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
176 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...
      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
    4.6
    Rated 4.6 out of 5 stars
    Based on 176 reviews
    Write a Review (Opens in a new window)
    176 reviews
    • marie n.
      AL, United States
      Verified Buyer
      I recommend this product
      Age 55-64
      Gender Female
      Rated 5 out of 5 stars
      December 28, 2025
      Newbie to Obagi products

      I do see a noticeable change; especially in my 'number 11' lines between my eyes. Sixty-two-yrs-old. Not sure if this or the plant based Kinetin moisturizer is blocking my pores. That I need to figure out- a definite negative for my skin.

      EffectivenessRated 5.0 on a scale of 1 to 5
      Was this helpful?
    • catherine s.
      NY, United States
      Verified Buyer
      I recommend this product
      Age 55-64
      Gender Female
      Rated 5 out of 5 stars
      December 18, 2025
      Best C serum

      My skin is glowing with this product

      It’s the best C serum I have used

      I love it!

      EffectivenessRated 5.0 on a scale of 1 to 5
      Was this helpful?
    • Janet l.
      NH, United States
      Verified Buyer
      I recommend this product
      Age Over 65
      Gender Female
      Rated 5 out of 5 stars
      December 17, 2025
      The best product on the market

      I have used Obagi Vitamin C 20% for fifteen years and I wouldn’t miss one morning

      I am 71 years old. And as you can see, no wrinkles. I owe this to Dr John Mallen plastic surgeon who I introduced me to Obagi years ago

      Thank you

      EffectivenessRated 5.0 on a scale of 1 to 5
      Was this helpful?
    • Veronica C.
      AL, United States
      Verified Buyer
      I recommend this product
      Gender Female
      Rated 5 out of 5 stars
      December 16, 2025
      Obagi serum

      So good I subscribed and saved !!!

      EffectivenessRated 5.0 on a scale of 1 to 5
      Was this helpful?
    • Dawn G.
      AL, United States
      Verified Buyer
      I recommend this product
      Age 55-64
      Gender Female
      Rated 5 out of 5 stars
      December 15, 2025
      Fabulous fond

      Brightens skins lightens dark spots.

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