"Subtract rather than add, then flow"──Lotion 'FlowFlow Water' made only of water and mineral salt, to be exhibited and sold at matsukiyo FIRE "SHIBUYA DOGENZAKA FLAG" from May 1st
Office Kaleidoscope's skincare brand "FlowFlow" will exhibit and sell 'FlowFlow Water,' a lotion composed solely of water and mineral salt, at matsukiyo FIRE "SHIBUYA DOGENZAKA FLAG" starting May 1, 2026. This product aligns with the "Skinimalism 2.0" trend, emphasizing minimalist skincare, and marks its first full-scale exhibition at a Matsumoto Kiyoshi flagship store.
📋 Article Processing Timeline
- 📰 Published: April 30, 2026 at 17:50
- 🔍 Collected: April 30, 2026 at 09:31
- 🤖 AI Analyzed: April 30, 2026 at 10:04 (32 min after Collected)
──"FlowFlow Water"
From Office Kaleidoscope (Kokubunji City, Tokyo / Representative: Koji Yamamoto / Founded 2006), a skincare brand "FlowFlow" will launch its lotion 'FlowFlow Water,' composed entirely of water and mineral salt, for a limited-time exhibition and sale at matsukiyo FIRE "SHIBUYA DOGENZAKA FLAG" starting May 1, 2026.
This initiative marks the first full-scale exhibition at a Matsumoto Kiyoshi flagship store for FlowFlow Water, a product born from 20 years of exploring what is truly essential for mind and body health.
◼️ What is matsukiyo FIRE?
matsukiyo FIRE is a joint product sales support program by MatsukiyoCocokara & Co. and the crowdfunding service "CAMPFIRE." It operates as an initiative to sell innovative products, prior to their general drugstore distribution, at Matsumoto Kiyoshi's flagship stores.
▶ About matsukiyo FIRE
◼️ Skincare: From "Adding" to "Subtracting"
In the past, skincare was synonymous with "increasing steps." Lotions, serums, emulsions, creams, masks──the more, the better, it was believed.
However, that idea is now quietly reversing.
The domestic sensitive skin cosmetics market is projected to expand to 101 billion yen in FY2024, a 5.6% increase from the previous year, and reach 104.5 billion yen in FY2025 (▶ Syogyo) (according to Yano Research Institute). The number of people who feel they have "sensitive skin" is increasing, and more than half now check ingredients when purchasing.
Globally, beauty media (Runway Magazine, Hyphen, etc.) report that in 2026, the era of 10-step routines and full coverage is shifting towards a more intentional "Skinimalism 2.0" (▶ Runwaylive). This view suggests that minimalist routines are maturing from simply "doing nothing" to consistently achieving results with fewer, higher-quality products (▶ Trilogylaboratories).
Subtracting is not cutting corners; it's re-choosing.
Only what is necessary, in necessary amounts.
FlowFlow Water has been heading in the same direction even before this trend got its name.
◼️ What is FlowFlow Water?──
"Minimalism for Bare Skin"
FlowFlow Water is a lotion composed entirely of water and mineral salt.
To put as little as possible on the skin.
To reduce the number of choices as much as possible.
And to gently help the skin return to its natural rhythm.
──Ingredients: Water, Mineral Salt
Originally, FlowFlow started as a fermented skincare brand with five ingredients. During the process of formulation improvement, we were drawn to water manufacturing technology, which led to the creation of a lotion made only of water and mineral salt. The faces of people who needed this water immediately came to mind. The full story of this development will be revealed soon in the representative's story.
FlowFlow Water is currently the only lotion offered by FlowFlow. We also suggest using it with oil during the dry autumn and winter seasons. Perhaps new proposals aligned with the flow of daily life will emerge in the future. But for now, we want to carefully deliver this one product.
◼️ About Safety and Security
Because it is applied to the skin, FlowFlow has directly addressed product safety. FlowFlow Water has been commercialized after multiple tests by third-party organizations, and its results are disclosed.
Implemented Tests and Results
Test Item | Result
---|---
Sensitive Skin Patch Test | Skin Irritation Index 0.0 (Classification: Safe Product)
Sensitive Skin Stinging Test | Score 1.37 (Classification: Non-irritating)
Accidental Ingestion/Acute Toxicity Test | Negative/Outside Classification (Safe)
Eye Irritation Test | Outside Classification (Safe)
Permeation Evaluation Test | Implemented
Moisturizing Effect Test | Implemented
pH Measurement Test | pH around 11.93
▶ You can check the details of the tests here: Office Kaleidoscope Safety Test Page
About pH Value
FlowFlow Water has an alkaline pH of around 11.93. Because this value is higher than typical lotions, we have conducted repeated tests to confirm its safety. It has been judged non-irritating in patch and stinging tests for sensitive skin.
7 Years of Actual Use Records
FlowFlow Water began sales in 2019, and as of 2026, it has been 7 years.
From Office Kaleidoscope (Kokubunji City, Tokyo / Representative: Koji Yamamoto / Founded 2006), a skincare brand "FlowFlow" will launch its lotion 'FlowFlow Water,' composed entirely of water and mineral salt, for a limited-time exhibition and sale at matsukiyo FIRE "SHIBUYA DOGENZAKA FLAG" starting May 1, 2026.
This initiative marks the first full-scale exhibition at a Matsumoto Kiyoshi flagship store for FlowFlow Water, a product born from 20 years of exploring what is truly essential for mind and body health.
◼️ What is matsukiyo FIRE?
matsukiyo FIRE is a joint product sales support program by MatsukiyoCocokara & Co. and the crowdfunding service "CAMPFIRE." It operates as an initiative to sell innovative products, prior to their general drugstore distribution, at Matsumoto Kiyoshi's flagship stores.
▶ About matsukiyo FIRE
◼️ Skincare: From "Adding" to "Subtracting"
In the past, skincare was synonymous with "increasing steps." Lotions, serums, emulsions, creams, masks──the more, the better, it was believed.
However, that idea is now quietly reversing.
The domestic sensitive skin cosmetics market is projected to expand to 101 billion yen in FY2024, a 5.6% increase from the previous year, and reach 104.5 billion yen in FY2025 (▶ Syogyo) (according to Yano Research Institute). The number of people who feel they have "sensitive skin" is increasing, and more than half now check ingredients when purchasing.
Globally, beauty media (Runway Magazine, Hyphen, etc.) report that in 2026, the era of 10-step routines and full coverage is shifting towards a more intentional "Skinimalism 2.0" (▶ Runwaylive). This view suggests that minimalist routines are maturing from simply "doing nothing" to consistently achieving results with fewer, higher-quality products (▶ Trilogylaboratories).
Subtracting is not cutting corners; it's re-choosing.
Only what is necessary, in necessary amounts.
FlowFlow Water has been heading in the same direction even before this trend got its name.
◼️ What is FlowFlow Water?──
"Minimalism for Bare Skin"
FlowFlow Water is a lotion composed entirely of water and mineral salt.
To put as little as possible on the skin.
To reduce the number of choices as much as possible.
And to gently help the skin return to its natural rhythm.
──Ingredients: Water, Mineral Salt
Originally, FlowFlow started as a fermented skincare brand with five ingredients. During the process of formulation improvement, we were drawn to water manufacturing technology, which led to the creation of a lotion made only of water and mineral salt. The faces of people who needed this water immediately came to mind. The full story of this development will be revealed soon in the representative's story.
FlowFlow Water is currently the only lotion offered by FlowFlow. We also suggest using it with oil during the dry autumn and winter seasons. Perhaps new proposals aligned with the flow of daily life will emerge in the future. But for now, we want to carefully deliver this one product.
◼️ About Safety and Security
Because it is applied to the skin, FlowFlow has directly addressed product safety. FlowFlow Water has been commercialized after multiple tests by third-party organizations, and its results are disclosed.
Implemented Tests and Results
Test Item | Result
---|---
Sensitive Skin Patch Test | Skin Irritation Index 0.0 (Classification: Safe Product)
Sensitive Skin Stinging Test | Score 1.37 (Classification: Non-irritating)
Accidental Ingestion/Acute Toxicity Test | Negative/Outside Classification (Safe)
Eye Irritation Test | Outside Classification (Safe)
Permeation Evaluation Test | Implemented
Moisturizing Effect Test | Implemented
pH Measurement Test | pH around 11.93
▶ You can check the details of the tests here: Office Kaleidoscope Safety Test Page
About pH Value
FlowFlow Water has an alkaline pH of around 11.93. Because this value is higher than typical lotions, we have conducted repeated tests to confirm its safety. It has been judged non-irritating in patch and stinging tests for sensitive skin.
7 Years of Actual Use Records
FlowFlow Water began sales in 2019, and as of 2026, it has been 7 years.