Luminous B12 Injections What is a B12 injection A B12 injection is a form of supplementation where vitamin B12 is administered directly into the muscle or under the skin, bypassing Benefits of Vitamin B12 Injections for Skin B12 INJECTIONS Vitamin B12 is a nutrient that helps keep the body's nerve and blood cells healthy and helps make DNA, the genetic material in all cells. Vitamin B12 also helps B12 Injection DRIP AND DIP Vitamin B12 injections Dr Aesthetic Medicine B 12 Injections BOTOX'D BEAUTY CO.