What are the best vitamin C serums?
Serums & AmpoulesNamed in 4 of 6 answers
#4
27.6
Rank by surface
Google AI Mode#5
Gemini#7
Claude#10
Microsoft Copilot#11
Google AI Mode#5Gemini#7Claude#10Microsoft Copilot#11Brand profile
Sunday Riley C.E.O. 15% Vitamin C Brightening Serum
A popular vitamin C serum by American brand Sunday Riley, featuring 15% THD Ascorbate, a potent and stable form of vitamin C, for brightening and antioxidant benefits.
1 questions · 1 categories · As of Nov 1, 2026
- Questions
- 1
- 1 categories
- Answers naming it
- 4/6
- Of the answers measured on this brand's questions
Visibility by category
| Categories | Category rank | Questions | Score |
|---|---|---|---|
| Serums & Ampoules | - | 1 | 27.6 |
Ranking by question
Sources cited when this brand is named
Sites the answers naming this brand cited in the last four weeks. Counts are citing answers.
The answers that named this brand cited no sources in the last four weeks.
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 | 1 | 1 | 1 |