Obagi Professional-C Serum 20% – 30ml
Taxes VAT & duties included — no surprise fees at delivery
✓ 100% Authentic · sourced from authorised suppliers
✓ Free UK delivery on orders over £50
✓ 30-day returns on unopened items · 24,000+ customers since 2021
Obagi Professional-C Serum 20% is a 30ml high-strength vitamin C serum from the US clinic skincare brand Obagi, with 20% L-ascorbic acid for the most radiant look in the range, suited to resilient or oilier skin and experienced vitamin C users.
What it does
Professional-C Serum 20% is the strongest in Obagi's vitamin C range, carrying 20% L-ascorbic acid, the pure form of vitamin C, for skin that can take it. Used every morning, it helps dull, uneven-looking skin look markedly brighter, supports a more even look of tone over time and gives daily antioxidant defence against the environmental stress that leaves a complexion looking tired. The fluid texture absorbs quickly and layers under moisturiser and SPF without pilling. At this strength a brief tingle on application is normal for some skins, which is why it is best suited to resilient, oilier complexions or those already used to vitamin C.
How to use
In the morning, apply a few drops to clean, dry skin and smooth over the face and neck before moisturiser. If you are new to high-strength vitamin C, introduce it gradually, starting every other day. Always follow with a broad-spectrum SPF and store away from heat and light. Patch-test first.
Who it's for
Experienced vitamin C users wanting the maximum strength Obagi offers, and resilient, normal to oily skin that wants the brightest possible look. Sensitive or reactive skin is better served by the 10% serum.
Why buy from GlamGlobal
GlamGlobal stocks Obagi in the UK with tracked UK delivery – alongside our wider clinical skincare range – so the strongest Professional-C is here when your skin is ready to step up.
Free UK delivery on orders over £50; £4.95 under £50. Orders are dispatched within 1–3 working days, then take 5–10 working days to arrive in the UK. USA from £6.95; Europe from £9.95; rest of world from £14.95.
30-day returns on unused, unopened products in original packaging. For hygiene reasons, opened beauty products can only be returned if faulty. Email support@glamglobal.com to start a return.
100% Genuine — Guaranteed.
Every product we sell is 100% genuine, sourced from authorised suppliers and brand distributors in South Korea, Japan and the United States. Since 2021, more than 24,000 customers have shopped with GlamGlobal. If anything arrives damaged or faulty, email support@glamglobal.com and we will refund or replace it.
Choose options