US$ 27.39
paulas choice vitamin c with glutathione Paula's 25% + Clinical Serum For optimal results 25% Vitamin C + Glutathione
Description
However, these trials were never published in detail in peer-reviewed journals
Patients are trained to perform these injections at home

Divide the dose 60/40 or 50/50 between morning (fasted) and evening (at least 2 hours after eating)

It is not the only possible explanation, as plateaus happen , but storage should be one of the first things you investigate