Its a growth hormone peptide, and it works on a different system than the one that makes testosterone
The clinical relevance of the mechanism in humans has yet to be assessed
These manifest experimental design flaws (e.g., inadequate sample size, suboptimal blinding, insufficient endpoint indicators, significant regional variations, and short follow-up periods), lax quality control, and lack of collaborative mechanisms, substantially diminishing the evidence level
Glutathiones role in skin whitening lies in its ability to inhibit the enzyme tyrosinase
Melasma is generally considered a chronic condition, meaning it can be managed but may return