Stop hiding your dark spots—start erasing them with the gold standard of K-Beauty clinical precision. The Easydew Vitamin C Boosting Ampoule 25 is not just another serum; it is a high-potency, dual-functional powerhouse that transforms dull, uneven skin into a radiant masterpiece in as little as 7 days. Engineered by Daewoong Pharmaceutical’s rigorous standards, this 2025 upgraded formula combines a massive 25% Vitamin C complex with 99.9% pure DW-EGF to deliver a “Toning Solution” you can actually see.

In the Korean market, skincare treatments are subdivided into three categories based on the concentration of active ingredients: Essence, Serum, and Ampoule. While ‘Essence’ is the lightest and ‘Serum’ provides medium care, ‘Ampoule’ represents the highest concentration, offering the most potent effects.
Difference Between Essence, Serum, and Ampoule
| Category | Essence | Serum | Ampoule |
|---|---|---|---|
| Traditional Use & Step | First treatment step after toner (before serum). | Targeted treatment after essence. | Highly concentrated treatment used before or instead of serum. |
| Consistency | Lightweight, watery, and less viscous. | Slightly thicker and more viscous than an essence. | Thickest and most concentrated. |
| Concentration | Moderate concentration of active ingredients. | Higher concentration of active ingredients than an essence. | Highest concentration of active ingredients. |
| Primary Purpose | To hydrate, balance skin pH, and prepare the skin to better absorb subsequent products. Foundation for treatment. | To target specific skin issues (e.g., anti-aging, dark spots, acne). Focused treatment. | To deliver a powerful boost of key ingredients for intense treatment over a short period. Booster/Intensive Treatment. |
Although this product is technically an ampoule, we will refer to it as a ‘serum‘ for customers who are unfamiliar with ampoules.
Main Features
- Maximum Potency Vitamin C: Contains a staggering 25% Vitamin C complex (23% Pure Ascorbic Acid + 2% Derivatives) for intense brightening.
- The 4X Synergy Effect: Clinically proven to be 4 times more effective when combining Vitamin C with our proprietary DW-EGF than Vitamin C alone.
- Fresh Lock Patent: Features a patented dual-seal cap and light-blocking coating to prevent oxidation and ensure every drop is as fresh as the first.
- 2025 Upgraded Formula: Now with 15% more volume and a non-sticky, watery texture optimized for seamless layering.
- Dual-Functional Certification: KFDA-approved for both Whitening and Anti-Wrinkle benefits.
The incredible effects of pure Vitamin C!
Apply Vitamin C Boosting Serum(Ampoule) to a browned apple and see the visibly brightened results after just 4 hours.

Point1. Fresh Lock System: Engineered for Pure Vitamin C Freshness

Point2. The synergistic effect of Vitamin C and EGF

- When combined in a serum and absorbed into the skin, Vitamin C and EGF generate a 4x synergistic effect.

- Developed by Daewoong Pharmaceutical with a structure 100% identical to human growth factors, our DW-EGF significantly minimizes skin irritation.
Point3. The Ultimate Synergy Blend: Maximizing the Power of High-Potency Pure Vitamin C
- Pure Vitamin C: 230,000 ppm
- Vitamin C Derivative: 20,000 ppm
- Glutathione: 5,000 ppm
- Ferulic Acid: 5,000 ppm
- Tranexamic Acid: 1,000 ppm
- Experience the incredible results: a 24% improvement in dark spot area in just 2 weeks.

Main Ingredients
- Pure Vitamin C (25% Complex): Fades hyperpigmentation, targets dark spots, and provides powerful antioxidant protection.
- DW EGF (sh-Oligopeptide-1): A premium, 99.9% pure human-identical growth factor that boosts collagen and accelerates skin renewal.
- Glutathione (98% Purity): Known as the “Master Antioxidant,” it works in tandem with Vitamin C to clear skin tone and enhance radiance.
- Ferulic Acid & Tranexamic Acid: Stabilizes Vitamin C while specifically targeting stubborn melasma and redness.
Skin Test
2-Week Dark Spot and Hyperpigmentation Improvement Test
- Test Institution: P&K Skin Research Center Co., Ltd.
- Test Period: January 15, 2025 – January 31, 2025
- Subjects: 21 Adult Males and Females
- Test Results: Confirmed a 24% reduction in the area of visible dark spots/pigmentation after only 2 weeks.
Formulation
This 2025 New Version features an ultra-lightweight, watery texture that absorbs instantly without the greasy residue common in high-dose Vitamin C products.

How to Use
- Prep: After cleansing, use a toner to refine and smooth your skin texture.
- Shake: Gently shake the bottle to thoroughly mix the Vitamin C formula before use.
- Apply: Dispense 2-3 drops directly onto your face, ensuring even coverage.
- Absorb: Gently pat until fully absorbed, focusing on areas with visible dark spots.
Pure Vitamin C serums require extra care and attention once opened.
- Freshness First: Due to the nature of high-potency Vitamin C, the formula is sensitive to oxidation. To ensure maximum efficacy, we recommend using the product within 2 months of opening.
- Storage Matters: Keep the bottle away from high temperatures and direct sunlight to prevent degradation.
- Keep it Cool: Storing the serum(ampoule) in the refrigerator helps maintain the peak freshness of the Vitamin C.
- The “Hiss” of Freshness: Because of the high concentration of Vitamin C, a small amount of gas may build up inside the bottle. You may hear a faint ‘hissing’ sound when opening the cap; this is a natural phenomenon and indicates the product is safe to use.
Recommended for
- Those who are frustrated by stubborn dark spots, melasma, and uneven skin tone.
- Those who want professional-grade antioxidant protection with pharmaceutical-level safety.
- Those who have found other high-content Vitamin C serums too sticky or irritating.
- Those who are looking for a rapid “glow-up” for dull, tired-looking skin.
- Those who want a dual-action solution for both brightening and wrinkle care.
Ingredients
Water, Ascorbic Acid (230,000ppm), Propanediol, Dipropylene Glycol, Methyl Propanediol, Tromethamine, Ethyl Ascorbyl Ether (20,000ppm), 1,2-Hexanediol, Sodium Hyaluronate, Phellinus Linteus Extract, Sorbitol, Ferulic Acid, Glutathione, Glycerin, sh-Oligopeptide-1 (0.1ppm), Choleth-24, Glucosylrutin, Tocopherol, Panthenol, Polyglyceryl-10 Oleate, Tranexamic Acid, Butylene Glycol, Hydrogenated Lecithin, Ethylhexylglycerin, Allantoin, Dipotassium Glycyrrhizate, Adenosine, Cellulose Gum, Sodium Phytate, Caprylic/Capric Triglyceride, Beta-Glucan, Sodium Stearoyl Glutamate, Sodium Ascorbyl Phosphate, Ascorbyl Glucoside, Ascorbyl Tetraisopalmitate, Ethanol, Disodium EDTA.
Frequently Asked Questions (FAQ)
Q: Which skin types is this product suitable for?
A: Vitamin C is a versatile ingredient that benefits all skin types by addressing various skin concerns. We especially recommend the Easydew Vitamin C Serum(Ampoule) for those struggling with a dull, lifeless complexion or uneven skin tone. Its powerful blend of high-potency Vitamin C, Glutathione, and Tranexamic Acid works to restore a vibrant and healthy glow.
Q: Can I use this on sensitive skin?
A: Due to the high concentration of pure Vitamin C, you may experience a slight tingling sensation upon application. This is a temporary reaction as the Vitamin C activates on your skin and is generally not a cause for concern. However, if you have highly sensitive skin, we recommend performing a patch test on a small area, such as your inner forearm, before full facial use.
Q: When and how should I apply it?
A: Use it every morning and evening as the next step after your toner.
- Morning Use: Always apply sunscreen before heading outdoors to protect the active ingredients and your skin.
- Caution: Please avoid applying the serum to irritated areas or open wounds.
Q: Can I use this instead of a dedicated “Dark Spot (Mela)” serum(ampoule)?
A: While dark spot serums are formulated for concentrated spot care, the Vitamin C Serum is designed for overall skin brightening and tone correction. For maximum results, we highly recommend using them together. Applying the Vitamin C Serum as a base layer before your dark spot treatment will leave your skin looking significantly clearer and more radiant.
The Science of K-Beauty Regeneration
Experience medical-grade skincare powered by 75 years of pharmaceutical expertise. Developed by Daewoong Pharmaceutical, Easydew brings professional clinical results directly to your home.
At the heart of every formula is our world-class DW-EGF (Epidermal Growth Factor)—a high-purity, bio-identical protein clinically proven to regenerate cells, boost collagen, and repair the skin barrier.
Why Choose Easydew?
- Pharmaceutical Grade: Born in dermatology clinics, backed by rigorous medical research.
- DW EGF Technology: Elite skin renewal for aging, sensitive, or post-procedure skin.
- Advanced Delivery: Nano-liposome technology for deep, fast absorption.
- Clinically Proven: Targeted solutions for elasticity, hydration, and visible repair.
Beyond everyday skincare. Discover the professional K-Beauty secret to radiant, resilient sk


hazel_glow –
I bought this with zero expectations, but the results are actually so impressive that I just repurchased it. I can visibly see my complexion brightening up and the dark spots next to my eyes fading away.
maya_pdx –
I¡¯ve been using this for about two months, and it is seriously so good. It provides a rich, plump moisture barrier for my ultra-dry skin, and my overall skin texture has improved so much! It stays deeply hydrated until the next morning.
Elena_W –
I keep repurchasing this because I can genuinely feel my skin getting healthier. My hyperpigmentation seems to be fading, and my skin texture feels so much smoother. It doesn’t cake or pill at all under makeup, which is amazing.
chloe_bright –
I¡¯ve been using it for a week, and my face already feels so much more luminous. It would be an absolute dream to pair this with laser toning treatments at the clinic. Above all, the intense hydration effect is top-notch.
Audrey_K –
I am genuinely so obsessed with this product. I¡¯ve tried so many Vitamin C products from other brands, but they were either way too stinging, turned my face red, or did absolutely nothing. This one actually delivers amazing results.
sophia_h –
Just finished ordering my third bottle. This stuff is incredible! Within a month, my complexion has brightened significantly, and my dark spots have visibly faded.
Lily.M –
While it hasn’t completely erased my dark spots overnight, this Vitamin C booster is pure magic. After just two days of use, my facial redness and dryness completely vanished, and my skin became so soft and supple. I can’t wait to see the hyperpigmentation results after a month!
natalie_glow –
This is my second bottle. For the first few days, I felt a slight tingle when applying this ampoule, but my skin must have adjusted because I don’t feel anything now. Every time I put it on, my skin gets so beautifully firm and plump with a gorgeous radiant glow.
Vanessa_B –
On my third repurchase! I was a bit skeptical at first, but now I¡¯m a total fan. It has zero stickiness, so it¡¯s my absolute favorite daily morning serum. I love layering it right before applying my Melatoning Oneday Ampoule?the difference is so clear that people around me notice it first. The inner luminosity is on a whole different level.
Hannah_R –
Repurchasing for the 5th time now, and I apply it religiously morning and night. My sun spots have faded significantly, and it leaves the most gorgeous glow on my face.
Lauren_P –
I¡¯ve been using this ampoule for about a week, and my skin looks noticeably more radiant. It feels incredibly smooth and hydrated to the touch?I am beyond satisfied. You absolutely need to get this. Highly recommend!