Obagi Medical Professional-C Serum 20% Review | SkinSourcer
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The Shelf · The Long Game: Skincare Judged in Months, Not Mornings

Obagi Medical Professional-C Serum 20%
No. 02 in Edit 048

Obagi Medical Professional-C Serum 20%

Serums USA Approx. $155

The dermatologist office vitamin C, at the concentration the office actually stocks. Twenty percent L-ascorbic acid in a cobalt bottle, no perfume on the story, and a brand that has sold through physicians since before serums were content.

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Why we like the Professional-C Serum 20%

  • The strength on the label is the point of the product
  • A dropper you can actually meter
  • A brand with a physician-channel record rather than a launch calendar
Texture
A classic watery vitamin C in a cobalt dropper bottle
Key ingredients
Vitamin C 20%
Fragrance
Not stated
Best for
Mornings under sunscreen · Skin already comfortable with vitamin C · People who want the strength on the label
Works on
Dullness · Pigmentation · Fine lines
Made in
USA
Where to buy
Obagi Medical
Price
$155, approximate
Listing checked
2026-08-26

Our verdict on the Obagi Medical Professional-C Serum 20%

The strong one, from the counter that takes vitamin C seriously.

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Where the Professional-C Serum 20% sits on The Shelf

Nine professional skincare products arranged on a shelf Edit 048 · THE LONG GAME The Long Game: Skincare Judged in Months, Not Mornings Eleven products with nothing to prove by Friday, chosen for the routine you keep rather than the one you start.

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Reviewed 2026-08-26. Obagi Medical Professional-C Serum 20% appears in The Long Game: Skincare Judged in Months, Not Mornings. Every product on The Shelf is listed in the product index.