OBAGI - Professional-C® Serum 20%

Advanced Brightening & Antioxidant Defence

Obagi Professional-C® Serum 20% is a powerhouse antioxidant treatment featuring a potent concentration of pure L-Ascorbic Acid (Vitamin C) to visibly brighten the complexion, support collagen synthesis, and protect against environmental stressors. Enhanced with moisture-locking Sodium Hyaluronate, this fast-absorbing serum targets uneven skin tone, fine lines, and loss of firmness — making it the ultimate daily defence for a youthful, radiant glow.

Key Benefits

This professional-grade formula delivers Obagi’s highest strength of stabilised Vitamin C, expertly blended for maximum absorption and minimal irritation. Designed for normal to oily skin types, the 20% concentration helps:

• Brighten dull, uneven skin tone
• Reduce dark spots and pigmentation irregularities
• Stimulate collagen and elastin for firmer, smoother skin
• Protect against oxidative stress and environmental damage
• Hydrate and plump with Hyaluronic Acid

How to Apply

Start with freshly cleansed skin. Apply 5–7 drops to your face, neck, and décolleté using your fingertips. Use each morning, followed by a broad-spectrum SPF. For optimal results, use consistently and avoid combining with other exfoliating acids without guidance.

Key Ingredients

• 20% L-Ascorbic Acid (Vitamin C) — A powerful antioxidant that neutralises free radicals and visibly evens skin tone.
• Sodium Hyaluronate — A form of hyaluronic acid that locks in hydration for a plumper, healthier look.
• Ascorbyl Glucoside & Sorbitol — Stabilisers that enhance the serum’s delivery and efficacy.
• Zinc Chloride & Calcium Hydroxide — Skin-supportive minerals that improve texture and absorption.

Full Ingredient List

Propylene Glycol, Water, L-Ascorbic Acid (20%), Alcohol, Ascorbyl Glucoside, Ethoxydiglycol, Phenoxyethanol, Sorbitol, Sodium Hyaluronate, Zinc Chloride, Calcium Hydroxide, Fragrance.

Ingredient lists may vary depending on your region or batch. Always refer to the packaging for the most current information.

Ideal For

• Dull, uneven, or sun-damaged skin
• Early signs of ageing, including fine lines and loss of elasticity
• Normal, combination, or oily skin types
• Individuals looking to boost radiance while defending against environmental aggressors

Frequently Asked Questions

What is the difference between Obagi Professional-C 10%, 15%, and 20%?

The 10% is ideal for sensitive or first-time Vitamin C users. The 15% suits normal to combination skin. The 20% is Obagi’s most potent concentration, best suited to oily or resilient skin types seeking maximum brightening, firming, and antioxidant results.

Is 20% Vitamin C too strong for my skin?

The 20% concentration is recommended for normal to oily skin types with prior Vitamin C experience. If you have sensitive or dry skin, start with the 10% or 15% and build up gradually.

When should I apply this serum?

Apply every morning to clean, dry skin before moisturiser and SPF. Vitamin C works synergistically with sunscreen to provide enhanced antioxidant protection throughout the day.

How long does it take to see results?

Most users notice visible improvements in brightness and skin tone within 4–6 weeks. Firming and fine line reduction typically develop over 8–12 weeks of consistent daily use.

Can I use this serum with retinol or niacinamide?

Yes — apply Vitamin C in the morning and retinol in the evening. Niacinamide can be used in the same routine. Avoid combining with strong exfoliating acids without professional guidance.