--- title: "COSRX vs Isntree: Which is more popular?" description: "Is COSRX or Isntree more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Korean sunscreen 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/cosrx-vs-isntree" publisher: "Brandwave" --- # COSRX vs Isntree: Which is more popular? Is COSRX or Isntree more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Korean sunscreen 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**: COSRX and Isntree - **Competitive set**: Korean sunscreen brands - **Market**: Global - **Month measured**: Oct 2026 - **COSRX Share of Search**: 3.9% - **Isntree Share of Search**: 2.6% ## Is COSRX or Isntree more popular in search? - In October 2026, COSRX had more branded searches than Isntree among Korean sunscreen brands worldwide. COSRX had about 27,100 branded searches, while Isntree had 18,100. COSRX made up 3.9% of all Korean sunscreen brand searches we track, and Isntree accounted for 2.6%. - COSRX was ahead of Isntree in every measured month of the 12 months ending October 2026. - Across the 12 months ending October 2026, COSRX’s share of searches among Korean sunscreen brands worldwide held steady at 3.9%, and its estimated monthly branded searches moved from 18.1K to 27.1K. - Across the 12 months ending October 2026, Isntree’s share of searches among Korean sunscreen brands worldwide moved from 3.2% to 2.6%, and its estimated monthly branded searches moved from 14.8K to 18.1K. ## Top Korean sunscreen brands in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, Isntree was mentioned in three out of five: in all three ChatGPT answers, but not in either of the two Google AI Overviews. COSRX was mentioned in two out of five: not in any of the three ChatGPT answers, but in both Google AI Overviews. Isntree was listed before COSRX in three out of 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 | | --- | --- | --- | --- | --- | | Beauty of Joseon | 1st | 3 of 3 | 2 of 2 | 5 of 5 | | SKIN1004 | 2nd | 3 of 3 | 1 of 2 | 4 of 5 | | Round Lab | 3rd | 2 of 3 | 1 of 2 | 3 of 5 | | Isntree | 4th | 3 of 3 | 0 of 2 | 3 of 5 | | COSRX | 5th | 0 of 3 | 2 of 2 | 2 of 5 | | haruharu wonder | 6th | 0 of 3 | 1 of 2 | 1 of 5 | | Torriden | 7th | 1 of 3 | 0 of 2 | 1 of 5 | | Anua | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Purito Seoul | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | MISSHA | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | AXIS-Y | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | ## Every AI answer about Korean sunscreen brands - Asked ChatGPT "Which Korean sunscreen should I buy?": 1. Beauty of Joseon, 2. SKIN1004, 3. Round Lab, 4. Isntree - Asked ChatGPT "What are the best Korean sunscreen brands?": 1. Beauty of Joseon, 2. SKIN1004, 3. Round Lab, 4. Isntree, 5. Torriden - Asked ChatGPT "What's the best Korean sunscreen for oily skin?": 1. Isntree, 2. Beauty of Joseon, 3. SKIN1004 - Searched Google, AI Overview "korean sunscreen": 1. haruharu wonder, 2. Round Lab, 3. COSRX, 4. Beauty of Joseon, 5. SKIN1004 - Searched Google, AI Overview "best korean sunscreen": 1. Beauty of Joseon, 2. COSRX Not named in any answer: Anua, Purito Seoul, MISSHA and AXIS-Y. 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 Korean sunscreen brands worldwide in October 2026? - In October 2026, COSRX lost share of searches among Korean sunscreen brands worldwide, from 4.6% to 3.9%. - Estimated monthly branded searches for Isntree worldwide rose 22.3% over 12 measured months, from 14.8K to 18.1K in October 2026. ## How has branded search for COSRX and Isntree changed worldwide over the last 12 months? | Month | COSRX estimated searches | COSRX Share of Search | COSRX rank | Isntree estimated searches | Isntree Share of Search | Isntree rank | | --- | --- | --- | --- | --- | --- | --- | | Nov 2025 | 18.1K | 3.9% | 4 | 14.8K | 3.2% | 5 | | Dec 2025 | 18.1K | 4.5% | 4 | 14.8K | 3.7% | 5 | | Jan 2026 | 22.2K | 4.6% | 4 | 14.8K | 3.1% | 7 | | Feb 2026 | 22.2K | 4.6% | 4 | 14.8K | 3.1% | 7 | | Mar 2026 | 27.1K | 4.4% | 4 | 22.2K | 3.6% | 6 | | Apr 2026 | 33.1K | 4.4% | 4 | 27.1K | 3.6% | 6 | | May 2026 | 40.5K | 5.3% | 4 | 22.2K | 2.9% | 7 | | Jun 2026 | 33.1K | 4.4% | 5 | 18.1K | 2.4% | 7 | | Jul 2026 | 27.1K | 4.2% | 5 | 18.1K | 2.8% | 7 | | Aug 2026 | 33.1K | 5.3% | 4 | 18.1K | 2.9% | 7 | | Sep 2026 | 27.1K | 4.6% | 4 | 14.8K | 2.5% | 7 | | Oct 2026 | 27.1K | 3.9% | 5 | 18.1K | 2.6% | 7 | ## How are COSRX’s and Isntree’s branded searches counted? Brandwave collects information about searches that people make online using COSRX’s and Isntree’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. - **COSRX**: Measured on the search term “cosrx sunscreen”. - **Isntree**: Measured on the search term “isntree sunscreen”. - [COSRX profile](/demand/global-en/brands/cosrx) - [Isntree profile](/demand/global-en/brands/isntree) - [All Korean sunscreen brands worldwide](/demand/global-en/categories/korean-sunscreen-brands): The set both shares are measured inside, 11 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 COSRX or Isntree more popular in search? In October 2026, COSRX had more branded searches than Isntree among Korean sunscreen brands worldwide. COSRX had about 27,100 branded searches, while Isntree had 18,100. COSRX made up 3.9% of all Korean sunscreen brand searches we track, and Isntree accounted for 2.6%. ## Cite this page Brandwave. "COSRX vs Isntree: Which is more popular?". https://gobrandwave.com/demand/global-en/compare/cosrx-vs-isntree This page is also available as HTML at https://gobrandwave.com/demand/global-en/compare/cosrx-vs-isntree. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.