Obagi Medical Professional-C 20% Vitamin C Serum 0.42 oz — High-Strength Brightening & Hydrating

Obagi Professional-C 20% Vitamin C Serum is a high-strength L-ascorbic acid formula designed to brighten skin tone, support hydration, and reduce the visible appearance of fine lines and wrinkles.

This concentrated serum uses pharmaceutical-grade vitamin C at an optimized pH to improve skin surface radiance and help bolster the skin’s defensive systems. Obagi Medical developed this professional-strength product for use as part of a targeted skincare routine; it is dermatologist-tested and backed by consumer data showing visible improvements in skin brightness and hydration. The lightweight formula is presented in a 0.42 oz bottle ideal for daily use and layering with other treatments.

How does 20% L-ascorbic acid help skin look brighter?

At this concentration, L-ascorbic acid works as a potent antioxidant and skin-brightening agent. It supports the skin’s ability to reflect light more evenly, which can result in a noticeably clearer, more luminous complexion over time.

• High-purity L-ascorbic acid at 20% for strong antioxidant action
• Formulated at a pH that enhances penetration and stability
• Helps counteract visible effects of past environmental damage

Will it help reduce the appearance of fine lines and wrinkles?

The serum is formulated to improve skin texture and the appearance of expression lines when used consistently. By supporting skin hydration and surface smoothness, many users notice a softer, more refined look.

• Concentrated vitamin C to support collagen-related appearance
• Lightweight texture that layers under moisturizers and SPF
• Clinically tested consumer results report improved hydration and brightness

How should I incorporate this serum into my routine?

Apply a small amount to cleansed, dry skin once daily—typically in the morning to pair with sunscreen or at night depending on tolerance. Start slowly if you have sensitive skin, then increase frequency as your skin adjusts.

• Use on clean, dry face before moisturizer and sunscreen
• Begin with every other day application if sensitivity occurs
• Avoid mixing with high-acid exfoliants at the same time to reduce irritation

Is this product suitable for all skin tones and types?

Obagi Medical formulates and tests its professional products across skin types and tones, aiming for broad compatibility. Individuals with sensitive skin should perform a patch test and consult a dermatologist if concerned about reactions.

• Dermatologist-tested formula intended for varied skin types
• Suitable for oily, combination, and normal skin; proceed cautiously with high sensitivity
• Professional-grade concentration—consider professional advice if you have specific concerns

Who is this for: This serum is intended for people seeking a potent, professional-strength vitamin C treatment to boost radiance, support skin texture, and address the visible signs of aging like fine lines. It suits anyone ready to use a high-concentration L-ascorbic acid product within a measured skincare routine—especially those who have used lower-dose vitamin C before and want a stronger, clinically informed option.