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Published: 13 products

"My skin feels fresh right after washing, but a few minutes later it suddenly feels tight." "I feel like I need to apply moisturiser straight away." "My cheeks feel tight when I smile." Have you ever experienced this after cleansing? Skin tightness is often explained as: "The cleanser removed too much sebum." or "Your skin became dry." Both are certainly possible contributors. However, recent research suggests that the feeling of tightness may be linked not simply to dryness itself, but to the changes that occur as the skin dries. Let's take a look at what current research tells us.
Hiroaki Kaga | Jul 1, 2026

When choosing a facial cleanser, have you ever heard things like: "Amino acid-based cleansers are gentler." "Soap-based cleansers have stronger cleansing power." There is some truth to these ideas. In fact, it is possible to estimate a cleanser's cleansing power to a certain extent by looking at the ingredient list. If you could use the ingredient list to choose a cleanser that better matches your current skin condition, selecting the right product would become much easier. In this article, we'll look at how cleansing power is commonly estimated from cosmetic ingredient lists, based on ingredient-labelling rules. We'll also explore both the general rules and some important exceptions, drawing on experience from cleanser formulation and development.
Hiroaki Kaga | Jun 10, 2026

When refilling a foaming facial cleanser, have you ever thought, “It should be fine as long as I use the same bottle”? In reality, it is not just about the formula itself. In cosmetic research and development, quality is assessed not only for the formula, but also for its compatibility with the packaging used. Foaming cleansers in particular can be sensitive because the condition and structure of the pump can affect the quality of the foam. Depending on how the product is refilled, the cleanser may not perform as originally intended. As these are products used on your skin every day, it is worth paying attention to how they are refilled. In this article, we will explain the key points to consider when refilling foaming cleansers, from a cosmetic R&D perspective, in as simple and practical a way as possible.
Hiroaki Kaga | Jun 2, 2026

Okay, real talk. I have a shelf — actually, two shelves — full of skincare. Glass bottles, droppers, K-beauty essences, French pharmacy creams, that one luxe serum I impulse-bought after a TikTok spiral at 2am. And yet, the product I've been reaching for every single morning and night for the last few months costs ¥268. Less than a coffee. It's a humble little tube of Japanese face wash called 麗白 ハトムギ洗顔フォーム (Reihaku Hatomugi Face Wash Foam), from a brand most people outside Japan have never heard of. And after years of being a self-proclaimed 美容オタク (beauty nerd, not a derm, please don't take medical advice from me), I'm here to tell you: this is the most underrated step in your routine. Let me explain.
Reina Suzuki | May 28, 2026

If you've ever stood in a Welcia, Matsumoto Kiyoshi or Don Quijote staring at a wall of pastel pump bottles, you know the feeling: dozens of Japanese drugstore face washes, most under ¥1,500, all promising poreless, glassy, mochi-hada skin. Some of them genuinely deliver. Some of them are repackaged disappointment in a cute bottle.
Reina Suzuki | May 21, 2026
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