Brandwave

Olay vs Sunday Riley:Which is more popular?

In September 2026, Olay had more branded searches than Sunday Riley among vitamin C serum brands worldwide. Olay had about 14,800 branded searches, while Sunday Riley had 2,400. Olay made up 5.5% of all vitamin C serum brand searches we track, and Sunday Riley accounted for 0.9%. When we asked ChatGPT and Google AI Overviews about vitamin C serum brands, Sunday Riley appeared in one of the four answers and Olay in none.

Among vitamin C serum brands worldwide in September 2026

Who do people search for more?

Olay, about 6 searches for every 1 for Sunday Riley

Olay 14.8K searchesSunday Riley 2.4K searches

Who does AI mention more?

Sunday Riley, mentioned in 1 of 4 answers, Olay in 0

Sunday Riley in 1 of 4Olay in 0 of 4

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Top vitamin C serum brands in ChatGPT and Google AI Overviews

In three ChatGPT questions and one Google AI Overview, Sunday Riley was mentioned in one out of four: not in any of the three ChatGPT answers, but in the Google AI Overview. Olay did not appear in any of the four answers.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. SkinCeuticals1st
  2. Timeless Skin Care2nd
  3. Naturium3rd
  4. CeraVe4th
  5. La Roche-Posay5th
  6. Paula's Choice6th
  7. Sunday Riley7th
  8. The Ordinary–
  9. Olay–
  10. Drunk Elephant–
  11. +2 more

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • SkinCeuticals3 of 4Named in 2 of 3 ChatGPT answersNamed in 1 of 1 Google answers
  • Timeless Skin Care3 of 4Named in 2 of 3 ChatGPT answersNamed in 1 of 1 Google answers
  • La Roche-Posay3 of 4Named in 2 of 3 ChatGPT answersNamed in 1 of 1 Google answers
  • CeraVe2 of 4Named in 2 of 3 ChatGPT answersNamed in 0 of 1 Google answers
  • Naturium2 of 4Named in 1 of 3 ChatGPT answersNamed in 1 of 1 Google answers
  • Paula's Choice1 of 4Named in 1 of 3 ChatGPT answersNamed in 0 of 1 Google answers
  • Sunday Riley1 of 4Named in 0 of 3 ChatGPT answersNamed in 1 of 1 Google answers
  • The Ordinary0 of 4Named in 0 of 3 ChatGPT answersNamed in 0 of 1 Google answers
  • Olay0 of 4Named in 0 of 3 ChatGPT answersNamed in 0 of 1 Google answers
  • Drunk Elephant0 of 4Named in 0 of 3 ChatGPT answersNamed in 0 of 1 Google answers

+2 more

See every answer about vitamin C serum brands

4 answers

Not named in any answer:

Brands are shown in the order each answer named them. The survey took place in the United States on October 22, 2026.

Is Olay or Sunday Riley more popular in search?

This chart shows how often people search Google for Olay and Sunday Riley by name. Each line represents a brand's share of searches for all 12 vitamin C serum brands we track, month by month, from English-language searches worldwide.

Olay and Sunday Riley among vitamin C serum brands worldwide, by month

Share of searches by month for Olay, Sunday Riley. The figures are in the table below the chart.

View monthly share of searches table
MonthSkinCeuticalsTimeless Skin CareCeraVeLa Roche-PosayThe OrdinaryOlayPaula's ChoiceNaturiumDrunk ElephantMaeloveSunday RileyTruSkin
Oct 202535.9%16.6%7.4%9.1%7.4%6.1%5.5%5%2.2%1.8%1.2%1.8%
Nov 202541.1%16.5%6%7.4%7.4%4.9%5.5%4%2.2%2.7%1.2%1.2%
Dec 202534.6%23.9%4.8%8.8%7.1%4.8%5.4%3.9%2.1%2.1%1.4%1.1%
Jan 202632.6%21%7.7%7.7%7.7%5.1%5.7%5.1%1.9%2.8%1%1.5%
Feb 202637.1%18.2%8.1%8.1%8.1%4.4%5%4.4%2%2%0.88%1.6%
Mar 202635.1%22.7%6.8%8.3%6.8%4.5%5.4%3.7%2.5%2%0.89%1.3%
Apr 202634.6%22.4%8.2%8.2%6.7%4.5%5.3%3.7%2.4%2%0.73%1.3%
May 202637.5%19.8%7.3%7.3%7.3%4%5.6%4%3.2%2.2%0.79%1.2%
Jun 202638.3%21.6%5.3%6.5%6.5%4.3%5.2%3.5%3.5%3.5%0.68%1%
Jul 202638.7%21.9%5.3%6.5%6.5%4.4%5.2%4.4%2.9%2.4%0.69%1%
Aug 202638.6%21.8%5.3%6.5%6.5%5.3%5.2%3.6%2.9%2.4%0.86%1%
Sep 202635%22.7%6.8%6.8%6.8%5.5%5.4%3.7%3%2.5%0.9%0.9%

How has the Olay and Sunday Riley comparison changed over the last 12 months?

3 findings
  • Olay was ahead of Sunday Riley in every measured month of the 12 months ending September 2026.
  • Across the 12 months ending September 2026, Olay’s share of searches among vitamin C serum brands worldwide moved from 6.1% to 5.5%, and its estimated monthly branded searches held steady at 14.8K.
  • Across the 12 months ending September 2026, Sunday Riley’s share of searches among vitamin C serum brands worldwide moved from 1.2% to 0.9%, and its estimated monthly branded searches moved from 2.9K to 2.4K.

How did search popularity change for vitamin C serum brands worldwide in September 2026?

2 changes

  1. Olay’s share of searches among vitamin C serum brands worldwide has gained ground for 3 months in a row, from 4.3% to 5.5% in September 2026.

  2. In September 2026, Sunday Riley rose from 12th to 11th among vitamin C serum brands worldwide.

How are branded searches counted?

2 search terms

Brandwave collects information about searches that people make online using Olay’s and Sunday Riley’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.

Olay

1 branded search term

  • olay vitamin c

Sunday Riley

1 branded search term

  • sunday riley ceo

How the Brand Demand Index is measured

Other head-to-heads among vitamin C serum brands

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