かずのすけ
31:027 Budget Serums: Kazunosuke's 2026 Picks That Are "a Miracle They're Not Department-Store Cosmetics"
Cosmetic chemist Kazunosuke had never made a video devoted solely to budget-priced serums. The reason, they say, is that most serums they could confidently recommend as effective cost around 5,000–7,0
27:53Is It True That "Your Skin Gets Oily Because It Lacks Moisture"? Kazunosuke's 7 Secrets of Oily Skin Care
Cosmetic chemist Kazunosuke laid out seven basic principles of oily skin care for people struggling with acne and shiny, oily skin. Rather than introducing specific products, the video is a digest-sty
27:01Reading Cow Brand Soap's New Skincare Line "AKA" Through Its Ingredients: A Soap That Spares Good Skin Bacteria, Plus a Moisture-Focused Lotion and Milk
On October 1, 2026, Cow Brand Soap Kyoshinsha Co., Ltd. launched three products, a facial soap, a toner, and an emulsion, as the first release of its new skincare brand "AKA." Cosmetic chemist Kazunos
15:25Kazunosuke Breaks Down "Dove Pearl Shine Cleansing Oil": A Roughly ¥1,000 Oil That Uses a Synthetic Triglyceride to Approach a Natural-Oil Cleanser
Cosmetic chemist Kazunosuke reviewed "Dove Pearl Shine Cleansing Oil," released by Dove this spring, in a sponsored video with Unilever Japan. The speaker calls the product a "hidden gem" and a "next-
19:21Reading MUJI's "Fermented Plant Extract Head Scrub" Through Its Ingredients: Salt Is the Main Ingredient, and the Cleansing Agents Are Mild
Cosmetic chemist Kazunosuke reviewed MUJI's "Fermented Plant Extract Head Scrub," looking at its ingredients and how it feels in use. The product went on sale in March 2026 and became a talking point
26:52What's New About Kracie's FERTHÉA: Why It Matters That an Affordable Brand Explicitly Claims "Liposomes"
Cosmetic chemist Kazunosuke rates FERTHÉA, the skincare brand Kracie launched on September 11, 2024, as "probably the most impressive" of the notable new releases they introduced in August and Septemb
23:05How Effective Is Combining Oral Vitamin C with Topical Tranexamic Acid? Reading New Research from Daiichi Sankyo Healthcare
Cosmetic chemist Kazunosuke explained a research presentation by Daiichi Sankyo Healthcare. The presentation reported that taking vitamin C and similar ingredients orally while applying tranexamic aci
18:52How Dermaid's Lotion and Cream Have Changed: Odor Fixes, Glycerin Removal, and a Preview of the New "Mild Series"
In a sponsored video with pdc, cosmetic chemist Kazunosuke explained the renewal of Dermaid, a skincare line formulated with three active ingredients: niacinamide, tranexamic acid, and D-panthenol. Th
20:54Rohto Pharmaceutical Introduces a "Non-Neutralized" Azelaic Acid Serum: A Look at Its New Research and the "DRX AZA Clear Serum"
Rohto Pharmaceutical has released new research on azelaic acid, an ingredient drawing attention for addressing excess sebum, pores, and acne. Until now, high-concentration azelaic acid formulations ha
23:53[Hidden Properties of Soap] Cow Brand Soap's Latest Research and the Science of Cleansing Explained
Based on a research release from Cow Brand Soap Kyoshinsha on "selective antibacterial action against resident skin bacteria by tallow-derived soap base composition," this article explains the antibac
22:26CeraLabo's Newest Release "Cerasiel Vita Lotion" Debuts & "Red Moist Cream" Renewal Explained
CeraLabo has announced the launch of Cerasiel Vita Lotion, an all-new toner in its "Cerasiel" aging-care line, along with a renewal of the popular Cerasiel Red Moist Cream, which is moving to an airle
24:16A Deep Dive into Curél's New "Moisture-Locking Oil Serum"
Cosmetic chemist Kazunosuke explains the ingredients, development background, and effective usage of the "Curél Intensive Moisture Care Moisture-Locking Oil Serum," a first-of-its-kind release from Ka
27:44A Deep Dive into Kao's "est Genolux Cream"
Beauty chemist Kazunosuke gives a detailed explanation of the formulation, mechanism of action and latest technology behind the cutting-edge anti-aging cream "est Genolux Cream" (50g / ¥14,300 includi
15:24ORBIS U vs. ORBIS U DOT: Comparing the Lotions and How to Choose
A cosmetics professional explains the differences in ingredients, feel, and recommended skin types between the lotions in POLA ORBIS Group's popular skincare lines, ORBIS U and ORBIS U DOT.
22:22Pro Beauty Tips! Self Nail Care That Protects Your Natural Nails and Prevents Rough Hands
Cosmetic chemist Kazunosuke, who has atopic skin prone to rough hands, explains the steps and key points of a self-done gel manicure that prevents nail breakage from activities such as playing guitar
27:40MUJI's August Releases: An In-Depth Look at the "Fermented Wipe-Off Toner" and the "Medicated Toothpaste" Series
Cosmetic chemist Kazunosuke reviews two notable skincare products released by MUJI in August 2024, the "Fermented Wipe-Off Toner" and the "Medicated Toothpaste Series." He covers their ingredients, fe
20:43The Formulation and Performance of Suncut "Weightless UV Essence": The Culmination of Zinc Oxide-Based Sunscreens and How to Choose by Skin Type
"Suncut Weightless UV Essence," released by KOSÉ Cosmeport within lines such as the "Suncut Pro Defense" series, has drawn attention as a product that combines Japan's highest UV protection ratings (S
18:49The Reality of High-Concentration PPT and Formulation Design in Amprem, I-ne's New Hair Care Line
I-ne, the company behind brands such as Botanist and YOLU, has launched Amprem, a hair care brand formulated with a high concentration of protein (PPT) ingredients. Offered in two lines, "Keratin Shot
36:57Brilliant More W: 7 Whitening Toothpastes to Use Amid Soaring Prices and Shortages
Lion's Brilliant More W has earned wide support as a whitening toothpaste sold mainly through dental clinics, but due to rising raw material costs, naphtha shortages, resale scalping and other factors
37:49Ingredient Formulations and Features of 8 Affordable Toners for Oily Skin and Sebum Problems
The speaker points out that in the Japanese skincare market, most toners lean heavily toward a moist, hydrating feel, leaving extremely few options for people with oily skin or those who dislike stick