The main substance that can help, by reducing oxidative damage regardless of the pathophysiology of damage, is naturally occurring glutathione
A food-first approach for glutathione support focuses on adequate protein intake (for cysteine, glycine, and glutamic acid), abundant fruits and vegetables (for direct glutathione and vitamin C), and regular intake of cruciferous vegetables (for Nrf2 activation)
Plus, using a product with active ingredients like AHAs or retinol will cause your skin to be more sensitive to the sun, so its even more important
[PubMed] [CrossRef] [Google Scholar] Snowdon D.A., Phillips R.L., Fraser G.E
First, what exactly is a B12 shot