Tretinoin
Retinoid | Skin Rejuvenation & Anti-Aging
Tretinoin is the gold standard topical retinoid for skin aging and acne, FDA-approved since 1971 for acne vulgaris and later for the treatment of photoaging (fine wrinkles, mottled hyperpigmentation, roughness). As the acid form of vitamin A, it is the most extensively studied topical anti-aging compound in dermatology, backed by decades of clinical evidence. Tretinoin accelerates epidermal cell turnover, stimulates collagen synthesis in the dermis, and improves the overall architecture of photodamaged skin. It has become a cornerstone of the biohacking and skincare optimization community due to its proven ability to reduce fine lines, even out skin tone, and improve skin texture with consistent long-term use.
Moleküler Gösterim
M.W.: 300.44 Da
PubChem 2D yapı diyagramı
Referans Flakon
Referans illüstrasyonu — ürün listesi değildir
Etki Mekanizması
Tretinoin binds to retinoic acid receptors (RARs) in the cell nucleus, specifically RAR-alpha, RAR-beta, and RAR-gamma, which form heterodimers with retinoid X receptors (RXRs). These activated receptor complexes bind to retinoic acid response elements (RAREs) in DNA, modulating the transcription of genes involved in cellular differentiation, proliferation, and apoptosis. In the epidermis, tretinoin accelerates keratinocyte turnover from the typical 28-day cycle to approximately 14-16 days, promoting the shedding of damaged surface cells and their replacement with newer, healthier cells. In the dermis, tretinoin stimulates fibroblast activity, increasing the production of procollagen I and III, fibronectin, and elastin. It also inhibits matrix metalloproteinases (MMPs) that degrade collagen, and promotes angiogenesis, improving dermal blood supply. The net result is thicker, more organized epidermis, increased dermal collagen density, and reduced fine wrinkling.
Tretinoin is the gold standard topical retinoid for skin aging and acne, FDA-approved since 1971 for acne vulgaris and later for the treatment of photoaging (fine wrinkles, mottled hyperpigmentation, roughness). As the acid form of vitamin A, it is the most extensively studied topical anti-aging compound in dermatology, backed by decades of clinical evidence. Tretinoin accelerates epidermal cell turnover, stimulates collagen synthesis in the dermis, and improves the overall architecture of photodamaged skin. It has become a cornerstone of the biohacking and skincare optimization community due to its proven ability to reduce fine lines, even out skin tone, and improve skin texture with consistent long-term use.
Moleküler Veri
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Doz Protokolleri
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| Hedef | Doz | Sıklık | Yol |
|---|---|---|---|
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Etkileşimler
GHK-Cu
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Kaynaklar
- Topical tretinoin (retinoic acid) improves photoaged skin. A double-blind vehicle-controlled study — Weiss JS, Ellis CN, Headington JT, Tincoff T, Hamilton TA, Voorhees JJ
- Tretinoin (emollient cream) for photoaging: a double-blind, vehicle-controlled, multinational study — Olsen EA, Katz HI, Levine N, Shupack J, Billys MM, Prawer S, Gold J, Stiller M, Lufrano L, Thorne EG
- Molecular mechanisms of retinoid actions in skin — Fisher GJ, Voorhees JJ
- Repair of UV-damaged dermal matrix by topical tretinoin: assessment by histological and immunohistochemical analysis — Griffiths CE, Russman AN, Majmudar G, Singer RS, Hamilton TA, Voorhees JJ
- Guidelines of care for the management of acne vulgaris — Zaenglein AL, Pathy AL, Schlosser BJ, Alikhan A, Baldwin HE, Berson DS, Bowe WP, Graber EM, Harper JC, Kang S, Keri JE, Leyden JJ, Reynolds RV, Silverberg NB, Stein Gold LF, Tollefson MM, Weiss JS, Dolan NC, Sagan AA, Stern M, Boyer KM, Bhushan R