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Pineal gland regulation: The tetrapeptide modulates melatonin synthesis in the pineal gland, potentially restoring age-related declines in melatonin production that contribute to disrupted circadian rhythms and reduced antioxidant defense
It does this by interacting with NMDA receptors (cells in your brain) and the hypothalamic-pituitary-adrenal (HPA) axis (essentially your bodys stress response system)
Neither is inherently superior choose the texture you will actually use consistently, since adherence over months drives results more than any single formulation detail
It functions as a pH adjuster to help neutralize acidic ingredients and set a formula's pH to the right spot
Tripeptide Wound Healing & ECM Remodelling Review (Med Sci, 2025) A comprehensive 2025 review of tripeptides in wound healing and skin regeneration confirmed GHK-Cu as the most studied tripeptide in the context of wound repair and scar minimisation
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