@cosrx_my: Wait… Blue Peptide serum and Vitamin C Serum shouldn’t be used in the same routine?👀 So what’s the right way to use them? Watch the video to find out! 💙 #COSRX #BluePeptideSerum #Copperpeptide #Bakuchiol #GlowySkin

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Thursday 17 September 2026 06:21:42 GMT