Haruharu Wonder

Black Rice Hyaluronic Serum

SerumBudgetMorning or evening
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.

What this is good for

✓ Great forDullnessDrynessDamaged Barrier

Ingredient stack

Each ingredient is listed in descending concentration. Above the 1% line the order is regulated — below it, brands can list in any order.

Ingredients above the dashed gold line are dosed above 1% (the regulatory threshold) — these are what the formulation is really built on.

~50–80%Oryza Sativa (…
~5–25%Water
~3–10%Butylene Glycol
~2–6%Niacinamide
~1.5–4%Bambusa Vulgar…
~1–2%Dipropylene Gl…
~1–2%Glycerin
~1–2%1,2-Hexanediol
~1–2%Sodium Hyaluro…
~1–2%Hyaluronic Acid
~1–2%5 ingredients
≤ 1% each4 more ingredients below 1%
position-estimated %1% regulatory line

What's actually doing the work

Niacinamide
Vitamin B3 / Nicotinamide
Vitamin
The most versatile and universally tolerated skincare active. Inhibits melanin transfer (fading dark spots), reduces sebum by up to 68%, strengthens the skin barrier via ceramide synthesis, calms inflammatory pathways to reduce redness, and visibly minimises pores over 4–8 weeks. Works at any pH and pairs with virtually every other active.
Hyaluronic Acid
Sodium Hyaluronate / HA / Multi-Weight HA
Acid
A glycosaminoglycan naturally present throughout the body, holding up to 1000x its weight in water. The most powerful naturally occurring humectant. Multi-weight HA (high, medium and low molecular weight) delivers hydration at different skin depths. Production declines significantly with age.

Routine placement

Morning or evening

Similar on the shelf

Put this in context

Skin Stacker is independent and receives no payment from any brand. Ingredient analysis is based on publicly disclosed INCI lists and the peer-reviewed literature. Formulations change — always re-check the label on your specific batch before using.