Haruharu Wonder Black Rice Hyaluronic Serum vs The Inkey List Polyglutamic Acid Serum
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.
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.
A hydration serum using polyglutamic acid, which holds even more water than hyaluronic acid, layered with HA. A lightweight, plumping hydrator that works well over or under HA; an affordable way to trial the ingredient.
Which should you choose?
Haruharu Wonder Black Rice Hyaluronic Serum goes further with Niacinamide, which The Inkey List Polyglutamic Acid Serum doesn't have. If you only need Hyaluronic Acid, The Inkey List Polyglutamic Acid Serum 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 a damaged barrier; The Inkey List Polyglutamic Acid Serum for dehydration. Both sit in the Budget price tier.
What they share
This hero active appears in both formulas:
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%
- 1,2-Hexanediol~1–2%
- Sodium Hyaluro…~1–2%
- Hyaluronic Acid~1–2%
The Inkey List Polyglutamic Acid Serum — top of the list
- Aqua~50–80%
- Polyglutamic Ac…~3–10%
- Sodium Hyaluron…~2–6%
- Propanediol~1.5–4%
- Panthenol~1–2%
● marks ingredients that appear near the top of both lists. Percentages are positional estimates from INCI order, not disclosed doses.
The specs
| Haruharu Wonder Black Rice Hyaluronic Serum | The Inkey List Polyglutamic Acid Serum | |
|---|---|---|
| Category | Serum | Serum |
| Price tier | Budget | Budget |
| Best for | Dullness, Dryness, Damaged Barrier | Dehydration, Dullness, Dryness |
| Usage notes | Morning or evening | Morning or evening |
| Shared hero actives | Hyaluronic Acid | |
Common questions
Is the Haruharu Wonder Black Rice Hyaluronic Serum or The Inkey List Polyglutamic Acid Serum better?
What's the difference between the Haruharu Wonder Black Rice Hyaluronic Serum and The Inkey List Polyglutamic Acid Serum?
Are the Haruharu Wonder Black Rice Hyaluronic Serum and The Inkey List Polyglutamic Acid Serum dupes for each other?
Can I use the Haruharu Wonder Black Rice Hyaluronic Serum and The Inkey List Polyglutamic Acid Serum together?
Related comparisons
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