Allure Best of Beauty Award Seal 2025
SERUM 20%
SERUM 20%
SERUM 20%
SERUM 20%
SERUM 20%
SERUM 20%
BESTSELLER
4.6
Rated 4.6 out of 5 stars
186 Reviews
PROFESSIONAL-C® ,

SERUM 20%

Vitamin C Serum For Normal to Oily Skin

$155.00
Size
SERUM 20%

SERUM 20%

Free & Easy Returns

Best for
Skin Discoloration - color
Skin Discoloration
Skin Types: Normal to OilyCombination

Discover Obagi’s bestselling Professional C® Serum 20%, formulated with L-Ascorbic Acid and Sodium Hyaluronate. Fast-absorbing serum helps to brighten and even skin tone, reduce the appearance of dark spots, strengthen antioxidant defenses, and improve the appearance of fine lines and wrinkles. For a supercharged, hydrated glow and more youthful-looking skin. Ideal for normal to oily skin types.

  • 91% of users reported skin appeared bright and more hydrated*
  • Combats oxidative stress induced by blue light and infrared radiation** that cause early signs of skin aging
  • Formulated with L-Ascorbic Acid to brighten skin
  • Helps to neutralize free radicals

*Obagi survey analysis, Vitamin C products: April 28, 2010. Data on file at Obagi Cosmeceuticals LLC.

**2023 In-Vitro Antioxidant Potential Assay. Data on file at Obagi Cosmeceuticals LLC.

    How To Use

    • Step 1: Apply 5-7 drops in the morning after cleansing and toning, before moisturizer.
    • Step 2: Follow-up with SPF before makeup application.
    • Note: Use within 3-6 months of first opening.


    Storage

    • Store at controlled and consistent humidity and temperature not exceeding 25°C (77°F).
    • Keep out of direct sunlight.
    • Store in a dark, cool place after opening.
    • Keep cap on tightly when not in use.

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    • Product description
      Discover Obagi’s bestselling Professional C® Serum 20%, formulated with L-Ascorbic Acid and Sodium Hyaluronate. Fast-absorbing serum helps to brighten and even skin tone, reduce the appearance of d...
      Professional C® Serum 10% is formulated with L-Ascorbic Acid to help brighten and even skin tone, strengthen skin's antioxidant defenses and improve the appearance of fine lines and wrinkles withou...
      The Obagi-C Fx C-Clarifying Serum combines Vitamin C and Arbutin to enhance the appearance of even skin tone for a healthier-looking complexion.
    • Best for
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      Sensitive Skin - color
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      Skin Types
      Normal to OilyCombination
      Normal to DryCombination
      Normal to OilyNormal to DryCombination
    4.6
    Rated 4.6 out of 5 stars
    Based on 186 reviews
    Write a Review (Opens in a new window)
    186 reviews
    • Gill W.
      AL, United States
      Verified Buyer
      I recommend this product
      Age 55-64
      Gender Female
      Rated 5 out of 5 stars
      February 1, 2026
      Really nice product

      Excellent product I feel my skin is glowing more and feels more hydrated

      EffectivenessRated 5.0 on a scale of 1 to 5
      Was this helpful?
    • Colleen C.
      OH, United States
      Verified Buyer
      I recommend this product
      Age 55-64
      Gender Female
      Rated 5 out of 5 stars
      January 24, 2026
      Love this! Better than skinceuticals!

      Best on market

      EffectivenessRated 5.0 on a scale of 1 to 5
      Was this helpful?
    • Christi
      I recommend this product
      Rated 5 out of 5 stars
      January 23, 2026
      5 Stars

      Best vitamin c serum on the market

      Was this helpful?
    • Daniel M.
      CA, United States
      Verified Buyer
      I recommend this product
      Age 35-44
      Gender Male
      Rated 5 out of 5 stars
      January 17, 2026
      Amazing serum

      This is my second bottle. I am amazed about the smell, efficacy and quality.

      1. The smell is great. Usually when I buy a vitamin c it usually smells like I’m putting battery fluid.

      2. Since it’s my second bottle, I know it’s slow process but I do notice it’s no irritation (redness or acne flare ups)

      3. This vitamin c will last you more than a month without looking its quality.

      4. Lastly, the customer support has been incredible. Yes you are paying $155 or so but you won’t go wrong.

      EffectivenessRated 5.0 on a scale of 1 to 5
      Was this helpful?
    • Kris T.
      OH, United States
      Verified Buyer
      I recommend this product
      Age 55-64
      Gender Female
      Rated 5 out of 5 stars
      January 17, 2026
      It’s a game changer!!

      Love this product in the AM to give my skin that smooth, gorgeous, glassy sheen pre-moisturizer & make up! I highly recommend it!

      EffectivenessRated 5.0 on a scale of 1 to 5
      Was this helpful?
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