From 'Perfect One,' Japan's Top-Selling Skincare Brand for 10 Consecutive Years, Comes a New All-in-One Gel Focused on 'Moisture Retention' That Locks in Hydration

Shin Nihon Seiyaku Co., Ltd. (Headquarters: Fukuoka City; President and CEO: Takahiro Goto) announces the launch of 'Perfect One Aqua Keep Gel,' a new all-in-one skincare product under its 'Perfect One' brand, on Wednesday, July 15, 2026. This innovative gel focuses on 'moisture retention'—locking in hydration to deliver a translucent glow—rather than traditional 'moisturizing' for dry skin. It joins the brand’s all-in-one beauty gel series, which has ranked No. 1 in domestic sales for 10 consecutive years※1.

Perfect One Aqua Keep Gel (50g / ¥4,400 including tax)

【Key Features of the New Product】

① Dual fermented extracts loosen hardened skin, preparing it to better absorb moisture.

② A 'hydration-first' formula delivers a refreshing, translucent finish.

③ Contains hyaluronic acid that swells up to 30 times its size.

④ Provides strong moisture retention without stickiness, leaving skin smooth and soft—ideal for improved makeup application.

A New All-in-One Born from 20 Years of Skin Research

The 'Perfect One Aqua Keep Gel' is an all-in-one product designed not just for traditional dryness-focused 'moisturizing,' but for advanced 'moisture retention' that locks in hydration and enhances skin translucency※2. Upon application, the gel instantly melts into the skin, forming a tight, hydrating seal. Dual fermented extracts※3 help loosen skin that has become firm with age, creating a smoother surface for better moisture absorption. The 'hydration-first' formula separates into water and oil layers, allowing gradual penetration into the stratum corneum. It transforms from a refreshing texture into a smooth, adhering veil, delivering a deeply hydrated, translucent glow※2—just like layering multiple skincare products, all in one step. The formula includes hyaluronic acid※5 that swells up to 30 times※4 in volume, instantly plumping the skin with a single application. Its lightweight texture leaves skin smooth and soft, enhancing makeup application in the morning. Ideal for those seeking lightweight hydration and radiant, plump skin with enhanced translucency※2.

【Launch Background】

In recent years, growing lifestyle diversity and demand for time-saving routines have increased interest in simple skincare solutions that deliver multiple benefits in one step. Consumers now value not only functionality but also pleasant textures and ease of use for daily routines. Particularly among women aged 40 to 60, the stratum corneum tends to harden with age, making skincare products less absorbent. This calls for age-specific skincare innovations. Responding to these needs, the company introduces the 'Perfect One Aqua Keep Gel'—an all-in-one product that delivers layered-skincare-level hydration and a superior user experience. Moving beyond traditional 'moisturizing' for dryness, it adopts a 'moisture retention' philosophy that locks in hydration for a translucent glow※2. Going forward, the company will continue developing products aligned with its purpose: 'Creating joyful, fulfilling everyday lives through new approaches to beauty and health.'

【Product Features】

Dual fermented extracts※3 loosen hardened skin and improve moisture absorption

Formulated with olive ferment extract※6 and rice ferment extract※7. These fermented ingredients help loosen the hardened stratum corneum caused by aging, preparing the skin to better absorb hydration.

'Hydration-first' formula delivers a refreshing, translucent finish

The hydration-first formula allows the gel to separate into water and oil layers, enabling step-by-step penetration into the stratum corneum. It transforms from a refreshing texture into a smooth, adhering veil, delivering the hydration of layered toner, lotion, and cream—all in one step—for a translucent glow※2.

Contains hyaluronic acid that swells up to 30 times※4

Features hyaluronic acid※5 that swells up to 30 times※4 in volume. A single application delivers plump, bouncy skin. Additionally, the formula is richly infused with moisture-retaining ingredients such as Suizenji-nori※8 (with about 5 times the moisture retention of hyaluronic acid) and Shirokikurage※9 (with even higher moisture retention than hyaluronic acid), delivering deeply hydrated, translucent skin※2. Unique ingredients like Liposome Shikon VB※10 further support the skin’s natural moisture barrier.

Strong moisture retention without stickiness—smooth, soft skin with improved makeup application

Upon application, the gel instantly melts and adheres tightly to the skin, leaving it smooth and soft—perfect for enhancing morning makeup application. Additionally, vitamin-releasing capsules※11—PDRN-based capsules containing vitamins C and E—respond to UV exposure by releasing their contents, providing daytime skin protection.

※1 Including Perfect One Focus Series: Fuji Economic 'Cosmetics Marketing Outline 2017–2026' (Moisturizer and All-in-One categories / Manufacturer and Brand Share, 2016–2025 actuals) ※2 Due to hydration ※3 Glycolipid, Lactobacillus / Rice Ferment Filtrate (Humectant) ※4 Comparison before and after swelling (Shin Nihon Seiyaku research) ※5 Sodium Hyaluronate (Humectant), Dimethylsilyl Hyaluronate (Base) ※6 Glycolipid (Humectant) ※7 Lactobacillus / Rice Ferment Filtrate (Humectant) ※8 Nostoc Flagelliforme Extract (Humectant) ※9 Tremella Fuciformis Sporocarp Extract (Humectant) ※10 Lithospermum Erythrorhizon Root Extract, Hydrogenated Lecithin, Cyanocobalamin, Pyridoxine Dipentanoate, Biotin (Humectant) ※11 Tetrahexyldecyl Ascorbate (Humectant), Tocopherol (Product Antioxidant), DNA (Capsule Membrane Component)

【Product Overview】

Product Name

Perfect One Aqua Keep Gel

Usage

After morning and evening cleansing, take an appropriate amount (diameter approx. 1.5 cm) with the dedicated spatula, and gently spread over the entire face. Reapply to areas prone to dryness.

Capacity & Price

50g / ¥4,000 (excluding tax), ¥4,400 (including 10% tax)

Where to Buy

Perfect One Official Online Shop / Phone Orders / Select Perfect One Retailers

【About Perfect One】

Launched in 2006 as a skincare brand supporting diverse lifestyles of modern women, 'Perfect One' stands by its brand message: 'Simple care leads to natural skin beauty.' Its flagship all-in-one beauty gel series has achieved No. 1 domestic sales for 10 consecutive years※1 in the all-in-one market, with cumulative sales exceeding 90 million units※2.

▶ Thanks to our customers, 'Perfect One' celebrates its 20th anniversary. Visit our special commemorative website.

※1 Including Perfect One Focus Series: Fuji Economic 'Cosmetics Marketing Outline 2017–2026' (Moisturizer and All-in-One categories / Manufacturer and Brand Share, 2016–2025 actuals) ※2 Cumulative sales of Perfect One All-in-One Beauty Gel Series from May 2006 to February 2026 (including La Fine Perfect One Series and Perfect One Focus Series)

【Company Overview】

Company Name: Shin Nihon Seiyaku Co., Ltd.

Headquarters: 1-4-7 Otemon, Chuo-ku, Fukuoka City, Fukuoka Prefecture

Representative: President and CEO Takahiro Goto

Founded: March 1992

Business: Planning, direct sales, and wholesale distribution of cosmetics, health foods, and pharmaceuticals

URL: https://c