Obagi Professional-C Serum 20%
Evidence-led ingredient analysis, a transparent clean score out of 100 and cleaner, effective alternatives at three price levels.
Obagi
Professional-C Serum 20%
Facial Serum · Budget: £110.00
4.6 (420 reviews)· across LookFantastic UK, Dermstore, Amazon UK, SkinCity UK
Ingredients: AI-inferred — not yet verified
Potent 20% L-ascorbic acid serum, though formulation was inferred and contains alcohol denat and synthetic fragrance.
Hazard categories
Estimated score out of 100
Formulation score is fixed across Selenssa · Community effectiveness awaiting more reports
Based on publicly available ingredients, following our methodology. Not medical advice — always check the physical label, especially for allergies. How we score →
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A strong option for resilient, non-sensitive skin seeking maximum vitamin C potency, but avoid if sensitive to alcohol or fragrance.
Be cautious if
Users with sensitive, dry, or barrier-compromised skin due to alcohol denat and fragrance.
Against your clean standard
Partially. Lacks endocrine disruptors or harsh preservatives, but includes drying alcohol denat and synthetic parfum.
Where this score comes from
- Source
- No source record on file yet
- Source page
- —
- Retrieved
- —
- Evidence snapshot
- Not captured
Score history
No score changes have been recorded for this product yet.
Think something here is wrong? Report a correction · How we score
Does Obagi Professional-C Serum 20% contain parabens, sulfates or fragrance?
A straight yes or no for the ingredient groups people most often want to avoid, checked against this product's published formulation.
Free from parabens
Preservatives; the longer-chain ones (propyl, butyl) carry the endocrine questions.
Free from sulfates (sls / sles)
Strong cleansing agents that can strip a compromised barrier.
Free from silicones
Slip and occlusion; cyclic silicones (D4/D5/D6) are the environmentally restricted ones.
Contains fragrance / parfum
Found: fragrance (parfum). Undisclosed fragrance blends are the most common trigger for sensitised skin.
Free from essential oils
Naturally derived, but among the most frequently reported contact allergens.
Contains drying alcohol
Found: alcohol denat.. Fine in small amounts for texture; high up the list it can dehydrate.
Free from formaldehyde releasers
Preservatives that slowly release formaldehyde.
Free from chemical uv filters of concern
Restricted or debated filters with endocrine or reef-persistence questions.
Is Obagi Professional-C Serum 20% non-comedogenic?
No ingredients in this formulation appear on Selenssa's common pore-clogger list, so it is unlikely to be the cause of congestion for most people. Comedogenicity is still individual — texture, occlusion and how much you use all play a part.
Is Obagi Professional-C Serum 20% safe for sensitive skin?
Usually tolerated, but patch test if your skin reacts easily.
- Contains fragrance or parfum
- Contains a drying alcohol
Ingredients worth knowing about: Alcohol Denat., Fragrance (Parfum).
Obagi Professional-C Serum 20% full ingredients list
7 ingredients analysed, in the order Selenssa assessed them. Concentration generally falls as you move down the list.
Ascorbic Acid, Water (Aqua), Propylene Glycol, Alcohol Denat., Fragrance (Parfum), Ethoxydiglycol, Sodium Hyaluronate.
The actives doing the work: Ascorbic Acid (Potent 20% L-ascorbic acid boosts collagen synthesis and brightens hyperpigmentation.); Sodium Hyaluronate (Attracts and retains hydration within skin layers to plump fine lines.).
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