OBAGI Medical Professional-C® Serum 20% 30ml

OBAGI Medical Professional-C® Serum 20% is a high-strength Vitamin C serum formulated with 20% L-ascorbic acid to brighten, even skin tone, and defend against environmental stressors. Designed for normal to oily and combination skin types, this fast-absorbing formula delivers powerful antioxidant protection while supporting smoother, more radiant skin.

Enriched with sodium hyaluronate, it helps maintain hydration while improving the appearance of fine lines, wrinkles, and dark spots. This bestselling serum helps combat oxidative stress induced by blue light and infrared radiation, promoting a visibly brighter, more youthful-looking complexion.

Key Information

• 20% L-ascorbic acid for advanced antioxidant protection

• Brightens and evens skin tone

• Reduces the appearance of dark spots

• Helps improve fine lines and wrinkles

• Defends against oxidative stress from blue light and infrared exposure

• Fast-absorbing formula ideal for normal to oily skin

Backed By Clinical Data

• 91% of users reported skin appeared brighter and more hydrated

Survey analysis conducted April 28, 2010. Data on file at Obagi Cosmeceuticals LLC.
2023 In-Vitro Antioxidant Potential Assay. Data on file at Obagi Cosmeceuticals LLC.

Key Ingredient

L-ascorbic Acid
The purest form of Vitamin C, L-ascorbic acid helps neutralize free radicals, minimize the appearance of fine lines and wrinkles, and visibly brighten skin tone.

How To Use

Apply 5 to 7 drops in the morning after cleansing and toning, before moisturiser.
Follow with broad-spectrum SPF before makeup application.

Use within 3 to 6 months after opening.

Storage

Store at a controlled temperature not exceeding 25°C (77°F).
Keep out of direct sunlight.
Store in a cool, dark place after opening and ensure the cap is tightly closed when not in use.

Safety Information

For external use only.
Avoid direct contact with eyes, nose, mouth, and lips.

Some users may experience slight tingling upon application. This should diminish with continued use. If tingling becomes severe, discontinue use and consult a healthcare professional.

Full Ingredients

Propylene Glycol, Aqua/Water/Eau, Ascorbic Acid, Alcohol Denat., Ascorbyl Glucoside, Ethoxydiglycol, Sorbitol, Sodium Hyaluronate, Fragrance (Parfum), Citrus Aurantium Dulcis (Orange) Peel Extract, Citrus Paradisi (Grapefruit) Fruit Extract, Phenoxyethanol, Calcium Hydroxide, Zinc Chloride, Citric Acid, Caprylyl/Capryl Glucoside, Amyl Cinnamal, Limonene, Hexyl Cinnamal, Benzyl Benzoate.