@kpharmacist_ajeossi: ✨ Copper Peptide Serum • 🟢Helps repair the skin barrier? → YES • 🔴Better than retinol? → NO • 🟢Good for skin firmness? → YES • 🟡Can you use it with vitamin C? → SOMETIMES • 🟢Good for anti-aging? → YES • 🔴Do all copper peptide serums work the same? → NO • 🟢Do I recommend it? → YES ⚠️ Copper peptides are fantastic for barrier support and skin firmness, but they don't replace retinol. Be mindful when mixing them with strong active ingredients like Vitamin C, as the overall formulation matters. #kbeauty #koreanskincare #copperpeptide #viralskincare #antiagingskincare