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
165 Reviews

SERUM 20%

Vitamin C Serum For Normal to Oily Skin

Regular price $150.00
Size

SERUM 20%

Best for
Skin Discoloration - color
Skin Discoloration

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
    4.6
    Rated 4.6 out of 5 stars
    Based on 165 reviews
    165 reviews
    • Deborah L.
      AZ, United States
      Verified Buyer
      I recommend this product
      Age 55-64
      Gender Female
      Rated 5 out of 5 stars
      November 24, 2025
      Amazing

      Truly amazing product. I’m a life time customer

      EffectivenessRated 5.0 on a scale of 1 to 5
    • Kelly
      I recommend this product
      Rated 5 out of 5 stars
      November 24, 2025
      5 Stars

      Love this vitamin c serum. My skin loks and feels great!

    • Marty S.
      CA, United States
      Verified Buyer
      I recommend this product
      Age Over 65
      Gender Female
      Rated 5 out of 5 stars
      November 23, 2025
      Very nice product!

      I’m on my second bottle of C Serum and I have seen a noticeable improvement in my skin tone. I have been a lifelong outdoors person so I’ve done some damage to my skin. This serum has really evened out my brown spots to the point that I don’t see many left! I might start using it on my hands too.

      EffectivenessRated 5.0 on a scale of 1 to 5
    • Jenny B.
      NY, United States
      Verified Buyer
      I recommend this product
      Age Over 65
      Gender Female
      Rated 5 out of 5 stars
      November 18, 2025
      Obagi Serum 20%

      LOVED this serum and will continue to use it. I have normal to oily mature skin and this serum is a game changer. It is absorbed quickly and brightens my skin without feeling oily. I plan to try the Light Hydrate and Clenziderm Pore Therapy next.

      EffectivenessRated 5.0 on a scale of 1 to 5
    • Allison
      I recommend this product
      Rated 5 out of 5 stars
      November 14, 2025
      5 Stars

      Staple product in my skincare