Ululis Premium Water Conc Black Serum Hair Oil 100ml water-based repair formula for sleek and bright hair

ULULIS Premium Water Conc. Black Serum Hair Oil 100ml

$16.49
$16.49 $18.49
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Ululis Premium Water Conc Black Serum Hair Oil 100ml water-based repair formula for sleek and bright hair
ULULIS Premium Water Conc. Black Serum Hair Oil 100ml
ululis

ULULIS Premium Water Conc. Black Serum Hair Oil 100ml

$16.49
$16.49 $18.49
In stock

Deeply Repairs Damaged Hair While You Sleep — Without the Grease

✅ 95%+ moisture-repair formula, zero grease
✅ Next-gen PDRN + Tosurea deep-damage repair
✅ 10x concentrated collagen water + keratin water
✅ Black Diamond Truffle — rare luxury moisturiser
✅ All-day frizz control, silky finish from one use
✅ Free from: sulfates, parabens, mineral oil, animal testing

🛡️ 100% Authentic – Japan domestic version
🚚 Ships from Tokyo
✨ Fresh stock
🛍️ Same product sold in Japanese beauty stores

Description

ULULIS Premium Water Conc. Black Serum Hair Oil 100ml is a leave-in repair and finishing oil for dry, damaged, colour-treated, and age-affected hair — the most advanced formula in the ululis lineup, launched February 2026, with over 95% moisture and repair actives including Tosurea, PDRN, and Black Diamond Truffle. Applied to towel-dried hair, it provides all-day frizz control, heat protection, and the structural repair that continues working as the hair dries.

  • Tosurea — bonds to damaged sites inside the hair shaft and continues repairing as the oil absorbs into damp hair
  • PDRN (DNA-Na) — maintains cellular-level moisture binding through the day for sustained frizz control
  • 10x concentrated Collagen Water and Keratin Water — repairs and strengthens surface and internal damage
  • Black Diamond Truffle Extract — luxury deep conditioning active for intense shine and softness
  • Zero grease — over 95% active formula leaves no greasy residue despite the high oil concentration
  • 2–3 pumps for damp hair — apply from mid-lengths to ends before blow-drying or air-drying

How it works: Unlike conventional hair oils that coat the cuticle surface, this formula's 95%+ active composition means Tosurea and PDRN continue bonding to and repairing damaged zones as the oil is absorbed from damp hair — the repair happens during the styling window, not just at application. Black Diamond Truffle provides the deep moisture that maintains softness and shine as the hair dries and throughout the day.

ULULIS Black Serum Hair Oil vs other leave-in oils: Most leave-in oils use silicone or plant oil to create surface shine and frizz control without internal repair. This ululis Premium oil functions simultaneously as a repair treatment and a finishing product — the active-dominant formula means each application contributes to cumulative structural repair, not only daily surface benefit. For severely damaged hair where other leave-in oils no longer provide lasting improvement, this represents a meaningful upgrade.

Known in Japan as ウルリス プレミアム ウォーターコンク ブラックセラム ヘアオイル.

Key Ingredients
  • Tosurea® (Ammonium diaminoethyl thiosuccinate) — next-generation repair active that bonds to damaged areas inside the hair shaft, rebuilding structural integrity
  • PDRN (DNA-Na) — a precision moisture-binding ingredient used in advanced skincare and now applied to hair to restore cellular-level hydration
  • Hydrolysed Keratin (Wool) — fills micro-cracks and gaps along the hair cuticle for smoother texture and reduced breakage
  • Soluble Collagen Water — concentrated 10× vs. standard ululis line; wraps each strand in a moisture film that locks in repair actives
  • Black Diamond Truffle Extract — rare botanical moisturiser known for its dense nutrient profile; adds luxurious conditioning depth
  • Exosome (Human Adipose-Derived Mesenchymal Cell Exosome) — emerging biotech ingredient from the aesthetics world, applied here for hair barrier support
  • Black Serum Water Complex — fermented black rice + black soy peptide + black pearl protein; strengthens hair against daily heat and friction damage
  • Niacinamide — supports scalp surface clarity and hair brightness
  • Glutathione — antioxidant active that protects the hair fibre from environmental oxidative stress

Free from: Sulfates · Parabens · Mineral oil · Animal-tested ingredients

HOW TO USE
  1. After washing, gently squeeze excess water from hair with a towel — hair should be damp, not dripping
  2. Dispense 2–3 pumps into your palm (add 1 pump for longer or thicker hair)
  3. Rub palms together lightly and apply from mid-lengths to ends first, working upward — avoid the scalp
  4. Use a wide-tooth comb or paddle brush to distribute evenly through the hair
  5. Blow-dry as usual, or air-dry for a softer finish
  6. Can also be applied to dry hair for smoothing or shine before styling

Pro tip: For heavily damaged or bleached hair, apply to damp hair, detangle, then wait 2–3 minutes before blow-drying. The extra dwell time allows the repair actives to penetrate more deeply before heat is applied.

FAQ

Does this hair oil make hair greasy or weigh it down?
No — despite the rich ingredient list, the texture is designed to be lightweight and non-sticky. Reviewers on @cosme and LIPS consistently note that it absorbs without the heavy, oily residue common in thicker oils. The key is not over-applying: 2 pumps is enough for most hair lengths. Fine hair users can start with 1 pump.

Can I use this on colour-treated or bleached hair?
Yes, and it's particularly suited to it. Colour processing and bleaching damage the inner cortex of the hair — exactly what PDRN and Tosurea are designed to address. The oil also forms a protective layer that helps slow colour fade by reducing cuticle damage.

Is this a leave-in or rinse-out treatment?
It is a leave-in hair oil applied after towel-drying and used before or after blow-drying. It is not a rinse-out treatment. It can also double as a finishing oil on dry hair for smoothing and shine.

How does the ululis Premium Black Serum Hair Oil compare to the regular ululis Moist Hair Oil (blue bottle)?
The standard blue ululis Moist Hair Oil is a strong everyday moisturiser — 90%+ hydration components, lightweight, great for preventing dryness. The Black Serum (Premium) is a significant step up: 95%+ moisture-repair composition, PDRN and Tosurea for structural repair (not just surface hydration), and 10× higher collagen and keratin concentration. If your hair has noticeable damage, frizz, or has changed texture over time, the Premium Black Serum is the more targeted choice.

How does it compare to the &honey Deep Moist Hair Oil?
The &honey Deep Moist Hair Oil is honey-based and focuses on softness and deep hydration — it's popular for extremely dry, coarse hair. The ululis Premium Black Serum focuses more on repair and resilience through next-gen biotech actives (PDRN, exosomes, Tosurea). If your main concern is structural damage rather than dryness alone, the Black Serum has a more targeted formula. Both are excellent; the choice depends on whether you need hydration or repair as the priority.

How do I know if I'm buying the authentic Japanese version, and not a counterfeit or export reformulation?
Authentic Japanese-market ululis products carry Japanese text on all packaging, include the full ingredient list (全成分) in Japanese as required by Japanese cosmetics law, and are produced and distributed through Japan's domestic supply chain. Export or parallel-import versions sold via unverified third parties may carry different formulas or expired stock. TokyoShelf sources this product directly from Tokyo's domestic retail and pharmacy network, ships fresh from Japan, and does not warehouse internationally — so what you receive is exactly what Japanese consumers buy in-store, at the same formula and freshness.

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