melanotan cream II (“Tan Jabs”): Why They're Not Worth The Risk What Is the 'Barbie Peptide'

Blood 128 , 265276 (2016)

Glutathione Side Effects on Skin and Hair The use of glutathione for skin and hair benefits should be approached with caution, as side effects may occur: Skin Discoloration : Excessive use of glutathione for skin lightening can lead to uneven skin tone, with some areas becoming lighter than others

Those findings are not necessarily contradictory

But you can use a face wash and toner before your vitamin C serum

Product documentation generally includes peptide content, CAS number, molecular formula, molecular weight, and confirmation of analytical testing, supporting batchtobatch reproducibility for laboratory protocols