Vitamin B12 injections are considered very safe, but it is important to proceed with caution
Used in research and laboratory settings to reconstitute lyophilized compounds, permitting multiple draws from the same sealed vial
Furthermore, using GHK-Cu peptide nasal spray has been found to support tissue remodelling, which has beneficial effects on the healing of ischemic open wounds, acne scars, and soft tissue repair
[PMID: 4054074] PubMed record related to this compound for laboratory literature review
However, it can be very drying and irritating for some skin types and may cause degradation of copper peptides if used together
Cysteine Misbehaves We can get a sense of why this might be by sprinkling some free cysteine on a dish of cells and watching what happens