Obagi Medical Vitamin C Serum 10% L-ascorbic Acid, 1 fl. oz. — Brightens Skin & Smooths Fine Lines

Obagi 10% Professional-C Serum is a concentrated L-ascorbic acid vitamin C serum designed to brighten skin tone and reduce the visible signs of aging while supporting skin barrier resilience.

This lightweight, physician-developed serum contains 10% pure L-ascorbic acid formulated at a skin-friendly pH to balance stability and absorption. It’s intended for morning use as part of a layered skincare routine and pairs well with broad-spectrum sunscreen to help protect and preserve visible results. Obagi’s Professional-C line focuses on delivering clinical-strength vitamin C in an everyday texture that layers smoothly under moisturizers and makeup.

How will this serum affect my skin’s brightness and texture?

The L-ascorbic acid in this formula targets uneven tone and helps improve the look of dullness by encouraging a more radiant appearance. Visible textural improvements such as softened fine lines and a smoother surface are commonly reported when the serum is used consistently. Results depend on skin type, baseline condition, and adherence to a routine that includes sun protection.

• Contains 10% pure L-ascorbic acid for antioxidant and brightening support
• Formulated at pH values that enhance stability and skin penetration
• Lightweight texture absorbs quickly and layers under other products
• Best combined with daily SPF for optimal visible outcomes

Is this suitable for sensitive or reactive skin?

Because it uses a potent form of vitamin C, some people with sensitive skin may experience temporary tingling or mild irritation. Start slowly—apply every other morning and increase frequency as tolerated. If irritation occurs, reduce use and consult a skincare professional for guidance.

• Begin with a small patch test on the inner forearm
• Introduce to routine gradually to monitor tolerance
• Pair with soothing, non-irritating moisturizers if needed
• Discontinue if persistent redness or discomfort appears

How should I integrate this serum into my daily skincare routine?

Use the Obagi 10% Professional-C Serum in the morning after cleansing and before applying moisturizer and sunscreen. Vitamin C works synergistically with sunscreen to help preserve skin appearance, so sunscreen is an essential final step. For an evening regimen, keep vitamin A or retinol products separate and apply them at night to complement daytime vitamin C use.

• AM: cleanse → Obagi 10% Professional-C Serum → moisturizer → broad-spectrum SPF
• Avoid layering with other strong actives at the same time to reduce irritation risk
• Store away from direct sunlight to maintain product stability
• Use consistently for several weeks to see gradual improvements

What makes Obagi’s formulation different from other vitamin C serums?

Obagi uses L-ascorbic acid, widely regarded as a highly active form of vitamin C when properly formulated. The 10% concentration is chosen to balance efficacy with everyday tolerability, offering a middle-ground strength for many users. Additionally, Obagi’s medical-grade approach focuses on clinical testing and physician endorsement, reflecting decades of product development and research in professional skincare.

• Pure L-ascorbic acid form at a clinically considered concentration
• pH-adjusted to aid stability and skin absorption
• Designed for layering with SPF and other daily essentials
• Backed by Obagi’s medical skincare heritage and testing

Who is this for: Obagi 10% Professional-C Serum is aimed at anyone seeking a reliable morning antioxidant to brighten skin tone, support an improved surface texture, and complement daily sun protection. It is a solid option for first-time vitamin C users who want a clinically minded formula, as well as for experienced users looking for a moderate-strength L-ascorbic acid serum. Those with very reactive skin should introduce it cautiously or seek professional advice.

Ingredients

Propylene glycol, water, propylene carbonate, L-ascorbic acid, fragrance