Melanotan II Purported Benefits: Skin tanning without UV exposure Potential libido enhancement Potential Risks and Complications: Increased Risk of Melanoma: Stimulating melanin production can promote the development of skin cancers
At the same time 32% of those studied experienced adverse events, including liver dysfunction and one case of anaphylaxis (Alzahrani et al., Cureus 2025, PMID 40013212)
Berberine and resistant starch, the two strongest ingredients, have legitimate research behind them
Some participants reported diarrhea, constipation, stomach discomfort, or occasional vomiting
The role of glutathione as a skin whitener was discovered as a side effect of large doses of glutathione
Tretinoin 0.1% promotes 21% increase in dermal collagen fiber organization after 6 months (histologically confirmed)