015fen olmas\u0131na ra\u011fmen, sadece bir beyazlatma yolu vard\u0131r - melanin ta\u015f\u0131y\u0131c\u0131s\u0131n\u0131 inhibe eder - bu nedenle etkisi beyazlat\u0131c\u0131 bile\u015fenler aras\u0131nda en iyisi olarak kabul edilmez. Ayr\u0131ca, sadece melanin ge\u00e7i\u015fini engelleyebilir ve melaninin temel nedenini ele almaz, ancak sadece kas\u0131n taban\u0131ndaki melanini m\u00fch\u00fcrler, bu nedenle kullan\u0131m\u0131 kesildikten sonra siyaha geri d\u00f6ner.<\/p>\n<p>Beyazlatma konusunda, daha iyi sonu\u00e7lar elde etmek i\u00e7in yine de \u00e7e\u015fitli mekanizmalar\u0131 kapsamak gerekir. Elbette, cildiniz hassassa veya sadece tek bir bile\u015fen kullanmak istiyorsan\u0131z, Fotoglikozid'i deneyebilirsiniz. Anti-serbest oksijen, sitokin inhibisyonu ve tirozinaz aktivitesi inhibisyonunun \u00e7oklu beyazlatma yollar\u0131n\u0131 kapsar. Daha da de\u011ferli olan \u015fey, sadece nazik ve tahri\u015f edici olmamas\u0131 de\u011fil, ayn\u0131 zamanda cilt hassasiyetinin neden oldu\u011fu k\u0131zar\u0131kl\u0131\u011f\u0131 onarmas\u0131 ve tolerans olu\u015fturmaya gerek olmamas\u0131d\u0131r, bu nedenle hassas ciltler i\u00e7in tercih edilen beyazlat\u0131c\u0131 bile\u015fen oldu\u011fu s\u00f6ylenebilir.<\/p>\n<p><!-- lc-commercial-start --><\/p>\n<h2>Teknik al\u0131c\u0131lar bu kimyasal konuyu genellikle nas\u0131l de\u011ferlendirir?<\/h2>\n<p>Genel kimyasal kararlar, ekipler teoriden uygulamaya ge\u00e7i\u015f yapt\u0131\u011f\u0131nda genellikle daha net hale gelir: malzemenin ne yapmas\u0131 gerekti\u011fi, ne kadar saf olmas\u0131 gerekti\u011fi, ger\u00e7ek s\u00fcre\u00e7te nas\u0131l davrand\u0131\u011f\u0131 ve hangi sonraki a\u015fama k\u0131s\u0131tlamalar\u0131n\u0131 kar\u015f\u0131lamas\u0131 gerekti\u011fi gibi konular ele al\u0131n\u0131r.<\/p>\n<ul>\n<li><strong>\u00d6ncelikle kullan\u0131m senaryosunu tan\u0131mlay\u0131n:<\/strong> Laboratuvar uygulamalar\u0131 ve end\u00fcstriyel sat\u0131n almalar genellikle farkl\u0131 d\u00fczeylerde teknik \u00f6zellik detay\u0131na ihtiya\u00e7 duyar.<\/li>\n<li><strong>\u0130\u015flem uyumlulu\u011funu kontrol edin:<\/strong> Bir malzemenin kullan\u0131m\u0131n\u0131n pratik olup olmad\u0131\u011f\u0131n\u0131 belirleyen fakt\u00f6rler genellikle i\u015fleme, kar\u0131\u015ft\u0131rma, stabilite ve sonraki a\u015famalardaki etkile\u015fimlerdir.<\/li>\n<li><strong>Depolama ve ta\u015f\u0131ma davran\u0131\u015flar\u0131n\u0131 inceleyin:<\/strong> Raf \u00f6mr\u00fc, neme duyarl\u0131l\u0131k, s\u0131cakl\u0131k aral\u0131\u011f\u0131 ve ambalajlama ticari a\u00e7\u0131dan \u00f6nemli olabilir.<\/li>\n<li><strong>Uygulama kritik \u00f6neme sahip oldu\u011funda \u00f6rnek do\u011frulama kullan\u0131n:<\/strong> K\u00fc\u00e7\u00fck \u00f6l\u00e7ekli do\u011frulama, tam bir sat\u0131n alma karar\u0131 verilmeden \u00f6nce genellikle en fazla zaman kazand\u0131ran y\u00f6ntemdir.<\/li>\n<\/ul>\n<h3>\u00d6nerilen \u00fcr\u00fcn referanslar\u0131<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/tr\/product\/chlumiao-1010-cas-6683-19-8\/\">CHLUM\u0130AO 1010<\/a>:<\/strong> Uzun vadeli termal stabilite i\u00e7in yayg\u0131n olarak kullan\u0131lan birincil antioksidan \u00f6l\u00e7\u00fct\u00fcd\u00fcr.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/tr\/product\/chlumiao-168-cas-31570-04-4\/\">CHLUM\u0130AO 168<\/a>:<\/strong> Hidroperoksit kontrol\u00fcn\u00fcn \u00f6nemli oldu\u011fu durumlarda pratik bir proses istikrar\u0131 referans\u0131.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/tr\/product\/beta-amylase-cas-9000-91-3\/\">Longzyme Beta-Amilaz<\/a>:<\/strong> Ni\u015fasta d\u00f6n\u00fc\u015f\u00fcm\u00fc ve g\u0131da i\u015fleme faaliyetleri incelenirken kullan\u0131labilecek pratik bir enzim referans kayna\u011f\u0131.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/tr\/product\/compound-glucoamylase-cas-9032-08-0\/\">Longzyme Bile\u015fik Glukoamilaz<\/a>:<\/strong> \u015eekerle\u015ftirme veya ilgili i\u015flem performans\u0131n\u0131n \u00f6nemli oldu\u011fu durumlarda yararl\u0131 bir enzim referans\u0131.<\/li>\n<\/ul>\n<h3>Al\u0131c\u0131lar ve form\u00fclat\u00f6rler i\u00e7in SSS<\/h3>\n<p><strong>Ka\u011f\u0131t \u00fczerinde do\u011fru g\u00f6r\u00fcnen bir malzeme neden kullan\u0131mda yine de d\u00fc\u015f\u00fck performans g\u00f6sterebilir?<\/strong><br \/>\u00c7\u00fcnk\u00fc ger\u00e7ek d\u00fcnya proses ko\u015fullar\u0131, substrat etkile\u015fimi ve depolama davran\u0131\u015f\u0131, basitle\u015ftirilmi\u015f bir spesifikasyon incelemesinde a\u00e7\u0131k\u00e7a g\u00f6r\u00fclmeyen sorunlar\u0131 ortaya \u00e7\u0131karabilir.<\/p>\n<p><strong>Teknik kimyasal se\u00e7iminde her zaman en d\u00fc\u015f\u00fck maliyetli se\u00e7enekle mi ba\u015flanmal\u0131d\u0131r?<\/strong><br \/>Genellikle de\u011fil. Proses uyumlulu\u011fu, istikrar ve nihai kalite dikkate al\u0131nd\u0131\u011f\u0131nda, en d\u00fc\u015f\u00fck sat\u0131n alma fiyat\u0131 her zaman en d\u00fc\u015f\u00fck kullan\u0131m maliyeti anlam\u0131na gelmez.<\/p>\n<p><!-- lc-commercial-end --><\/p>","protected":false},"excerpt":{"rendered":"<p>Among the &#8220;whitening&#8221; ingredients, niacinamide is the cheapest, but not the most effective. In addition, niacinamide whitening access is relatively single, niacinamide alone to whiten, the effect is relatively poor.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[105],"tags":[],"class_list":["post-6283","post","type-post","status-publish","format-standard","hentry","category-medicine-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Niacinamide is touted to be so amazing, why does many people use it for months with no results at all? - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"Among the &quot;whitening&quot; ingredients, niacinamide is the cheapest, but not the most effective. 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