Wear for at least 4 hours (longer wear optional)
This means the B12 component in a compounded semaglutide formulation is most likely to help patients who are deficient or at risk of deficiency, those eating very little, those following plant-based diets, older adults whose B12 absorption decreases with age, or those with conditions affecting B12 absorption like gastric bypass or certain GI conditions
The 2024 Cureus systematic review by Jaiswal and Jawade reaches the same conclusions across more than 60 cited studies: the wound-healing cascade and the delivery enhancement are two separable mechanisms, and which one dominates depends on needle depth, needle architecture, and how the serum is introduced [1]
A 2003 study by Staresinic et al
For systemic recovery, SubQ injections in the abdominal fat are standard
GHK-Cu effects on skin and hair build gradually over the cycle