Obagi Medical
Obagi Vitamin C Serums
Shop the Obagi vitamin C serum range: Obagi Professional-C Serum in 10%, 15% and 20% L-ascorbic acid, plus Obagi-C Fx Clarifying Serum, for a brighter, more even skin tone and daily antioxidant protection.
Professional-C comes in three strengths. 10% is the gentlest and suits dry or sensitive skin. 15% is the everyday strength for normal to dry skin. 20% is the most potent and suits normal to oily skin. Obagi-C Fx Clarifying Serum, from the Obagi-C Fx system, pairs vitamin C with arbutin to target dark spots and uneven tone.
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Your skin, checked every time you collect
Every order is collected at a clinic appointment you choose. Collect your products, have your skin scanned and see how it is improving.
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Order online
Choose your Obagi products online and pay securely. We do not deliver; everything is collected in clinic.
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In your basket, choose a date and time to visit our Rainford clinic.
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Visit the clinic
Complete your consultation form, have your Observ 520x face scan and collect your products.
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Come back every order
Each time you restock, we scan your skin again and compare it with your last visit, so you can check your progress.
We're with you between visits. Message our skin team on WhatsApp any time for advice on your routine.
All orders are collected from our clinic at 38 Church Road, Rainford. We do not offer delivery.
Comparison
Compare Professional-C serums
Same formula family, three strengths. Start lower if you are new to vitamin C.
Professional-C Serum 10%
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Professional-C Serum 15%
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Professional-C Serum 20%
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| 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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How to use your Obagi vitamin C serum
Vitamin C is an antioxidant. Used in the morning, it helps protect skin from free radicals caused by UV and pollution, the daily damage that leads to dullness, dark spots, hyperpigmentation and fine lines. Over time it also supports collagen production for smoother, healthier-looking skin.
L-ascorbic acid is the most researched form of vitamin C, but it is also the most fragile. Keep the bottle closed and away from heat and light.
- Cleanse, then pat your skin dry.
- Apply a few drops of Professional-C to cleansed skin on the face and neck with your fingertips.
- Let it absorb, then apply your moisturiser.
- Finish with a broad spectrum SPF50 before makeup.
Expert advice
Expert tip: vitamin c serums
“Use vitamin C in the morning, under SPF, on dry skin. If you are new to L-ascorbic acid, start with 10% and move up once your skin is used to it. Keep the bottle closed and away from heat and light so it stays effective.”
Hannah Clarke, Founder, HC Skin
Book a skin analysisObagi Vitamin C Serums: your questions
Which Professional-C strength should I choose?
Start with 10% if your skin is sensitive or new to vitamin C. Choose 15% for normal to dry skin and 20% for normal to oily skin.
Is Obagi vitamin C worth it?
If dullness, uneven tone or dark spots are your main concern, an L-ascorbic acid serum is one of the most useful morning steps. Professional-C lets you choose a strength to suit your skin, and your monthly Observ 520x scan shows how your complexion is changing.
What mistakes should I avoid with vitamin C serum?
Starting too strong, applying it to damp skin, skipping sunscreen and storing it in a warm, bright bathroom. Each can cause irritation or make the serum less effective.
Is it normal for vitamin C serum to tingle?
A slight tingle is common with L-ascorbic acid. If it stings or your skin goes red, move to a lower strength.
Can I use vitamin C with retinol?
Yes. Use vitamin C in the morning and retinol at night.
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Worth £50, free when you spend £200
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