Side-by-side comparison

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

Both are serums. They share a 66% active-ingredient overlap, so the real decision is about price, texture and the supporting ingredients. Here's the side-by-side.

66%Active overlap
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?

On price, the Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum sits in the Budget tier versus Mid-range for the Klairs — so it's the more budget-led pick if the overlap is what you're after. On how you'd use them, the Anua is flagged Morning or evening while the Klairs is flagged Morning only. The Anua leans toward Acne, Oiliness, Redness. The Klairs leans toward Dark Spots, Dullness, sensitive.

The overlap

What they share

At 66% active overlap, these are the ingredients doing comparable work in both formulas:

Centella Asiatica
The formulation

Ingredient stacks, side by side

Anua — 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 — 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

AnuaKlairs
CategorySerumSerum
Price tierBudgetMid-range
Best forOiliness, Acne, RednessDark Spots, Dullness, sensitive
Usage notesMorning or eveningMorning only
Active overlap66% — Centella Asiatica
Questions

Common questions

Is the Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum or the Klairs Freshly Juiced Vitamin Drop better?
Neither is universally better — they share 66% active-ingredient overlap, so for the actives that drive results they're close. The Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum is the more budget-friendly option, while the other may differ on texture, finish and supporting ingredients. Pick based on your skin's priorities rather than a single 'winner'.
What's the difference between the Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum and the Klairs Freshly Juiced Vitamin Drop?
Both are serums that share Centella Asiatica. Where they differ: they sit in different price tiers (Budget vs Mid-range); the Anua is Morning or evening; the Klairs is Morning only; the Anua targets Acne, Oiliness; the Klairs targets Dark Spots, Dullness.
Are the Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum and Klairs Freshly Juiced Vitamin Drop dupes for each other?
They share 66% active-ingredient overlap based on published INCI lists, so one can stand in for the other on the actives that matter — chiefly Centella Asiatica. A dupe matches the hero actives, not the full sensory experience, so expect differences in texture, fragrance and exact concentrations.
Can I use the Anua Heartleaf Quercetinol Pore-Deep Cleansing Serum and Klairs Freshly Juiced Vitamin Drop together?
They both fill the serum slot in a routine, so you'd normally pick one rather than layer both. If you want to use both, treat one as your daytime option and the other for evening, and patch-test when introducing anything new.
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66% overlap

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