Can I use Heartleaf (Houttuynia) and Niacinamide (B3) together?
Can you use Heartleaf (Houttuynia) and Niacinamide (B3) together?
✅ Fine together
Heartleaf (Houttuynia) guide → · Niacinamide (B3) guide →
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Can you use vitamin C and niacinamide together?
Yes, current understanding is that vitamin C and niacinamide can be used together safely, and many Korean formulas combine them. The old warning that they cancel out is largely outdated. If your skin is sensitive, you can still apply them at different times of day to be cautious.
What does niacinamide do?
Niacinamide is a form of vitamin B3 widely used in Korean skincare to help brighten the look of dullness, refine the appearance of pores and support the skin barrier. It's gentle, well tolerated by most skin types and pairs easily with many other ingredients.
What is heartleaf in Korean skincare?
Heartleaf, or Houttuynia cordata (어성초 in Korean), is a trending calming extract used in K-beauty to soothe and help balance oily, blemish-prone skin. It's found in lightweight toners and essences and pairs well with centella, niacinamide or BHA for troubled skin.
✍️ Written & reviewed by the KoreaPlus Editorial team — dermatologist-informed, cosmetic-science researched & source-cited. Last reviewed 2026-06-21.
General educational information using cosmetic structure-function wording — not medical advice. Always patch-test new actives. © KoreaPlus.