ULULIS PINKme vs Black Serum: Which Is Better for Frizzy Hair?

ULULIS PINKme vs Black Serum: Which Is Better for Frizzy Hair?
ULULIS Intra-Brand Comparison
๐ŸŒธ PINKme Line ๐Ÿ–ค Black Serum Line

ULULIS PINKme vs Black Serum:
Which Is Better for Frizzy Hair?

Both ULULIS lines are marketed as frizz solutions. But they work differently โ€” one controls frizz at the surface, the other repairs the cause. Here's how to tell which one your hair actually needs.
โœ๏ธ TokyoShelf Editorial ๐Ÿ“… June 2026 โฑ 6 min read ๐Ÿ‡ฏ๐Ÿ‡ต Japan-Domestic Lines

Both ULULIS lines are recommended for frizzy hair. But "frizzy hair" is a symptom, not a cause โ€” and the cause determines which product actually works. The PINKme line is designed to control frizz in the moment. The Black Serum line is designed to repair the structural damage that causes persistent frizz. Understanding which problem you have is the whole comparison.

Not All Frizz Is the Same

Frizz has different origins, and addressing the wrong one wastes both money and time. Before comparing the two products, identify which type of frizz describes your hair.

๐ŸŒง Humidity Frizz

Cause: hair absorbs water from the air, swelling the shaft and lifting the cuticle. Hair puffs in humid weather regardless of damage level.
โ†’ PINKme targets this directly

๐Ÿ”ฅ Damage Frizz

Cause: bleaching, perming, or heat damage has destroyed internal structure. Hair can no longer hold moisture properly โ€” frizz persists even in dry conditions.
โ†’ Black Serum addresses the root cause

๐ŸŒŠ Texture / Wave Frizz

Cause: naturally wavy or coarse hair that lacks enough moisture or weight to clump smoothly. Curls and waves separate into frizz.
โ†’ PINKme's control formula suits this

โณ Age / Change Frizz

Cause: hair texture has changed over time โ€” becoming more porous, more reactive, or drier than it used to be. Internal moisture capacity has declined.
โ†’ Black Serum's PDRN targets this

๐Ÿงช Colour-Routine Frizz

Cause: regular colouring (every 4โ€“8 weeks) accumulates structural damage even without bleaching. Each session adds to cortex protein loss.
โ†’ Black Serum's cumulative repair applies

๐Ÿ’ง Dryness Frizz

Cause: simply under-moisturised hair. No structural damage โ€” just lack of daily hydration causing rough cuticle and frizz.
โ†’ Either line works; PINKme more targeted

Product Profiles

ULULIS PINKme Water Conc. Control Hair Oil

100ml ยท Frizz Control Specialist

Designed specifically for wavy, frizzy, or "neko-ke" (cat hair) โ€” hair that puffs and resists smoothing. Contains a water-repellent straight active that manages how much moisture the hair absorbs from the air. Honey swell care actively controls the shaft's response to humidity.

Humidity Resistance Swell Control Wave Management Apple-Berry Scent

ULULIS Premium Black Serum Hair Oil

100ml ยท Structural Repair

Designed for hair with structural damage causing persistent frizz. PDRN restores internal moisture retention so hair holds its own moisture without absorbing from the air. Tosurea repairs broken bonds that make hair porous and frizzy at the structural level.

PDRN Tosurea Bond Repair 10ร— Keratin Exosomes

How Each Line Controls Frizz

The mechanism is the key distinction. PINKme uses a water-repellent active to physically prevent the hair from absorbing atmospheric moisture โ€” blocking the swelling that causes frizz. This is fast and effective, but it addresses the trigger (humidity) rather than the underlying porosity.

Black Serum uses PDRN to restore the cortex's ability to hold its own moisture at the right level โ€” so the hair is no longer reaching for external water because it already has what it needs internally. Over 2โ€“4 weeks of use, structural frizz decreases as the internal moisture environment stabilises. The result is less about blocking humidity and more about the hair no longer needing to absorb it.

The analogy: PINKme puts up a barrier against rain. Black Serum fixes the roof so the house stops leaking in the first place. If you have genuinely damaged hair, fixing the roof is the correct long-term solution โ€” but a barrier is still useful on a rainy day.

Head-to-Head Comparison

Category ๐ŸŒธ PINKme ๐Ÿ–ค Black Serum
Frizz mechanism Blocks humidity absorption from outside Control Restores internal moisture so hair stops absorbing externally
Speed of frizz control Immediate โ€” same wash day Faster 2โ€“4 weeks for structural benefit to build
Frizz from damage Masks it โ€” still there underneath Repairs the cause โ€” structural improvement Better
Humidity day protection Strong โ€” water-repellent active is specifically for this Stronger Good once fully active; less targeted same-day
Natural wavy / coarse hair Designed for this hair type Better Works well but not the primary target
Bleached / damaged hair Helps but doesn't repair Tosurea + PDRN address structural cause of frizz Better
Cumulative improvement Consistent โ€” same every wash Builds โ€” frizz reduces over weeks Better
Fine hair Lightweight control formula Both good Lightweight absorbing formula
Scent Apple-berry โ€” soft, sweet Black Fleur โ€” dark floral, sophisticated
Availability on TokyoShelf Currently unavailable (other lines stocked) โœ“ In stock now Available

Side-by-Side Ratings

ULULIS PINKme ULULIS Black Serum
Same-Day Frizz Control
9.3
8.2
Structural Repair
4.0
9.2
Humidity Resistance
9.4
7.8
Damaged Hair
5.8
9.2
Cumulative Improvement
6.0
9.0
Natural Wavy / Coarse
9.0
7.8

Verdict โ€” Which Line for Which Frizz

The Clear Answer by Frizz Type

๐ŸŒธ Choose PINKme When

  • Hair puffs in humidity but isn't damaged
  • Naturally wavy or coarse texture
  • You need same-day frizz control
  • No significant chemical treatment history
  • Hair is healthy but unruly in weather

๐Ÿ–ค Choose Black Serum When

  • Hair is bleached, permed, or colour-treated
  • Frizz persists even in dry conditions
  • Hair texture has changed over time
  • You want cumulative structural improvement
  • Regular colouring has left hair porous

The honest summary: if your frizz is driven by damage, PINKme will help every day but won't solve it. Black Serum takes longer but gradually addresses why the frizz keeps returning. For damaged hair, the Black Serum is the more efficient long-term investment even though PINKme gives faster day-one results.

Shop on TokyoShelf

The ULULIS Premium Black Serum Hair Oil is currently available on TokyoShelf. The PINKme line (stocked at other Japanese retailers) is not currently in the TokyoShelf catalog โ€” we carry the Black Serum line across shampoo, treatment, and oil.

ULULIS Black Serum Hair Oil 100ml

In stock ยท Japan-domestic ยท PDRN repair

Sourced from Matsumotokiyoshi, Tokyo.

Shop Hair Oil โ†’

Full Black Serum Routine

Shampoo + Treatment + Oil

Complete 3-step structural repair system.

See Full Routine โ†’

Also see: full guide to all four ULULIS lines and the Black Serum review.

ULULIS PINKme product details sourced from Japanese brand documentation. TokyoShelf currently stocks the Black Serum line only. All products sourced from Japan's domestic retail network.