Jikken Dobutsu 39 (2), 263267
It is a systemic input that improves the underlying biology supporting hair growth: protein synthesis, tissue repair, sleep quality (which influences hair growth cycles), and the anabolic state that supports anagen phase maintenance
But if you want to get more in-depth information, then running the tests I listed above is probably a good idea as well
Proper Usage: Before administering TB-500 nasal spray, carefully read and follow the instructions provided by the supplier
Research & Education Tool Vitamin B12 Injection Dosage Calculator Enter the vial amount, diluent volume, and target amount to estimate concentration, draw volume on a 1 mL U-100 syringe, and approximate vial yield