It is not intended for human or animal consumption and must not be used as a medicine, therapeutic product, supplement, food product or cosmetic.
For detailed information about glutathione's effects and considerations, particularly regarding skin applications, you can review the medical literature: Glutathione as a skin whitening agent: Facts, myths, evidence, and controversies
If you want to speed the process, gently roll the vial between your palms or rock it side to side
Vitamin C boosts immunity, supports collagen production, and helps absorb iron
Ive written a blog post on Niacinamide before
However, like any medical treatment, it should be performed after proper consultation and evaluation