Side-by-side comparison

Haruharu Wonder Black Rice Hyaluronic Serum vs The Ordinary Marine Hyaluronics

Both serums contain Hyaluronic Acid, but only Haruharu Wonder Black Rice Hyaluronic Serum adds a targeted active: Niacinamide. That's the main thing to weigh.

1Shared hero active
Haruharu Wonder
SerumBudgetMorning or evening
DullnessDrynessDamaged Barrier

Fermented black rice extract with niacinamide and hyaluronic acid. Antioxidant-leaning hydrator rather than a targeted active — a good 'daily vegetable' layer under stronger serums.

The Ordinary
SerumBudgetMorning or evening
DehydrationOilinessDullness

An ultra-light hydrating serum using marine-derived humectants instead of classic hyaluronic acid, for a weightless, almost water-like feel. A good layering hydrator for oily skin that finds HA serums tacky.

The verdict

Which should you choose?

Haruharu Wonder Black Rice Hyaluronic Serum goes further with Niacinamide, which The Ordinary Marine Hyaluronics doesn't have. If you only need Hyaluronic Acid, The Ordinary Marine Hyaluronics covers it; if you want Niacinamide as well, choose Haruharu Wonder Black Rice Hyaluronic Serum. Haruharu Wonder Black Rice Hyaluronic Serum is the better fit for dryness and a damaged barrier; The Ordinary Marine Hyaluronics for dehydration and oiliness. Both sit in the Budget price tier.

The overlap

What they share

This hero active appears in both formulas:

Hyaluronic Acid
The formulation

Ingredient stacks, side by side

Haruharu Wonder Black Rice Hyaluronic Serum — top of the list

  • Oryza Sativa (…~50–80%
  • Water~5–25%
  • Butylene Glycol~3–10%
  • Niacinamide~2–6%
  • Bambusa Vulgar…~1.5–4%
  • Dipropylene Gl…~1–2%
  • Glycerin~1–2%
  • 1,2-Hexanediol~1–2%
  • Sodium Hyaluro…~1–2%
  • Hyaluronic Acid~1–2%

The Ordinary Marine Hyaluronics — top of the list

  • Aqua~50–80%
  • Glycerin~5–25%
  • Propanediol~3–10%
  • Amino Esters-1~2–6%
  • Sodium Hyaluron…~1.5–4%

● 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

Haruharu Wonder Black Rice Hyaluronic SerumThe Ordinary Marine Hyaluronics
CategorySerumSerum
Price tierBudgetBudget
Best forDullness, Dryness, Damaged BarrierDehydration, Oiliness, Dullness
Usage notesMorning or eveningMorning or evening
Shared hero activesHyaluronic Acid
Questions

Common questions

Is the Haruharu Wonder Black Rice Hyaluronic Serum or The Ordinary Marine Hyaluronics better?
It depends on whether you want Niacinamide. Haruharu Wonder Black Rice Hyaluronic Serum has it; The Ordinary Marine Hyaluronics doesn't. Otherwise both rely on Hyaluronic Acid.
What's the difference between the Haruharu Wonder Black Rice Hyaluronic Serum and The Ordinary Marine Hyaluronics?
Haruharu Wonder Black Rice Hyaluronic Serum's hero actives are Niacinamide and Hyaluronic Acid. The Ordinary Marine Hyaluronics's are Marine Humectants and Hyaluronic Acid.
Are the Haruharu Wonder Black Rice Hyaluronic Serum and The Ordinary Marine Hyaluronics dupes for each other?
Only partly. They share Hyaluronic Acid, but Haruharu Wonder Black Rice Hyaluronic Serum's Niacinamide has no counterpart in The Ordinary Marine Hyaluronics.
Can I use the Haruharu Wonder Black Rice Hyaluronic Serum and The Ordinary Marine Hyaluronics together?
Usually, yes. Apply the thinner texture first, then the thicker one, and patch-test when introducing anything new.
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