If you are noticing your skin is not recovering the way it used to slower healing from cuts, more prominent wrinkles, skin that looks duller and thinner declining GHK-Cu levels are likely part of the picture
Your dose needs may change if you become pregnant, if you breastfeed, or if you eat a vegetarian diet
So maybe, a tiny bit of exfoliation, but if you want proven efficacy, stick to pure acids
Glutathione vitamin injections can help
Also, knowing how your genes affect B12 and any drug interactions is important
Severe or prolonged B12 deficiency can lead to a range of neurological manifestations, including peripheral neuropathy, which may present as pain, paraesthesia (pins and needles), or altered sensation in the extremities