Obagi Professional-C Serum 20%
Authorised Obagi provider · genuine UK stock
£170.00
Tax included. Collected from our Rainford clinic. Size: 30ml.
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Overview
Obagi Professional-C Serum 20% is the strongest serum in Obagi's best-selling vitamin C range.
Key ingredients
L-Ascorbic Acid, Sodium Hyaluronate.
Full ingredients (INCI)
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.
Ingredients can change. Always check the list on your pack before use.
Safety information
For external use only. Avoid direct contact with eyes, nose, mouth and lips. Some users of this product may experience a slight tingling, which should diminish with continued use. If tingling becomes severe, stop use and consult a doctor.
Patch test on a small area 24 hours before first use. Stop using and seek advice if irritation, redness or swelling persists.
Store away from heat and light, and keep the cap closed between uses.
If you have a skin condition or take prescribed medication, ask our team at your collection appointment.
What Professional-C Serum 20% does
Obagi Professional-C Serum 20% is the strongest serum in Obagi's best-selling vitamin C range. It is best for normal to oily skin that already tolerates vitamin C and wants maximum brightening and antioxidant support.
This Obagi vitamin C serum combines 20% L-ascorbic acid, the purest form of vitamin C, with sodium hyaluronate for hydration. It helps brighten and even skin tone, fade the look of dark spots, soften fine lines and neutralise free radicals. Obagi states it is clinically proven to improve radiance within four weeks and helps defend against oxidative stress from blue light and infrared. New to vitamin C? Start with the 10% or 15% strength. A slight tingle is normal and should settle with use.
Key benefits
- Brightens and evens skin tone
- Visibly fades dark spots
- Antioxidant defence against free radicals
- Hydrating, fast-absorbing serum
How to use Professional-C Serum 20%
After cleansing and toning, press 5 to 7 drops into the skin before moisturiser, then apply SPF in the morning. Use within 3 to 6 months of opening.
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Compare Professional-C serums
Same formula family, three strengths. Start lower if you are new to vitamin C.
Professional-C Serum 10%
|
Professional-C Serum 15%
|
Professional-C Serum 20%
Viewing | |
|---|---|---|---|
| Strength | 10% L-ascorbic acid | 15% L-ascorbic acid | 20% L-ascorbic acid |
| Best for | First vitamin C, drier or more reactive skin | Most skin types, everyday brightening | Experienced users, oilier skin, stubborn dullness |
| When to use | Morning, under SPF | Morning, under SPF | Morning, under SPF |
| Key ingredients | L-Ascorbic Acid | L-Ascorbic Acid | L-Ascorbic Acid, Sodium Hyaluronate |
| Size | 30ml | 30ml | 30ml |
| Price | £125.00 | £145.00 | £170.00 |
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Professional-C Serum 20%: your questions
How do I use Professional-C Serum 20%?
After cleansing and toning, press 5 to 7 drops into the skin before moisturiser, then apply SPF in the morning. Use within 3 to 6 months of opening. Full directions are on the packaging.
Is Professional-C Serum 20% right for my skin?
Professional-C Serum 20% is designed for normal to oily skin. It is a good choice for fine lines & wrinkles, pigmentation & dark spots. Not sure? Book a free skin analysis.
What can I use with Professional-C Serum 20%?
Professional-C Serum 20% works well with Obagi Daily Hydro-Drops Facial Serum and Obagi Daily Hydro-Drops Rejuvenating Eye Gel Cream. Finish your morning routine with SPF50.









