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Japanese Product PassportHigh-potency clinical benchmark2021–2026 Neo Formula

Obagi Medical Japan

Obagi C25 Serum Neo (Rohto Japan Innovation)

Domestic Japanese Name: オバジC25セラム ネオ

The pinnacle of Japanese vitamin C formulation engineering, delivering 25% pure L-ascorbic acid in an anhydrous base that targets stubborn deep sunspots, pores, and loss of firmness.

  • 25% Pure Vitamin C
  • Japan
  • Clinical Potency
  • Amber Glass Dropper
Shortlisted · Sourced wear profile

Formulation Renewal & Version Diff

Tracking formulation and packaging transitions between domestic Japanese releases.

Current Edition2021–2026 Neo Formula

Key Formulation Adjustments

  • World-first 25% pure ascorbic acid concentration stabilization in water-free base
  • Added White Signal Complex (Harpagophytum Devil's Claw extract) for dual spot targeting
  • Enhanced dermal penetration matrix reduces surface stickiness by 30%
How to Spot on Shelf:

Features the bold metallic gold C25 emblem on dark brown amber glass with a grooved golden cap.

Official Japanese Wear Protocol

Manufacturer directions and dosage transcreated for high-humidity climates.

Recommended Dosage4 to 5 drops (~0.2 mL) morning and night onto palms
Pre-Makeup Settle Time90–120 seconds
Cleansing MethodSingle-pass removal with regular daily foam cleanser or gentle face wash.

Application Sequence

  1. 1Dispense 4 to 5 drops into the palm of your hand after watery lotion
  2. 2Gently warm between palms and press across cheeks, forehead, and jawline
  3. 3Target an extra half-drop directly onto prominent hyperpigmented zones
  4. 4Wait 90 to 120 seconds before applying moisturizer and sunscreen
Wear Cautions:
  • Mild transient tingling is expected during initial days due to 25% acid concentration.
  • Store upright in a cool, dark cabinet away from direct tropical sunlight.

Standardized Climate Telemetry

Empirical wear behavior observed under high heat and tropical humidity.

Spread and drag

Concentrated micro-viscous fluid with intense slip; spreads evenly across entire face with 4 drops

Finish after 15 minutes

Smooth velvet radiant finish; high-solvation matrix absorbs deeply without residual tackiness

Visible white cast

100% transparent; clear rich amber tone disappears immediately into skin

Eye-area comfort

Potent 25% acid concentration; keep at least 1 cm outside periocular orbital rim

Pilling with a routine

Requires full 90-120s dry-down; once absorbed, pairs seamlessly beneath SPF without rolling

Warm-weather commute

Locks into stratum corneum; delivers sustained cellular antioxidant protection during sun exposure

Reapplication

Night and morning application only; not intended for midday touch-ups

Verified Retail Sources

Authentic distribution channels with direct pricing across key regions.

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