glutathione the ordinary Advanced Pore Minimizing & Skin Tone Corrective Serum With 10% Niacinamide + 1% silicone or oil. The Ordinary The Bright Set,

From the copper peptide for skin research that has generated multiple positive human clinical trials, to emerging data on GHK-Cu injection protocols for systemic anti-aging applications, the compound represents a convergence of cosmeceutical, regenerative, and longevity science that is increasingly difficult to ignore

doi:10.1186/s12958-018-0432-0

Studies using rat models with transected Achilles tendons showed BPC-157 treatment resulted in accelerated recovery with increased load to failure, superior Achilles Functional Index scores, enhanced mononuclear cell infiltration, improved collagen fiber organization, and smaller persistent defects compared to untreated controls

To maximize absorption, I suggest going with a liposomal vitamin C liquid

Semin Liver Dis 18:415424 Atkuri KR, Mantovani JJ, Herzenberg LA, Herzenberg LA (2007) N-Acetylcysteinea safe antidote for cysteine/glutathione deficiency