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Experience brighter, firmer, younger-looking skin in just 30 days with MD® Ultimate C Serum. Powered by clinical-strength 20% L-ascorbic acid, this physician-formulated serum improves skin tone, minimizes pores, and fades the appearance of dark spots—without irritation. Its clear, stable formula won’t oxidize or turn yellow, making it ideal for even sensitive, Retin-A-treated skin. Loved by both skincare professionals and customers for its impressive results and silky finish.
“My pores have visibly diminished, my skin feels firmer, and there’s no irritation—just glow. This serum is a must-have in my daily skincare.” – Natalie L.
Net Content: 1 fl oz e / 30ml
We create beauty through advanced science™
MD® Ultimate Vitamin C Serum: Clinical-Strength Brightening & Anti-Aging Treatment
Unleash your skin’s full radiance with MD® Ultimate C Serum—a dermatologist-developed formula featuring 20% stabilized L-ascorbic acid, the gold standard for visibly brighter, firmer, and smoother skin in just 30 days.
This powerhouse antioxidant serum is clinically formulated to:
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Stimulate collagen and elastin production
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Visibly reduce fine lines, wrinkles, and hyperpigmentation
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Minimize enlarged pores and even out skin tone
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Protect against free radicals and environmental damage
What makes MD Ultimate C Serum different?
✔️ Professional Strength: Delivers 20% L-ascorbic acid in a pH-balanced, non-irritating base
✔️ Ultra-Stable Formula: Remains crystal-clear after opening—no yellowing or oxidation
✔️ Gentle Yet Potent: Perfect for sensitive skin, including those using Retin-A
✔️ Visible Results in 30 Days: Firmer, brighter, more youthful-looking skin with daily use
Who Is It For?
Ideal for all skin types—especially aging, sensitive, sun-damaged, or dry skin—MD Vitamin C Serum is your go-to solution if you’re struggling with:
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Dull, tired-looking complexion
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Uneven skin tone or dark spots
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Premature signs of aging
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Loss of firmness and elasticity
"This serum gives me that glow without the irritation. It’s a game-changer for my Retin-A sensitive skin. My pores have visibly shrunk and my makeup goes on smoother." – Natalie L.
Net Content: 1 fl oz / 30ml – 6 to 8 weeks supply
L-Ascorbic Acid :
This stabilized form of vitamin C helps sensitive skin tone, boosts collagen production, and protects against environmental damage, while minimizing fine lines and wrinkles.
Phyllanthus Emblica Fruit Extract :
Also known as Amla Fruit or Indian Gooseberry, this is also an extraordinary source of vitamin C. This ingredient also offers antioxidant and anti-inflammatory benefits.
Ergothioneine:
This natural mushroom extract offers powerful antioxidant benefits.
How to Use MD® Vitamin C Serum
For best results, apply MD® Vitamin C Serum to clean, dry skin once or twice daily.
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Dispense 2–4 drops onto fingertips.
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Gently apply to the face, neck, and back of hands, focusing on areas with fine lines, uneven tone, or sun damage.
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Massage using upward, circular motions until fully absorbed.
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Wait at least 10 minutes before layering with your moisturizer or sunscreen.
You may feel a mild tingling sensation during the first week of use—this is normal and a sign that the 20% L-ascorbic acid is actively penetrating and supporting skin renewal. Follow with a gentle moisturizer to soothe the skin as it adjusts.
Our MD® Ultimate Vitamin C Face Serum is here to give your skin a boost of youthful radiance! This best-in-class anti-aging serum works wonders with its high vitamin C content, helping to reduce the visible signs of aging, regardless of your skin type. So don't be surprised if you catch yourself doing a double-take in the mirror – this serum is no joke! Get ready for your skin to glow brighter than ever!
• Fast-acting penetrates deeply into the skin
• Minimize pore size
• Minimize melasma, age spots, and discoloration
• Boost moisture and reduce dryness
• Minimize wrinkles and fine lines
• Protect against UV and free radicals
• Clinical strength for real results
• Great for under makeup as a primer
• Suitable for men and women
• Made in the USA in a GMP-certified Facility
• High quality remains stable (clear) even one year after opening
• Softer, firmer, radiant complexion with regular use
• Vitamin C Serum safe for sensitive skin
Q: What should I look for in a high-quality Vitamin C serum?
A: Look for a stable, high-concentration formula containing L-ascorbic acid (ideally 15–20%), supported by ingredients like Ferulic Acid and Vitamin E for enhanced antioxidant protection.
Q: What is Vitamin C and how does it benefit the skin?
A: Vitamin C is a powerful antioxidant that brightens skin tone, fades hyperpigmentation, and boosts collagen production while protecting against free radical damage from UV rays and pollution.
Q: When is the best time to apply Vitamin C serum?
A: Apply in the morning under moisturizer and sunscreen to boost protection and enhance makeup application. It can also be used at night for added anti-aging benefits.
Q: Which skin types benefit from using Vitamin C serum?
A: Vitamin C is suitable for all skin types, including dry, oily, acne-prone, sensitive, and aging skin. It helps reduce redness, fade spots, and improve overall skin clarity.
Q: How does Vitamin C help even out skin tone and fade dark spots?
A: Vitamin C inhibits melanin production and reduces inflammation, making it effective for fading dark spots, melasma, acne marks, and uneven skin tone.
Q: Why is Vitamin C considered one of the best anti-aging ingredients?
A: Vitamin C reduces the breakdown of collagen by inhibiting metalloproteinases (MMPs) and supports new collagen formation, improving firmness and reducing fine lines.
Q: Is Vitamin C serum safe for sensitive skin?
A: Yes. Clinical-grade Vitamin C serums like MD® Ultimate Vitamin C are formulated to be non-irritating while strengthening the skin’s barrier against environmental stressors.
Q: What makes MD® Ultimate Vitamin C Serum unique?
A: Unlike many serums, MD’s Vitamin C remains clear and stable for over a year. It’s clinically potent with 20% L-ascorbic acid and delivers visible results within 30 days.
Q: Can Vitamin C serum help with yellow or dull undertones?
A: Yes. Vitamin C brightens dull complexions and helps reverse yellowing caused by sun exposure and aging, giving skin a radiant, more youthful appearance.
Q: Should I use Vitamin C serum once or twice daily?
A: Use once daily in the morning. For enhanced results, it can also be applied at night. Always follow with a moisturizer and SPF if used during the day.
Q: Can I apply Vitamin C serum to areas other than my face?
A: Yes. Vitamin C can be used on the neck, chest (décolletage), and backs of hands to address sun damage and visible signs of aging.
Q: Why does my skin tingle when I apply Vitamin C serum?
A: A slight tingling is common when using clinical-strength Vitamin C, especially on dry or sensitive skin. Follow with moisturizer. Tingling usually subsides with continued use.
Q: How long will one bottle of MD® Vitamin C Serum last?
A: One 1 fl oz (30ml) bottle typically lasts 2 to 3 months with daily use, depending on how much you apply each time.
Q: Is MD® Vitamin C Serum vegan and cruelty-free?
A: Yes, MD® Vitamin C Serum is vegan, cruelty-free, and made with natural, skin-safe ingredients. It is not tested on animals.
Q: Can I use MD® Vitamin C Serum during pregnancy or while breastfeeding?
A: Yes. Vitamin C is a Category A ingredient and is safe for use during pregnancy and breastfeeding. It helps prevent melasma and promotes healthy skin tone.
Q: How does MD® Vitamin C Serum improve the overall health and appearance of my skin?
A: MD® Vitamin C Serum nourishes the skin with a potent blend of antioxidants and hydrating ingredients. It supports skin barrier repair, boosts elasticity, and promotes a radiant, youthful-looking complexion by enhancing collagen synthesis and protecting against environmental stressors.
Q: What makes MD® Vitamin C Serum different from other anti-aging serums on the market?
A: Unlike many serums that oxidize quickly, MD® Vitamin C Serum features a stabilized 20% L-ascorbic acid formula that stays clear and potent after opening. Combined with Ferulic Acid and Vitamin E, it delivers maximum antioxidant protection, collagen support, and visible results within 30 days.
Q: Are there any side effects when using MD® Vitamin C Serum?
A: MD® Vitamin C Serum is made with skin-friendly, naturally derived ingredients and is generally well-tolerated. Some users may experience mild tingling upon initial application, which typically subsides as the skin adapts.
Q: What are the key benefits of Vitamin C for the skin?
A: Vitamin C (L-ascorbic acid) is a clinically backed antioxidant that brightens uneven skin tone, reduces the appearance of fine lines, and protects against free radical damage from pollution and UV exposure. It also supports collagen production for firmer, healthier-looking skin.
Results Without Compromise
MD® Ultimate Vitamin C Serum contains a powerful 20% L-ascorbic acid concentration, providing clinical strength and anti-aging properties. This stable vitamin C serum helps build collagen, allowing for firmer skin, even skin tone, and a brighter complexion. With proven benefits to reduce pores, it's the gold standard for collagen production. Great for use on the face, decolletage, and hands, it's the best vitamin C serum for all skin types, including sensitive skin.
The professionally formulated MD® Vitamin C Serum, s specially created to help you achieve younger, brighter, and healthier-looking skin within a period of 30 days
What are the results?
- •Increased elasticity and tightness in the skin.
- •Reduced Wrinkles and Fine Lines
Real People Real Results
One of my favourite skin product.~ Carol A.
MD Vitamin C Brightening Serum will make your skin baby soft and it’s one of my favorite skin products. The serum tingles when you first apply it but there’s no irritation or redness. I tried this serum every night for a month, applying just a little over my facing including under my eyes and neck. Within the month, the larger pores around my nose had become much finer. Before I used this product, I noticed my skin was starting to get a slightly leathery look over my cheeks…(I’m in my mid-40’s). After a month of using Ultimate C Serum, my skin had become beautifully soft and my completion was glowing