Obagi Professional-C™ Serum 20%
Obagi Professional-C™ Serum 20% is a high-potency antioxidant treatment designed to brighten the complexion and defend against environmental damage. As a professional-grade formula from Obagi, this serum features a concentrated 20% L-Ascorbic Acid, the purest and most effective form of Vitamin C. The ingredient profile is streamlined, utilizing a base of Propylene Glycol and Alcohol to ensure the active Vitamin C penetrates deeply and efficiently into the skin. This formulation helps to minimize the appearance of fine lines, wrinkles, and hyperpigmentation while promoting a more even skin tone. Texture-wise, the serum is incredibly lightweight and thin, absorbing almost instantly without leaving a sticky or oily residue. The inclusion of Ascorbyl Glucoside provides additional stable antioxidant support. This product is ideal for those seeking a powerful brightening boost that won't feel heavy or suffocating on the skin, providing a smooth, radiant finish that layers well under moisturizer and sunscreen.
Our Analysis
Our analysis of the Obagi Professional-C™ Serum 20% indicates a low comedogenic risk, making it an excellent choice for those concerned about pore congestion. We reviewed the entire ingredient list and found no flagged ingredients known to trigger acne or clog pores. The formula avoids heavy oils, waxes, and thickeners that often cause issues for acne-prone individuals. Instead, it uses a simple delivery system that prioritizes the stability and absorption of L-Ascorbic Acid. Because it is free from common pore-cloggers, it remains a safe and effective option for maintaining clear skin while targeting aging.
Skin Type Recommendations
This serum is best suited for oily, combination, and normal skin types looking for brightening benefits without clogging pores. It is highly recommended for acne-prone skin due to its clean profile. However, those with very dry or highly sensitive skin should patch test first, as the high Vitamin C concentration and alcohol may be drying.
Flagged Ingredients
This product does not contain known high-risk comedogenic ingredients.
Want Deeper Analysis?
Run our MACR (Multi-Axis Comedogenic Risk) analysis to get a comprehensive 5-axis risk assessment. This AI-powered analysis evaluates ingredients for Plugging Risk, Barrier Damage, Fungal Acne Risk, Oxidation Risk, and real-world User Reports — giving you personalized scores for your skin type.
