Allure Best of Beauty Award Seal 2025
SERUM 20%
SERUM 20%
SERUM 20%
SERUM 20%
SERUM 20%
SERUM 20%
BESTSELLER
4.5
Rated 4.5 out of 5 stars
142 Reviews
PROFESSIONAL-C® ,

SERUM 20%

Vitamin C Serum For Normal to Oily Skin

$150.00
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...
      Professional C® Serum 15% 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. For ...
      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
      Skin Discoloration - color
      Skin Discoloration
      Skin Discoloration - color
      Skin Discoloration
      Sensitive Skin - color
      Sensitive Skin
      Skin Discoloration - color
      Skin Discoloration
      Skin Discoloration - color
      Skin Discoloration
      Skin Types
      Normal to OilyCombination
      Normal to DryCombination
      Normal to OilyNormal to DryCombination
      Normal to OilyNormal to DryCombination
    4.5
    Rated 4.5 out of 5 stars
    Based on 142 reviews
    Write a Review (Opens in a new window)
    142 reviews
    • Brittany S.
      IN, United States
      Verified Buyer
      I recommend this product
      Age 35-44
      Gender Female
      Rated 5 out of 5 stars
      September 29, 2025
      Skin texture improvement

      I have been using the 20% serum for a month and have noticed an improvement in my skin tone and texture. This is a new staple and I have put it on subscription.

      EffectivenessRated 5.0 on a scale of 1 to 5
      Was this helpful?
    • Teri F.
      OH, United States
      Verified Buyer
      I recommend this product
      Age Over 65
      Gender Female
      Rated 5 out of 5 stars
      September 29, 2025
      Love the 20%

      This vitamin C serum absorbs well, and it's the only 20% serum I've been able to fine. My skin doesn't get irritated by the 20% formulation, and I also use a few drops on my hands and neck. Vitamin C is a must have product for me and Obagi is my go to for it.

      EffectivenessRated 4.0 on a scale of 1 to 5
      Was this helpful?
    • KAYLA
      I recommend this product
      Rated 5 out of 5 stars
      September 18, 2025
      5 Stars

      I absolutely love this vit c serum! My face is so soft!

      Was this helpful?
    • Suzanne K.
      UT, United States
      Verified Buyer
      I recommend this product
      Age Over 65
      Gender Female
      Rated 5 out of 5 stars
      September 5, 2025
      Vitamin C

      Brightens my skin immediately. Best serum I’ve tried. On my third bottle.

      EffectivenessRated 5.0 on a scale of 1 to 5
      Was this helpful?
    • Chelsi Z.
      Flag of United States
      Verified Buyer
      I recommend this product
      Age 35-44
      Gender Female
      Rated 5 out of 5 stars
      July 30, 2025
      Amazing brightening serum

      This serum is amazing. I started noticing a major difference within a couple weeks. My skin looks so much healthier.

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