Questions sur COSRX Sérum de Vitamine C 13 20ml

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Q1: Who is the COSRX Vitamin C 13 Serum best for?

A: It suits most skin types, including sensitive skin, and is especially nice for dull, uneven, or dark-spot-prone skin that wants gentle brightening, or for anyone easing into pure vitamin C.

Q2: Will it sting or tingle?

A: Pure vitamin C can cause a mild tingle, especially on sensitive skin. Patch test first, introduce it slowly, and follow with moisturizer if needed. At 13%, it is gentler than a high-percentage formula.

Q3: Does it have a scent?

A: It is fragrance-free with no added fragrance. Pure vitamin C has a slightly coppery natural scent, but no artificial fragrance is added.

Q4: Why should I keep it in the fridge?

A: Pure vitamin C oxidises over time, turning darker and less effective. Storing it upright in the fridge and using it within about two months of opening helps keep it fresh and potent.

Q5: Can I use it in the morning?

A: Yes, morning or evening. If you use it in the morning, always follow with an SPF 30 or higher sunscreen. Avoid using it at the same time as copper peptide products.

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