▪️Bravo B, Correia P, Gonçalves Junior JE, Sant'Anna B, Kerob D. Benefits of topical hyaluronic acid for skin quality and signs of skin aging: From literature review to clinical evidence. Dermatol Ther. 2022 Dec;35(12):e15903.
▪️Boo YC. Ascorbic Acid (Vitamin C) as a Cosmeceutical to Increase Dermal Collagen for Skin Antiaging Purposes: Emerging Combination Therapies. Antioxidants (Basel). 2022 Aug 26;11(9):1663.
▪️Bukhari SNA, Roswandi NL, Waqas M, Habib H, Hussain F, Khan S, Sohail M, Ramli NA, Thu HE, Hussain Z. Hyaluronic acid, a promising skin rejuvenating biomedicine: A review of recent updates and pre-clinical and clinical investigations on cosmetic and nutricosmetic effects. Int J Biol Macromol. 2018 Dec;120(Pt B):1682-1695.
▪️Chylińska N, Maciejczyk M. Hyaluronic Acid and Skin: Its Role in Aging and Wound-Healing Processes. Gels. 2025 Apr 9;11(4):281.
▪️de Miranda RB, Weimer P, Rossi RC. Effects of hydrolyzed collagen supplementation on skin aging: a systematic review and meta-analysis. Int J Dermatol. 2021 Dec;60(12):1449-1461.
▪️Hexsel D, Zague V, Schunck M, Siega C, Camozzato FO, Oesser S. Oral supplementation with specific bioactive collagen peptides improves nail growth and reduces symptoms of brittle nails. J Cosmet Dermatol. 2017 Dec;16(4):520-526.
▪️Lee M et al. Oral intake of collagen peptide NS improves hydration, elasticity, desquamation, and wrinkling in human skin: a randomized, double-blinded, placebo-controlled study. Food & Function. 2023;14:3196–3207.
▪️Michelotti A, Cestone E, De Ponti I, Pisati M, Sparta E, Tursi F. Oral intake of a new full-spectrum hyaluronan improves skin profilometry and ageing: a randomized, double-blind, placebo-controlled clinical trial. Eur J Dermatol. 2021 Dec 1;31(6):798-805.
▪️Muzumdar S, Ferenczi K. Nutrition and youthful skin. Clin Dermatol. 2021 Sep-Oct;39(5):796-808.
▪️Myung SK, Park Y. Effects of Collagen Supplements on Skin Aging: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Am J Med. 2025 Sep;138(9):1264-1277.
▪️Proksch E, Schunck M, Zague V, Segger D, Degwert J, Oesser S. Oral intake of specific bioactive collagen peptides reduces skin wrinkles and increases dermal matrix synthesis. Skin Pharmacol Physiol. 2014;27(3):113-9.
▪️Proksch E, Zdzieblik D, Oesser S. The Oral Intake of Specific Bovine-Derived Bioactive Collagen Peptides Has a Stimulatory Effect on Dermal Matrix Synthesis and Improves Various Clinical Skin Parameters. Cosmetics. 2025; 12(2):79.
▪️Pu SY, Huang YL, Pu CM, Kang YN, Hoang KD, Chen KH, Chen C. Effects of Oral Collagen for Skin Anti-Aging: A Systematic Review and Meta-Analysis. Nutrients. 2023 Apr 26;15(9):2080.
▪️Rahman A, Rehmani R, Pirvu DG, Huang SM, Puri S, Arcos M. Unlocking the Therapeutic Potential of Marine Collagen: A Scientific Exploration for Delaying Skin Aging. Mar Drugs. 2024 Mar 30;22(4):159.
▪️Reglamento (UE) 432/2012.
▪️Schunck M, Zague V, Oesser S, Proksch E. Dietary Supplementation with Specific Collagen Peptides Has a Body Mass Index-Dependent Beneficial Effect on Cellulite Morphology. J Med Food. 2015 Dec;18(12):1340-8.
▪️Yang Q, Li H, Zhang H, Ma L, Zhang X, Wu J. Effectiveness of dietary supplements for skin photoaging in healthy adults: a systematic review and meta-analysis of randomized controlled trials. Front Med (Lausanne). 2025 Jul 21;12:1582946.
▪️Žmitek K, Žmitek J, Hristov H, Rogl Butina M, Keršmanc P, Pogačnik T. The Effects of Dietary Supplementation with Collagen and Vitamin C and Their Combination with Hyaluronic Acid on Skin Density, Texture and Other Parameters: A Randomised, Double-Blind, Placebo-Controlled Trial. Nutrients. 2024 Jun 17;16(12):1908.