Vitamin B12 is key for healthy red blood cells, nerve function, and DNA
This can improve oxygen delivery throughout the body, resulting in better stamina and overall vitality
Because it is a single compound rather than a blend, there is no multi-component composition table to break down but the mechanism is worth mapping out, because it explains why the research doses are so small and why the effect is gradual rather than acute
but some of the worse skin I have seen is when I have seen people take advice from something they have seen on IG, and just gone and spent a load of money on expensive products willy-nilly, without any advice - or they use too much and it makes their skin worse
For really bad cases, you might need more, and shots are given once a week, or as the doctor says