Ascorbic Acid ↗
3 selected studies
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Obagi
Serums · 1.0 fl oz
12 label entries · 11 linked ingredients
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Obagi Professional-C Serum 20% is a concentrated Vitamin C serum that delivers a youthful, radiant complexion. The earlier you add a vitamin C serum to your routine, the longer your complexion will remain youthful and radiant. Obagi Professional-C Serum 20 is a concentrated serum with 20% vitamin C that provides multiple benefits for the complexion. This ingredient neutralizes free radicals that break down collagen and elastin causing damage and leading to fine lines, wrinkles and dark spots. Vitamin C also promotes collagen production which plumps skin and reduces the look of wrinkles. The formula is ideal for normal, combination and oily skin types, and it absorbs quickly without leaving the complexion greasy or oily. Key Features: 20% L-ascorbic acid promotes an even tone and texture Advanced form of vitamin C absorbs five times more easily than other serums Neutralizes free radicals before they can cause damage to the complexion Please note: Due to a raw material change in the formula, the scent of the Obagi Professional-C Serum 20% has changed slightly. The fragrance notes, the fragrance percentage, and the functionality and results remain the same.
Description from LovelySkin skincare bestsellers · Recorded Aug 9, 2026. Product claims have not been independently verified.
The product, unpacked
Listed in label order. Position does not establish an exact concentration. Ingredient roles describe possible uses and can vary with the finished formula.
SD Alcohol 39-C, Propylene Glycol, Water, Ascorbic Acid, Ascorbyl Glucoside, Ethoxydiglycol, Phenoxyethanol, Sorbitol, Sodium Hyaluronate, Zinc Chloride, Calcium Hydroxide, Fragrance
11 of 12 entries are linked to ingredient pages below. Unmatched names remain in the original list above.
Formula provenance
Retailer source · united-states
Recorded Aug 9, 2026
Formula source ↗Formulas can vary by market and change over time. Check the ingredient list on your own pack.
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These studies concern ingredients listed or declared for this product. They do not establish that this exact formula reproduces a study result, dose or delivery method.
3 selected studies
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Read the findings and limits ↗1 selected study
Read the findings and limits ↗1 selected study
Read the findings and limits ↗1 selected study
Read the findings and limits ↗1 selected study
Read the findings and limits ↗2 selected studies
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