كيف تأخرين التجاعيد باستخدام الكولاجين/اسرار تجهلها عن مكمل الجمال والشباب😍 احدث المراجع العلمية

المراجع العلمية والدراسات
1- La niacinamide topique réduit le jaunissement, les rides, les rougeurs et les taches hyperpigmentées de la peau du visage vieillissante. Bissett DL, Miyamoto K, Sun P, Li J, Berge, Californie Int J Cosmet Sci. 2004 oct; 26 (5): 231-8.
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6- Oral supplementation of specific collagen peptides has beneficial effects on human skin physiology: a double-blind, placebo-controlled study. Proksch E1, Segger D, Degwert J, Schunck M, Zague V, Oesser S. Department of Dermatology, University of Kiel, Germany.
7- effects of a nutritional supplement containing collagen peptides on skin elasticity, hydration and wrinkles Maryam Borumand,SaraSibilla
Research and Development, MINERVA Research Labs Ltd., 1 6 Yarmouth Place, London, W1J 7BU, United Kingdom