Vithamine C lihlahisoa tsa skincare: hobaneng e tumme hakaale?

1, melemo ea botle ba vithamine C:
1) Antioxidant
Ha letlalo le hlohlelletsoa ke ho pepeseha ha letsatsi (mahlaseli a ultraviolet) kapa litšila tsa tikoloho, palo e kholo ea li-radicals tsa mahala e hlahisoa. Letlalo le itšetlehile ka tsamaiso e rarahaneng ea li-enzyme le li-antioxidant tse se nang li-enzyme ho itšireletsa tšenyo ea li-radical mahala.
VC ke antioxidant e ngata ka ho fetisisa letlalong la motho, e sebelisa sebopeho sa eona se nang le oxidizable ho nkela lintho tse ling sebaka le ho li sireletsa ho tsoa ho oxidation. Ka mantsoe a mang, VC e itela ho fokotsa le ho felisa li-radicals tsa mahala, kahoo e sireletsa letlalo.

2) Thibela tlhahiso ea melanin
VC le lihlahisoa tsa eona li ka kena-kenana le tyrosinase, tsa fokotsa sekhahla sa phetoho ea tyrosinase, le ho fokotsa tlhahiso ea melanin. Ntle le ho thibela tyrosinase, VC e ka boela ea sebetsa e le moemeli oa ho fokotsa melanin le sehlahisoa se bohareng sa melanin synthesis, dopaquinone, ho fokotsa botšo ho ba bo se nang mebala le ho finyella liphello tse tšoeu. Vithamine C ke ntho e sireletsehileng le e sebetsang e soeufatsang letlalo.

3) Setlolo se sireletsang letlalo letsatsing

VC e kenya letsoho ho hlahisoeng ha collagen le mucopolysaccharides, e khothalletsa pholiso ea maqeba, e thibela ho chesoa ke letsatsi, 'me e qoba sequelae e siiloeng ke khanya e feteletseng ea letsatsi. Ka nako e ts'oanang, vithamine C e na le thepa e babatsehang ea antioxidant 'me e khona ho tšoara le ho fokotsa li-radicals mahala letlalong, ho thibela tšenyo e bakoang ke mahlaseli a ultraviolet. Ka hona, vithamine C e bitsoa "intradermal sunscreen". Le hoja e ke ke ea monya kapa ea thibela mahlaseli a ultraviolet, e ka hlahisa phello e sireletsang khahlanong le tšenyo ea ultraviolet e dermis. Tšireletso ea letsatsi ea ho eketsa VC e thehiloe ka saense ~

4) Khothalletsa tlhahiso ea collagen

Ho lahleheloa ke collagen le elastin ho ka etsa hore letlalo la rona le fokotsehe 'me le be le liketsahalo tsa botsofali tse kang mela e metle.

Phapang e kholo lipakeng tsa collagen le protheine e tloaelehileng ke hore e na le hydroxyproline le hydroxylysine. Tlhahiso ea li-amino acid tsena tse peli e hloka ho kenya letsoho ha vithamine C.
Hydroxylation ea proline nakong ea tlhahiso ea collagen e hloka ho kenya letsoho ha vithamine C, kahoo khaello ea vithamine C e thibela motsoako o tloaelehileng oa collagen, e leng se lebisang ho mathata a khokahanyo ea lisele.

5) Ho lokisa mekoallo e senyehileng ho khothalletsa pholiso ea maqeba

Vithamine C e ka khothaletsa phapang ea li-keratinocyte, ea susumetsa ts'ebetso ea thibelo ea epidermal, le ho thusa ho tsosolosa lera la epidermal. Kahoo vithamine C e na le phello e ntle haholo letlalong la letlalo.

Ke ka lebaka lena le leng la matšoao a ho hloka limatlafatsi tsena e leng ho fola ha maqeba hampe.

6) Anti inflammatory

Vithamine C e boetse e na le litlamorao tse ntle tsa antibacterial le anti-inflammatory, tse ka fokotsang ts'ebetso ea transcription factor ea li-cytokine tse fapaneng tse ruruhileng. Ka hona, vithamine C e atisa ho sebelisoa ke dermatologists ho phekola mafu a letlalo a ho ruruha a kang makhopho.

2, Mefuta e fapaneng ea vithamine C ke efe?
Vithamine C e hloekileng e bitsoa L-ascorbic acid (L-AA). Ena ke mofuta o sebetsang ka ho fetesisa oa baeloji le o ithutoang haholo oa vithamine C. Leha ho le joalo, mofuta ona o oxidize ka potlako mme o fetoha o sa sebetseng tlasa moea, mocheso, khanya, kapa maemo a pH a feteletseng. Bo-rasaense ba ile ba tsitsisa L-AA ka ho e kopanya le vithamine E le ferulic acid bakeng sa tšebeliso ea litlolo. Ho na le mefuta e meng e mengata ea vithamine C, ho kenyelletsa 3-0 ethyl ascorbic acid, ascorbate glucoside, magnesium le sodium ascorbate phosphate, tetrahexyl decanol ascorbate, ascorbate tetraisopropylpalmitate, le ascorbate palmitate. Lintho tsena tse nkiloeng ha li na vithamine C e hloekileng, empa li fetotsoe ho matlafatsa botsitso le mamello ea limolek'hule tsa ascorbic acid. Mabapi le ts'ebetso, tse ngata tsa liforomo tsena li na le lintlha tse hanyetsanang kapa li hloka lipatlisiso tse ling ho netefatsa katleho ea tsona. L-ascorbic acid, tetrahexyl decanol ascorbate, le ascorbate tetraisopalmitate e tsitsitseng ka vithamine E le ferulic acid li na le boitsebiso bo bongata bo tšehetsang tšebeliso ea tsona.