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The result is a dynamic ingredient that has been shown to promote skin healing, stimulate collagen production, and reduce the appearance of fine lines and wrinkles
Journal of Physiology and Pharmacology

Sources WebMD: Collagen Peptides Uses, Side Effects, and More JDD: Oral Collagen Supplementation: A Systematic Review of Dermatological Applications NIH: Emerging Use of BPC-157 in Orthopaedic Sports Medicine: A Systematic Review NIH: Prolonged stimulation of growth hormone (GH) and insulin-like growth factor I secretion by CJC-1295, a long-acting analog of GH-releasing hormone, in healthy adults PubMed: Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data NIH: Matrixyl Patch vs Matrixyl Cream: A Comparative In Vivo Investigation of Matrixyl (MTI) Effect on Wound Healing PubMed: Investigating the effects of Argireline in a skin serum containing hyaluronic acids on skin surface wrinkles using the Visia Complexion Analysis camera system for objective skin analysis PubMed: Utilizing Developmentally Essential Secreted Peptides Such as Thymosin Beta-4 to Remind the Adult Organs of Their Embryonic StateNew Directions in Anti-Aging Regenerative Therapies International Journal of Molecular Sciences: Bioactive Peptides: Synthesis, Sources, Applications, and Proposed Mechanisms of Action

du Plessis, Metal additive manufacturing in aerospace: A review, Materials & Design, Volume 209, 1 November 2021
The other forms hydroxycobalamin, adenosylcobalamin and methylcobalamin are also available as supplements but they are less stable and more expensive