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What can you mix with COSRX The Vitamin C 23 Serum?

Key actives

Biggest watch-out: Retinol Yes, with timing

6 mix freely · 9 need timing · 1 need care · 0 not together. Source: INCIDecoder ingredient list; formulas change, so check your bottle.

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Reviewed by the Does It Mix editorial team, 2026-10-21. Verdicts combine our ingredient-pair verdicts for this product's key actives. We are not affiliated with this brand. Methodology.

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