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The journal of obstetrics and gynaecology research 1999
Watson CL, Mahe MM, Mnera J, et al
Yes, research has shown that vitamin C works well and can be used with other beneficial ingredients including niacinamide, retinol, peptides (except copper peptides, which Paulas Choice does not use) and exfoliating acids
Quality Control for Research Peptides Research peptides face unique quality control challenges due to their lack of standardized manufacturing requirements
