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KPV is a tripeptide made of lysine, proline, and valine, corresponding to the C-terminal segment of alpha-melanocyte-stimulating hormone (-MSH)
How exactly vitamin B can worsen acne was recently investigated in a special study (5)
Stareini, P
Gatta M, Dovizio M, Milillo C, Ruggieri AG, Sallese M, Antonucci I, et al
But it does require following a specific sequence to protect the peptide from damage
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