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
222 Reviews
PROFESSIONAL-C® ,

SERUM 20%

Vitamin C Serum For Normal to Oily Skin

$155.00
Size
SERUM 20%

SERUM 20%

Free 30-Day 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.

Best of Beauty - SKIN - Best Antioxidant Facial Serum by Allure, 2025

Editor's Choice Awards - Dermatologist Favorite Vitamin-C Serum by Oprah Daily, 2025

    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
      Skin Discoloration - color
      Skin Discoloration
      Skin Discoloration - color
      Skin Discoloration
      Sensitive Skin - color
      Sensitive Skin
      Skin Discoloration - color
      Skin Discoloration
      Skin Types
      Normal to OilyCombination
      Normal to DryCombination
      Normal to OilyNormal to DryCombination
    4.6
    Rated 4.6 out of 5 stars
    Based on 222 reviews
    Reviews Summary
    Customers say this serum applies smoothly and absorbs quickly without leaving skin greasy. Many report immediate brightening effects and a noticeable glow that lasts throughout the day. Users frequently mention improvements in skin tone evenness, with several noting reduced appearance of dark spots and fine lines over time. The lightweight texture and pleasant scent are commonly praised. Some customers mention it can be slightly drying, particularly when switching from lower concentrations. A few users note concerns about product consistency between bottles, with some receiving clearer formulations than expected. Despite the higher price point, most find the results justify the cost and consider it a skincare staple.
    Write a Review (Opens in a new window)
    222 reviews
    • Giovannina
      I recommend this product
      Rated 5 out of 5 stars
      June 15, 2026
      5 Stars

      Arrived quickly

      Was this helpful?
    • Debra P.
      TX, United States
      Verified Buyer
      I recommend this product
      Age Over 65
      Gender Female
      Rated 5 out of 5 stars
      June 11, 2026
      Great

      Best serum every

      EffectivenessRated 5.0 on a scale of 1 to 5
      Was this helpful?
    • Beverly M.
      NM, United States
      Verified Buyer
      I recommend this product
      Age Over 65
      Gender Female
      Rated 5 out of 5 stars
      May 14, 2026
      I love this

      I am 69 much sun damage, really appreciate this product

      EffectivenessRated 5.0 on a scale of 1 to 5
      Was this helpful?
    • Maria
      I recommend this product
      Rated 5 out of 5 stars
      May 8, 2026
      5 Stars

      Super recomendable 10 de 10

      Was this helpful?
    • Ginie R.
      FL, United States
      Verified Buyer
      I recommend this product
      Age 35-44
      Gender Female
      Rated 5 out of 5 stars
      May 5, 2026
      amazing!

      I was recommended this product by my esthetician during a facial because my skin was dull. I have been using the product for two weeks and I can see the difference already. My skin looks bright and more full of life. I highly recommend it for everyone as part of your routine.

      EffectivenessRated 5.0 on a scale of 1 to 5
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