--- title: "Joico vs K18: Which is more popular?" description: "Is Joico or K18 more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Purple shampoo brands set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time." canonical: "https://gobrandwave.com/demand/global-en/compare/joico-vs-k18-hair" publisher: "Brandwave" --- # Joico vs K18: Which is more popular? Is Joico or K18 more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Purple shampoo brands set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time. ## Key facts - **Compared**: Joico and K18 - **Competitive set**: Purple shampoo brands - **Market**: Global - **Month measured**: Oct 2026 - **Joico Share of Search**: 7.2% - **K18 Share of Search**: 10.8% ## Is Joico or K18 more popular in search? - In October 2026, K18 had more branded searches than Joico among purple shampoo brands worldwide. K18 had about 9,900 branded searches, while Joico had 6,600. K18 made up 10.8% of all purple shampoo brand searches we track, and Joico accounted for 7.2%. - The lead changed hands once in the 12 months ending October 2026: K18 took it in April 2026. - Across the 12 months ending October 2026, Joico’s share of searches among purple shampoo brands worldwide moved from 6.4% to 7.2%, and its estimated monthly branded searches moved from 4.4K to 6.6K. - Across the 12 months ending October 2026, K18’s share of searches among purple shampoo brands worldwide moved from 0.31% to 10.8%, and its estimated monthly branded searches moved from 210 to 9.9K. ## Top purple shampoo brands in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, neither Joico nor K18 showed up in any of the five answers. Brands get a higher AI rank if they are mentioned earlier in the answers that list options. | Brand | AI rank | ChatGPT answers that named it | Google AI Overviews that named it | All answers that named it | | --- | --- | --- | --- | --- | | Amika | 1st | 2 of 3 | 1 of 2 | 3 of 5 | | Olaplex | 2nd | 2 of 3 | 2 of 2 | 4 of 5 | | Redken | 3rd | 2 of 3 | 0 of 2 | 2 of 5 | | Pureology | 4th | 1 of 3 | 0 of 2 | 1 of 5 | | Fanola | 5th | 1 of 3 | 0 of 2 | 1 of 5 | | Matrix | 6th | 1 of 3 | 0 of 2 | 1 of 5 | | Clairol | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | K18 | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Joico | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Kristin Ess | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | ## Every AI answer about purple shampoo brands - Asked ChatGPT "Which purple shampoo should I use?": 1. Pureology, 2. Olaplex - Asked ChatGPT "What are the best purple shampoo brands?": 1. Amika, 2. Olaplex, 3. Redken, 4. Fanola, 5. Matrix - Asked ChatGPT "What's the best purple shampoo for brassy blonde hair?": 1. Amika, 2. Redken - Searched Google, AI Overview "purple shampoo": 1. Olaplex - Searched Google, AI Overview "best purple shampoo": 1. Olaplex, 2. Amika Not named in any answer: Clairol, K18, Joico and Kristin Ess. Brands are listed in the order each answer named them. The answers were collected in the United States on October 25, 2026. ## How did search popularity change for purple shampoo brands worldwide in October 2026? - In October 2026, K18 lost share of searches among purple shampoo brands worldwide, from 12.7% to 10.8%. - Joico’s share of searches among purple shampoo brands worldwide has gained ground for 3 months in a row, from 5.7% to 7.2% in October 2026. ## How has branded search for Joico and K18 changed worldwide over the last 12 months? | Month | Joico estimated searches | Joico Share of Search | Joico rank | K18 estimated searches | K18 Share of Search | K18 rank | | --- | --- | --- | --- | --- | --- | --- | | Nov 2025 | 4.4K | 6.4% | 5 | 210 | 0.31% | 10 | | Dec 2025 | 4.4K | 6.4% | 5 | 210 | 0.31% | 10 | | Jan 2026 | 4.4K | 6.6% | 5 | 260 | 0.39% | 10 | | Feb 2026 | 4.4K | 6.9% | 5 | 210 | 0.33% | 10 | | Mar 2026 | 5.4K | 6.8% | 5 | 2.4K | 3% | 8 | | Apr 2026 | 5.4K | 5.8% | 6 | 14.8K | 15.8% | 2 | | May 2026 | 5.4K | 5.2% | 6 | 22.2K | 21.2% | 2 | | Jun 2026 | 5.4K | 5.9% | 6 | 14.8K | 16.2% | 2 | | Jul 2026 | 5.4K | 5.7% | 6 | 18.1K | 19.2% | 2 | | Aug 2026 | 5.4K | 6.1% | 6 | 12.1K | 13.7% | 3 | | Sep 2026 | 5.4K | 6.9% | 6 | 9.9K | 12.7% | 4 | | Oct 2026 | 6.6K | 7.2% | 6 | 9.9K | 10.8% | 4 | ## How are Joico’s and K18’s branded searches counted? Brandwave collects information about searches that people make online using Joico’s and K18’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. - **Joico**: Measured on the search term “joico purple shampoo”. - **K18**: Measured on the search term “k18 purple shampoo”. - [Joico profile](/demand/global-en/brands/joico) - [K18 profile](/demand/global-en/brands/k18-hair) - [All purple shampoo brands worldwide](/demand/global-en/categories/purple-shampoo-brands): The set both shares are measured inside, 10 brands. ## Methodology - [How is the Brand Demand Index measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Frequently asked questions ### Is Joico or K18 more popular in search? In October 2026, K18 had more branded searches than Joico among purple shampoo brands worldwide. K18 had about 9,900 branded searches, while Joico had 6,600. K18 made up 10.8% of all purple shampoo brand searches we track, and Joico accounted for 7.2%. ## Cite this page Brandwave. "Joico vs K18: Which is more popular?". https://gobrandwave.com/demand/global-en/compare/joico-vs-k18-hair This page is also available as HTML at https://gobrandwave.com/demand/global-en/compare/joico-vs-k18-hair. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.