Haruharu Wonder Black Rice Hyaluronic Serum vs Medik8 Crystal Retinal 6
Both are serums, but their key treatment ingredients don't overlap: Haruharu Wonder Black Rice Hyaluronic Serum is built around Niacinamide, while Medik8 Crystal Retinal 6 is built around Retinaldehyde.
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 stabilised retinaldehyde serum (0.06%) with hyaluronic acid and vitamin E, sitting between retinol and prescription tretinoin in strength. Faster-acting than retinol with good tolerability; part of a tiered ladder you climb gradually.
Which should you choose?
These do different jobs. Haruharu Wonder Black Rice Hyaluronic Serum relies on Niacinamide, while Medik8 Crystal Retinal 6 relies on Retinaldehyde. Haruharu Wonder Black Rice Hyaluronic Serum is the better fit for dullness, dryness and a damaged barrier; Medik8 Crystal Retinal 6 for fine lines, preventing sun damage and rough texture. On price, Haruharu Wonder Black Rice Hyaluronic Serum is the less expensive option (Budget versus Luxury). Haruharu Wonder Black Rice Hyaluronic Serum is flagged morning or evening; Medik8 Crystal Retinal 6 is flagged evening only.
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%
Medik8 Crystal Retinal 6 — top of the list
- Aqua~50–80%
- Caprylic/Capric…~3–10%
- Dimethicone~2–6%
- Retinal~1.5–4%
● 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 | Medik8 Crystal Retinal 6 | |
|---|---|---|
| Category | Serum | Serum |
| Price tier | Budget | Luxury |
| Best for | Dullness, Dryness, Damaged Barrier | Fine Lines, Photoaging Prevention, Rough Texture |
| Usage notes | Morning or evening | Evening only |
| Shared hero actives | Hyaluronic Acid | |
Common questions
Is the Haruharu Wonder Black Rice Hyaluronic Serum or the Medik8 Crystal Retinal 6 better?
What's the difference between the Haruharu Wonder Black Rice Hyaluronic Serum and the Medik8 Crystal Retinal 6?
Are the Haruharu Wonder Black Rice Hyaluronic Serum and Medik8 Crystal Retinal 6 dupes for each other?
Can I use the Haruharu Wonder Black Rice Hyaluronic Serum and Medik8 Crystal Retinal 6 together?
Related comparisons
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