Vitamin B12 Injections are available in multiple concentrations: 0.5mg/ml, 1mg/ml, 0.5mg/2ml, and 1mg/2ml
Thank you for the convenience of doing home injections
For more details, take a look at our post on how fast a B12 shot works
Refills and Practical Planning Refill planning should reflect the injection frequency, vial type, and monitoring schedule
But the human data gap is real
The Leyden 2002 clinical evaluation in the Journal of Cosmetic Dermatology compared a copper tripeptide cream and serum against placebo in 67 women with photodamaged skin and found significant improvements in wrinkle depth, skin laxity, clarity, and density at 12 weeks [30]