However, the strength of effects, ideal dosing, and long-term outcomes are not fully established for general consumer use, and clinical standards vary by region
Sixteen studies were included in the quantitative synthesis, comprising a total of 6,098 participants
Despite the benzyl alcohol preservative, improper handling can introduce bacteria or other microorganisms that may overwhelm the preservative's protective capacity
However, if B12 deficiency coexists with androgenetic alopecia (genetic pattern loss), fixing B12 will improve hair quality and reduce excess shedding but won't fully reverse the pattern-driven thinning
This is because it actually vaporizes tissue, thereby removing old, damaged skin and allowing for new collagen formation