Side-by-side comparison

Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum vs Klairs Freshly Juiced Vitamin Drop

Both are serums, but their key treatment ingredients don't overlap: Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum is built around Niacinamide and Zinc, while Klairs Freshly Juiced Vitamin Drop is built around Vitamin C.

1Shared hero active
Anua
Heartleaf Quercetinol Pore-Deep Cleansing Serum
SerumBudgetMorning or evening
OilinessAcneRedness

A heartleaf-heavy serum with niacinamide, zinc PCA and fermented extracts. Positioned for oily, congested or early-acne skin — anti-inflammatory and mildly sebum-regulating without a classic BHA.

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Klairs
Freshly Juiced Vitamin Drop
SerumMid-rangeMorning only
Dark SpotsDullnesssensitiveSensitive skin

5% L-ascorbic acid with centella and botanical extracts — a lower vitamin C dose for sensitive skin. Less sting, less peak potency than 15% formulations. Good entry point for pigmentation if higher doses have failed.

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The verdict

Which should you choose?

These do different jobs. Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum relies on Niacinamide and Zinc, while Klairs Freshly Juiced Vitamin Drop relies on Vitamin C. Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum is the better fit for oiliness, acne and redness; Klairs Freshly Juiced Vitamin Drop for dark spots, dullness and sensitive skin. On price, Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum is the less expensive option (Budget versus Mid-range). Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum is flagged morning or evening; Klairs Freshly Juiced Vitamin Drop is flagged morning only.

The overlap

What they share

This hero active appears in both formulas:

Centella Asiatica
The formulation

Ingredient stacks, side by side

Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum — top of the list

  • Houttuynia Cor…~50–80%
  • Water~5–25%
  • Niacinamide~3–10%
  • 1,2-Hexanediol~2–6%
  • Butylene Glycol~1.5–4%
  • Glycerin~1–2%
  • Propanediol~1–2%
  • Zinc PCA~1–2%
  • Panthenol~1–2%
  • Hamamelis Virg…~1–2%

Klairs Freshly Juiced Vitamin Drop — top of the list

  • Water~50–80%
  • Propylene Glycol~5–25%
  • Ascorbic Acid5%
  • Ethoxydiglycol~2–6%
  • Glycerin~1.5–4%
  • Centella Asiat…~1–2%

● marks ingredients that appear near the top of both lists. Percentages are positional estimates from INCI order, not disclosed doses.

At a glance

The specs

Anua Heartleaf Quercetinol Pore-Deep Cleansing SerumKlairs Freshly Juiced Vitamin Drop
CategorySerumSerum
Price tierBudgetMid-range
Best forOiliness, Acne, RednessDark Spots, Dullness, sensitive
Usage notesMorning or eveningMorning only
Shared hero activesCentella Asiatica
Questions

Common questions

Is the Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum or the Klairs Freshly Juiced Vitamin Drop better?
They aren't trying to do the same thing, so the better one is whichever matches your goal: Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum for oiliness, acne and redness; Klairs Freshly Juiced Vitamin Drop for dark spots, dullness and sensitive skin.
What's the difference between the Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum and the Klairs Freshly Juiced Vitamin Drop?
Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum's hero actives are Niacinamide, Centella Asiatica and Zinc. Klairs Freshly Juiced Vitamin Drop's are Vitamin C and Centella Asiatica. They also sit in different price tiers (Budget versus Mid-range).
Are the Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum and Klairs Freshly Juiced Vitamin Drop dupes for each other?
No. Their key active ingredients don't overlap (Niacinamide and Zinc in Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum; Vitamin C in Klairs Freshly Juiced Vitamin Drop), so swapping one for the other changes what your routine does.
Can I use the Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum and Klairs Freshly Juiced Vitamin Drop together?
Usually, yes. Apply the thinner texture first, then the thicker one, and patch-test when introducing anything new.
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1 shared hero active

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