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This acidity helps maintain the balance of the skins natural oils and protect it from harmful bacteria.35 Because of this, experts recommend using topicals with a more acidic pH, as alkaline products may negatively impact your skins health.36 37 Since The Ordinary Multi-Peptide + Copper Peptides 1% Serum is at least a little acidic, it should be okay for most people, but this may explain why some customers complain about poor skin reactions after using it

The initial conductivity (C initial ) of the solution was measured with a conductivity meter (model 32

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To top it off, it is carcinogenic and damaging to your DNA

Contamination prevention: Always use a new sterile needle when accessing the vial

PMID: 22354407