
Obagi
Obagi Professional-C 20% Vitamin C Serum
- Brightens and evens skin tone
- Reduces appearance of dark spots
- Strengthens antioxidant defenses
Medically Verified Stockist
Formulations on Cosmedic Online are vetted and approved by our medical board, directed by Dr. Martyn King (GMC Registered) and Sharon King (RN NIP).
Contents
Clinical Details
Obagi Professional-C 20% Vitamin C Serum is a fast-absorbing serum designed to brighten and even skin tone while reducing the appearance of dark spots. Formulated with L-Ascorbic Acid, the purest form of Vitamin C, this serum helps to neutralize free radicals and combat oxidative stress. Ideal for normal to oily skin types.
Evidence-Based Efficacy
Research indicates that antioxidants like Vitamin C can effectively combat oxidative stress, which is linked to skin aging. For more information, see the studies: The Role of Oxidative Stress in Skin Disorders Associated with Alcohol Dependency and Antioxidant Therapies and Topical anti-inflammatory treatments for eczema: network meta-analysis.
Active Ingredients
Full Ingredients List
Propylene glycol, aqua/water/eau, ascorbic acid, alcohol denat., ascorbyl glucoside, ethoxydiglycol, phenoxyethanol, sodium hyaluronate, sorbitol, citrus aurantium dulcis (orange) peel extract, citrus paradisi (grapefruit) fruit extract, fragrance (parfum), caprylyl/capryl glucoside, calcium hydroxide, zinc chloride, citric acid, benzyl benzoate, amyl cinnamal, limonene, hexyl cinnamal.
Directions for 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.
L-ascorbic acid (pure vitamin C) is known to change color with time, however oxidation is minimal in Obagi antioxidants and the formulation is proven to remain effective.
Safety Information
For external use only. Avoid direct contact with eyes, nose, mouth, and lips. Some users may experience slight tingling, which should diminish with continued use. If tingling becomes severe, stop use and consult a doctor.







