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Obagi Medical Professional-C Serum 20% (1 fl. oz.)
A concentrated anti-aging serum enriched with vitamin C that is suitable for all skin types.
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4 installments of $35.50 with Klarna Learn more
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4 installments of $35.50 with afterpay Learn more
Obagi Professional-C Serum 20% infuses your skin with L-ascorbic acid, the only form of vitamin C suitable for topical application. Designed to penetrate deep into your skin, this vitamin C serum provides effective antioxidant protection from UV damage as it brightens away hyperpigmentation and encourages the growth of collagen and elastin fibers. Hyaluronic acid binds moisture to your skin to prevent dryness.
Apply 5 to 7 drops of Obagi Professional-C Serum to the face, neck and chest using fingertips. Apply to cleansed skin in the morning before sunscreen and makeup application. A slight tingling may occur in some people, which diminishes with continued use.
Application Area: Face
Ideal for these Concerns: Free Radical Damage, Hyperpigmentation, Sun Damage
Ingredient: Antioxidants, Hyaluronic Acid, Vitamin C
Preferences: Clean
Skin Care: Skin Care Treatments
Skin Care Treatments: Face Serums
Skin Type: Acne-Prone Skin, Combination Skin, Dry Skin, Mature Skin, Normal Skin, Oily Skin, Sensitive Skin
Wellness | External Factors: Pollution Defenders and Treatments, UV Ray Protectors and Treatments
Propylene Glycol, Water, L-Ascorbic Acid, Alcohol, Ascorbyl Glucoside, Ethoxydiglycol, Phenoxyethanol, Sorbitol, Sodium Hyaluronate, Zinc Chloride, Calcium Hydroxide, Fragrance.
- Professional-C
- Obagi Medical
- 1 fl. oz
Frequently Bought Together



Total Price: $220.00
Add both to cart
Obagi Medical Professional-C Serum 20% (1 fl. oz.)
A concentrated anti-aging serum enriched with vitamin C that is suitable for all skin types.
Earn 710 reward points when purchasing this product as a rewards member*
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Free delivery after your first order
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You control the frequency
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No commitment. Cancel or delay
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Payment will be taken every month. months.
$142.00

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4 installments of $35.50 with Klarna Learn more
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4 installments of $35.50 with afterpay Learn more
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Obagi Professional-C Serum 20% infuses your skin with L-ascorbic acid, the only form of vitamin C suitable for topical application. Designed to penetrate deep into your skin, this vitamin C serum provides effective antioxidant protection from UV damage as it brightens away hyperpigmentation and encourages the growth of collagen and elastin fibers. Hyaluronic acid binds moisture to your skin to prevent dryness.
Apply 5 to 7 drops of Obagi Professional-C Serum to the face, neck and chest using fingertips. Apply to cleansed skin in the morning before sunscreen and makeup application. A slight tingling may occur in some people, which diminishes with continued use.
Application Area: Face
Ideal for these Concerns: Free Radical Damage, Hyperpigmentation, Sun Damage
Ingredient: Antioxidants, Hyaluronic Acid, Vitamin C
Preferences: Clean
Skin Care: Skin Care Treatments
Skin Care Treatments: Face Serums
Skin Type: Acne-Prone Skin, Combination Skin, Dry Skin, Mature Skin, Normal Skin, Oily Skin, Sensitive Skin
Wellness | External Factors: Pollution Defenders and Treatments, UV Ray Protectors and Treatments
Propylene Glycol, Water, L-Ascorbic Acid, Alcohol, Ascorbyl Glucoside, Ethoxydiglycol, Phenoxyethanol, Sorbitol, Sodium Hyaluronate, Zinc Chloride, Calcium Hydroxide, Fragrance.
- Professional-C
- Obagi Medical
- 1 fl. oz
Frequently Bought Together



Total Price: $220.00
Add both to cart
Customer Reviews
Top Customer Reviews
Where reviews refer to beauty products or supplements, results may vary from person to person. Customer reviews are independent and do not represent the views of Dermstore.
Reward members earn 50 points for every review written on verified purchases.
Best vitamin C serum
I have been using Obagi vitamin C serum for about 5 years now. I switched from the 15% to the 20% about 2 years ago. This is THE best vitamin C serum out there. It absorbs quickly and does not feel greasy or sticky. A little goes a long way. I use this on my face, neck and chest every morning and it really does brighten and even out my skin. It is expensive but so worth it and I only purchase when it is on sale. Love that Dermstore has sales often.
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Best Serum Ever
Skin feels so smooth. Love this high dose of Vit C. Really nourishing for the skin.
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Amazing results
This is hands down my favorite product! I have received so many compliments on my skin since I started using this about a year ago. I started with the 15% concentration and moved to 20% about 6 months in. My skin looks bright and a little dewy (not greasy). It gives my skin a fresh look! It works well under my moisturizer and makeup! I love the Obagi products!
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Excellent product
The Obagi vitamin c serum is an excellent product. I hesitated about ordering due to the high price, but it makes a difference when used daily, and I only need 7-8 drops applied in the morning, so it lasts quite a while.
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good - I think
I keep buying it because I believe that using a C formulation is very helpful for one's skin. But I do find it challenging to know which is best to use. At these prices, tough to trial different ones.
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My 4th time buying!
I love this product and have purchased it 4 times now.
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Close to Skinceutical formula
I ordered this Obagi product because I needed a vitamin C serum and this one was on sale, and a better starting price. I usually use the Skinceutical CE ferulic formulation, but it is pricier and the gold standard of Vitamin C serums. This Obama product is close, but doesn’t spread on facial skin as well as the Skinceutical. Seems to require a few more drops per application than the other. I use it in combination with the Obaji gentle cleanser and toner in the am. It does work to keep my melasma and splotches of rosacea to a minimum. Will wait and see further as I keep using if i purchase again or go back to Skinceutical.
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Love it!!!
I am really liking this vitamin C serum, the scent is really light and when you apply it doesnt feel drying at all, I get insant glow right away after application. When I am out of this bottle, I plan on repurchasing again, this will be my go to vit c.
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Strong Smell
I wish I fell into the same camp of these glowing reviews, which are what prompted me to purchase this product in the first place! While the formula is nice, the strong perfume smell is overpowering and offensive, especially early in the morning. It's too early to tell if the formula is working, but I will likely discontinue it as the added fragrance is irritating my skin.
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Excited
Super excited to try this out. Packaging was amazing and felt like this could last me awhile.
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