Obagi C25 Serum Neo 12ml - 25% pure vitamin C serum for intense brightening Japan

Obagi C25 Serum Neo 12ml

$113.11
$113.11 $115.47
Skip to product information
Obagi C25 Serum Neo 12ml - 25% pure vitamin C serum for intense brightening Japan
Obagi C25 Serum Neo 12ml
Obagi

Obagi C25 Serum Neo 12ml

$113.11
$113.11 $115.47
In stock

The pinnacle of Japanese skincare science for total complexion renewal.

✅ Highest 25% Vitamin C concentration ever achieved in the Obagi series
✅ Advanced Stability technology ensures the pure Vitamin C remains potent
✅ Multi-Targeted Repair addresses pores, fine lines, and skin elasticity
✅ Fast Absorption formula penetrates deep into the stratum corneum instantly
✅ Radiance Boosting power visibly eliminates dullness and uneven skin tone
✅ Free from: Artificial Colors and Mineral Oil

🛡️ 100% Authentic – Japan domestic version
🚚 Ships from Tokyo
✨ Delivery in 4-6 business days

Description

Obagi C25 Serum Neo 12ml is Obagi's highest-concentration pharmaceutical-grade Vitamin C serum — delivering 25% pure L-Ascorbic Acid for skin with advanced, treatment-resistant pigmentation, established Vitamin C tolerance, and a need for the most intensive brightening result available in a non-prescription topical format. The "Neo" designation marks the current Japan-domestic formula generation with the upgraded Signal Lock Complex II stabilisation.

  • 25% pure L-Ascorbic Acid — the maximum concentration in the Obagi C range; provides the most intensive melanin inhibition and collagen stimulation
  • Signal Lock Complex II — upgraded proprietary stabilisation system that maintains 25% L-Ascorbic Acid potency more reliably than the original Signal Lock used in C20
  • Vitamin E — synergistic antioxidant that maximises the effective activity window per application
  • Grapefruit Extract — additional antioxidant support and the characteristic Obagi C fragrance
  • 12ml — same size as the C5 and C10; the smaller volume is appropriate given the higher cost-per-ml and intensive-use positioning
  • Not for first-time Vitamin C users — requires established tolerance through C10 or C20 before introduction

How it works: At 25%, L-Ascorbic Acid achieves its maximum skin-level concentration after penetration, producing the most significant reduction in tyrosinase activity and the highest collagen synthesis stimulation of any topical non-prescription Vitamin C. Signal Lock Complex II addresses the primary limitation of very high concentration L-Ascorbic Acid: at 25%, the active is more susceptible to oxidation than at lower concentrations — the upgraded stabilisation system extends the product's effective window.

C25 Neo vs C20 — when to escalate: Move to C25 Neo only after C20 has been used consistently for 3+ months and skin shows good tolerance but still has unresolved stubborn spots or persistent dullness that the C20 has not fully cleared. C25 is not meaningfully more effective than C20 for general brightening — the clinical difference between the two concentrations is most pronounced for deep, treatment-resistant pigmentation where 20% has been insufficient. For most users, C10 or C20 provides sufficient results.

Known in Japan as オバジ C25セラム ネオ 12ml.

Key Ingredients
  • 25% Pure Vitamin C (L-Ascorbic Acid): The maximum concentration for brightening and anti-aging.
  • Signal Lock Complex II: A proprietary blend that enhances the antioxidant power of Vitamin C.
  • Vitamin E: Works in synergy with Vitamin C to protect against oxidative stress.
  • Grapefruit Extract: Provides natural skin-conditioning and a refreshing aroma.
  • Free-from: Artificial Dyes and Mineral Oil.

HOW TO USE
  1. Use in the morning and evening after applying your lotion/toner.
  2. Squeeze the dropper to dispense 4–5 drops into the palm of your hand.
  3. Gently apply to the face, focusing on areas with enlarged pores or uneven tone.
  4. Press into the skin with warm palms to enhance penetration.

Pro Tip: Always follow with a high-protection sunscreen like Anessa in the morning, as Vitamin C makes your skin more efficient at fighting UV damage but requires a barrier.

FAQ

Will such a high concentration irritate my skin?
While 25% is very potent, Obagi’s pharmaceutical formula is designed for stability. You may feel a slight, temporary tingling sensation upon application; this is a normal sign that the Vitamin C is active. If you have extremely sensitive skin, we recommend starting with Obagi C10 or C20 first.

Does the serum turn brown over time?
Because it contains high-purity pure Vitamin C, the liquid may naturally turn a light yellow or amber color over time. This is normal and does not affect the potency. However, we recommend keeping it in a cool, dark place and using it within 2–3 months of opening for maximum freshness.

How long does one 12ml bottle last?
When using 4–5 drops twice daily, one bottle typically lasts about 30 to 40 days. In Japan, this is considered one "cycle" of intensive skin renewal.

Can I use this with Retinol or AHAs?
We recommend using Obagi C25 in your morning routine for antioxidant protection and using your Retinol at night. If using with AHAs, apply them at different times of the day to avoid over-sensitizing your skin barrier.

Does it have a strong scent?
It has a light, refreshing Enriched Grapefruit scent. This is not a heavy perfume but a natural characteristic of the ingredients, providing a revitalizing start to your morning.

How do I know if my Obagi C25 is real or fake?
Authentic Obagi C25 from Tokyo Shelf comes in a heavy, dark-tinted glass bottle with a high-quality dropper and a distinct batch code. The serum should have a slightly viscous, "rich" feel. Fake versions are often watery, have a harsh chemical smell, or come in low-quality plastic bottles. We source directly from authorized Tokyo pharmacies to guarantee you receive the genuine 25% Neo formula.

You may also like