What are the best vitamin C serums?
Serums & AmpoulesNamed in 2 of 6 answers
#10
16.0
Rank by surface
Microsoft Copilot#3
Claude#4
Microsoft Copilot#3Claude#4Brand profile
Obagi Medical Professional-C Serum 20%
A professional-grade vitamin C serum by Obagi Medical, available in various concentrations to provide antioxidant protection and brighten skin.
2 questions · 2 categories · As of Nov 12, 2026
- Best category rank
- #52
- Serums & Ampoules · of 137
- Questions
- 2
- 2 categories
- Answers naming it
- 4/12
- Of the answers measured on this brand's questions
Visibility by category
| Categories | Category rank | Questions | Score |
|---|---|---|---|
| Serums & Ampoules | #52of 137 | 1 | 16.0 |
| Dermocosmetics & Acne Care | #58of 182 | 1 | 14.1 |
Ranking by question
What are the best products for hyperpigmentation?
Dermocosmetics & Acne CareNamed in 2 of 6 answers
#12
14.1
Rank by surfaceClaude#6Microsoft Copilot#6
Claude#6Microsoft Copilot#6Named alongside in Serums & Ampoules
Brands named in the same answers as Obagi Medical Professional-C Serum 20% in the last four weeks, counted in answers.
- 13SkinCeuticals C E Ferulic
- 22La Roche-Posay Mela B3 Serum
- 32Naturium Vitamin C Complex Serum
- 42SkinCeuticals Discoloration Defense
- 52Sunday Riley C.E.O. 15% Vitamin C Brightening Serum
- 62The Ordinary Alpha Arbutin 2% + HA
- 71BeautyStat Universal C Skin Refiner
- 81CeraVe Skin Renewing Vitamin C Serum
- 91Cetaphil Healthy Radiance Antioxidant-C Serum
- 101COSRX Alpha-Arbutin 2 Serum
- 111Dr. Barbara Sturm The Good C
- 121Eadem Milk Marvel Dark Spot Serum
- 131Elta MD UV Clear
- 141Hyper Skin Brightening Dark Spot Serum
- 151ISDIN
- 161Kiehl's Ultra Pure 5% Niacinamide Serum
- 171L'Oréal Paris Revitalift 12% Pure Vitamin C Serum
- 181Mad Hippie
- 191Mad Hippie Vitamin C Serum
- 201Medicube Kojic Acid Turmeric Niacinamide Serum
Sources cited when this brand is named
Sites the answers naming this brand cited in the last four weeks. Counts are citing answers.
| Rank | Source | Citing answers |
|---|---|---|
| 1 | consumerhealthdigest.com | 3 |
| 2 | dermstore.com | 2 |
| 3 | healthline.com | 2 |
| 4 | nbcnews.com | 2 |
| 5 | fortune.com | 2 |
| 6 | cosmopolitan.com | 1 |
| 7 | dermington.com | 1 |
| 8 | dermondemand.com | 1 |
| 9 | dridriss.com | 1 |
| 10 | editorialist.com | 1 |
Named by surface, by question
For the brand's best questions: of each surface's 1 answers, how many named it.
| Questions |  Google AI Overviews |  ChatGPT | Claude |  Gemini | Google AI Mode | Microsoft Copilot |
|---|---|---|---|---|---|---|
| 1What are the best vitamin C serums? | 0 | 0 | 1 | 0 | 0 | 1 |
| 2What are the best products for hyperpigmentation? | 0 | 0 | 1 | 0 | 0 | 1 |