*This article was written in cooperation with Rohto Pharmaceutical.

*All reference prices listed in this article include consumption tax.

The Premier* Slow-Aging Skincare Brand "episteme": Addressing Skin Concerns With Over 120 Years of Pharmaceutical Research Expertise

The unwavering backbone of "episteme" is Rohto Pharmaceutical, a company loved by many. Building on over 120 years of pharmaceutical expertise, Rohto has expanded its research into advanced fields such as regenerative medicine, life sciences, and longevity science, pursuing the potential for people and their skin to age more healthily and beautifully.

episteme focuses on four key factors that significantly impact skin beauty: glycation, oxidation, photoaging, and natural aging. While exploring the mechanisms behind how skin maintains a youthful appearance, the brand continues to advance its understanding of how to keep skin firm, radiant, and well hydrated for as long as possible. This is the core concept behind episteme's "slow-aging skincare*."

*Slow-aging skincare: Age-appropriate skincare
*Premier: Among Rohto Pharmaceutical’s skincare brands

Based on its own cutting-edge research, episteme has developed two product series: "STEM SCIENCE" combines Rohto Pharmaceutical's cell culture technology with in-depth skin science research, guiding skin toward a firm, bouncy complexion that feels as though it has been reborn from the foundation up. "CLINI SCIENCE" fuses skincare science with Rohto Pharmaceutical's insights into how the skin functions, pursuing tangible results while addressing deeper skin concerns such as skin brightening and eye care.

Bring cutting-edge longevity science into your daily routine and discover what healthy, youthful skin truly feels like with episteme.

Not sure about your current skin condition, or can't decide which products are right for you? Just stop by the episteme counter for a complimentary skin analysis using specialized measuring equipment. A skin consultant will then provide personalized, one-on-one skincare advice and recommend the best products suited to your individual needs.

It's also reassuring to know that all their products are formulated with safe, carefully selected ingredients that meet pharmaceutical-grade quality standards.

International visitors can shop and consult with complete peace of mind, too. The real-time phone interpretation service covers 13 languages, including Chinese, English, and Korean, so there's no need to worry if you don’t know Japanese.

🎁Exclusive perk for tsunagu Japan readers: Show the coupon in this article at the episteme counter to receive a free sample gift! (Please check with store staff for details.)

7 Select Signature Products From "episteme"

Lift and Tighten the Eye Area! The Secret Behind the Brand's Best-Selling Eye Cream: CLINI SCIENCE eye perfect shot

The eye area is one of the first places where signs of aging tend to show up. Even without any noticeable wrinkles, many people start to notice subtle changes - a drooping outer corner, hollowing under the eyes, or eyelids that feel heavier and harder to open fully. You might be getting plenty of rest, yet your reflection in the mirror looks tired, or somehow lacks the bright, lively look you once had.

The culprit may actually be age-related changes in the structure of the eye area itself. Over time, the muscles and tissues that support the eye area gradually weaken, and skin loses its firmness and elasticity, quietly eroding the eye area's overall support and allowing signs of aging to creep in before you know it.

Rohto Pharmaceutical has been dedicated to eye research for over 100 years. Drawing on that deep expertise, the brand developed a nighttime eye cream that provides 360° care for the eye area, with a particular focus on the muscular structure and tension* around the eyes.

A flagship product in episteme's CLINI SCIENCE series, it has earned numerous accolades in Japanese beauty magazines as well as Best Cosmetics Awards since its launch. In reader surveys conducted by beauty magazines, it has received high marks for helping to improve firmness and lift around the eyes, reducing the appearance of sagging eyelids, and addressing overall skin dullness.

*Tension: Refers to the characteristics of the formulation

The texture is rich yet effortlessly spreadable. It glides onto the skin with a soft, cushiony feel, hugging the delicate eye area perfectly. Comfortable to use even in humid weather, it leaves no heaviness or stickiness, making it ideal for intensive overnight care. Developed to deliver deep hydration and nourishing ingredients to the skin while you sleep, it suits all skin types, from dry to oily, and fits seamlessly into any nighttime routine. With continued use, it helps maintain a smooth, firm, and hydrated appearance around the eyes, leaving the eye area looking bright and beautiful while helping preserve a youthful, radiant appearance.

Redefining Everything You Thought You Knew About Oils! Your First Step to Slow-Aging Skin: STEM SCIENCE oil

Does this sound familiar? You layer on product after product, yet your skin still feels dry and flaky. You pat on lotion again and again, but it never seems to truly sink in. After applying makeup, your foundation turns powdery, and the healthy glow you once had is nowhere to be found. In most cases, these are signs that your skin is gradually losing its natural softness and vitality.

Developed as the first step in the STEM SCIENCE skincare series, this introductory beauty oil is designed to help your skin rediscover its natural softness and elasticity. Using a specially adapted encapsulation technology, it stably locks "PQQ*" - a key ingredient that activates the skin's youthful state at a cellular level - into a 100% pure oil base. With a primary focus on deep skin activation and repair, it quickly softens the stratum corneum hardened by dryness, significantly boosting the penetration and absorption of lotion and other products applied afterward.

Rather than fighting aging, this product was born from a slow-aging perspective - one that revives the skin from the cellular level up.

And here's something that might surprise you: because this oil is so effective at gently enveloping and softening hardened skin, the episteme staff we talked to recommended it not just for dry skin types, but for oily skin, too. Even skin that feels rough and congested from excess sebum is transformed into something dewy and supple with this oil!

*PQQ: Disodium pyrroloquinolinedione tricarboxylate (skin-conditioning and moisturizing ingredient)

Despite its oily texture, it melts into the skin instantly upon contact, absorbing like water while delivering the kind of deep hydration only an oil can provide. It blends in quickly with no sticky residue, leaving behind nothing but a silky, refined glow and a subtle fragrance - completely overturning the old idea that oil-based skincare is heavy and greasy. For anyone who wants to maintain soft, supple skin with a lasting glow, this is far more than a beauty oil. It's an essential first step into slow-aging skincare.

10 Days of Intensive Care for Results That Rival a Professional Spa Treatment! The Ultimate* Serum: STEM SCIENCE RX shot

When you’re younger, you can pull all-nighters or live completely off-schedule, and your skin will bounce right back - its natural radiance and elasticity restored in no time. But as the years go by, many of us start to notice that our skin is far more easily affected than it used to be. The toll of a late night lingers longer. Seasonal shifts and stress send the skin into flux more readily. And even when you stick to the exact same skincare routine, it seems to take longer and longer for your skin to get back to where you want it. These changes are important signals that your skin's youthfulness is gradually beginning to fade.

This intensive, richly concentrated serum - the world's first to contain low-molecular-weight stem cell-conditioned medium (STEM CM*) technology - is designed as a premium add-on to your everyday skincare routine. It helps restore firmness, texture, and radiance to the skin in a short period of time, bringing a deep, salon-quality hydration experience right into your own home. 

Each individually packaged 8 mL bottle is recommended to be used within 10 days of opening, so every application feels perfectly fresh. The smooth, velvety texture melts into the skin and absorbs quickly, keeping your skin feeling firm and lifted. Whether you're navigating a seasonal transition, recovering from a disrupted routine, or simply want your skin to look its absolute best before a special occasion, RX shot is your go-to intensive slow-aging skincare option, infusing the skin with a renewed sense of youthfulness and supporting a firm, radiant, and clear complexion.

Drawing on insights from skin longevity research focused on health at the cellular level, this serum delivers a lasting approach to aging skincare that looks beyond current skin concerns to help support your skin’s future beauty as well.

*Ultimate: Within the episteme brand
*STEM CM: Hydrolyzed human adipose stromal cell conditioned media (moisturizing ingredient)

*Update (August 2026): The bottle has been redesigned.

Beauty Clinic Dark Spot Treatment Packed Into One Tube! Blocking Stubborn Dark Spots at the Source: CLINI SCIENCE white laser gel

A youthful appearance isn't just about the firmness and elasticity of the skin - an even, translucent complexion plays an equally important role.

The development of this whitening gel was inspired by the two core pillars of dark spot treatment at Japanese beauty clinics: topical application and laser therapy, which they decided to turn into a single product. The brand's development team conducted in-depth research into the changes that take place within the skin following aesthetic medical procedures and determined that the key to achieving a more even, clear skin tone through clinic-based treatments lies in targeting the mechanisms behind melanin production.

Drawing on this research, episteme developed a proprietary whitening formula that recreates - through daily application of the gel - the kind of results typically seen after professional whitening treatments. It also contains a skin-brightening active ingredient approved by the Japanese government as a quasi-drug, taking a multi-faceted approach to suppressing melanin production and preventing the formation of dark spots and dullness right at the source.

The gel has a unique texture but melts effortlessly into the skin upon application, spreading smoothly and adhering closely to lock in moisture for a long time. It nurtures the skin, helping to prevent irritation while guiding it toward a clear, luminous complexion from within. For anyone looking to improve skin dullness, restore a healthy glow, and keep their skin looking youthfully radiant for longer, this is an ideal addition to any daily skincare routine.

Inspired by IPL Photofacial Treatments Used at Beauty Clinics! Say Bye to Dull, Tired Skin With the Power of Light: CLINI SCIENCE white laser lotion

Between the hot and humid climate, UV rays, and airborne dust and particles, skin can't help but dry out over time, leading to a buildup of dead skin cells that leaves the complexion looking rough and dull. This whitening lotion, which has also received quasi-drug approval from the Japanese government, was developed to bring the principals behind photofacial treatment - highly regarded in beauty clinics - into your everyday skincare routine, delivering a brightening experience that combines both comprehensive skin renewal and deep-layer protection in one.

The formula contains three types of skin-friendly acids with different penetration characteristics, gently exfoliating dead skin cells and smoothing out rough, uneven pores. In synergy with episteme's proprietary whitening technology, it penetrates deep into the skin to precisely intercept melanin production signals, preventing skin dullness right at the source. This is slow-aging skincare at its most advanced: an approach that lets you enjoy healthy, radiant skin for years to come, regardless of age. The formula also contains highly penetrating nano-sized hyaluronic acid, which helps suppress UV ray-induced inflammation and cellular damage while reinforcing the skin's barrier function from all angles.

The texture is refreshingly light and non-viscous, absorbing smoothly without any stickiness, even during the more humid seasons. As the first step in your daily routine, it not only boosts the effectiveness of the skincare products that follow, but actively nurtures the skin, guiding it toward a luminous, clear, and luxurious complexion.

For skin that's seriously lacking in moisture or feeling rough due to dryness, the in-store staff's top recommendation is to use this lotion together with the STEM SCIENCE OIL. Layering this lotion after the oil has softened and plumped the skin allows hydration to sink in more deeply, keeping your skin supple and perfectly moisturized throughout the day.

Tighten Sagging* Pores ! Minimize the Appearance of Pore Shadows With "Topical HIFU": CLINI SCIENCE pore newing shot

As the skin on your cheeks starts to lose its firmness, pores gradually stretch and elongate. Add a dry stratum corneum to the mix, and vertical shadows begin to form - the kind that, depending on the light, can make you look older and leave your whole face looking tired and worn.

This pre-serum, applied immediately after cleansing, works deep within the stratum corneum to hydrate the skin and guide it toward a plump, flawless complexion*. Inspired by HIFU (High-Intensity Focused Ultrasound) beauty treatments, it aims to recreate the firmer and more lifted appearance associated with HIFU by enhancing the skin’s natural support from deep within. This helps smooth the appearance of pore shadows caused by uneven skin texture, resulting in a more even-looking complexion.

The formula features a special blend of loquat leaf extract and grape fruit extract as moisturizing essences, which directly targets pore concerns that stem from stratum corneum dryness as you age. By replenishing the hydration of the skin around the pores from deep within, it helps make imperfections far less noticeable. A combination of plum fruit extract and edelweiss extract further works to repair and refine skin surface roughness.

The serum glides on comfortably, enveloping the pores closely, making it perfectly suited for those with mature skin who are concerned about their pores. Incorporate it into your daily routine and with consistent care, it will gradually guide your skin toward a smoother, more refined texture where the pores become less and less visible.

*Sagging: Refers to the appearance of pores becoming more noticeable due to dryness in the stratum corneum
*Plump, flawless complexion: Hydrated skin with less noticeable pores

Wake Up to Skin That Surprises You! An “Oral Stem Cell Treatment” That Restores Skin Firmness from Head to Toe: STEM SCIENCE drink

The sweets, sugary drinks, and refined carbohydrates you enjoy every day can quietly trigger a process called "glycation" in your skin. This causes collagen in the body to yellow and stiffen, and when those effects reach your face, the result is dullness, a loss of translucency, and visibly reduced firmness.

As the inner care line of the STEM SCIENCE series, this drink brings anti-glycation and skin brightening research into the world of oral supplementation. The formula fuses proprietary anti-glycation ingredients with stem cell care components, and is further enriched with indulgent skin-beautifying ingredients including swallow nest extract, pearl extract, and hydrolyzed silk - all concentrated into a single 10 mL mini bottle. It has even taken home a Best Cosmetics Award from one of Japan's most respected beauty magazines!

Whether you're preparing for a special occasion the night before or need an intensive boost on days when fatigue is written all over your face, this is the luxurious pick-me-up your skin deserves. One bottle a day is all it takes - letting inner care and external skincare work in sync to deliver a surge of firmness and deep hydration that you can feel from head to toe.

Visit and Experience the Precision Skincare and Slow-Aging Beauty Philosophy Born from 100 Years of Pharmaceutical Research

True slow-aging skincare isn't just about addressing the signs that come with age - it's about supporting the skin to maintain a stable, youthful condition over the long term.

Born from Rohto Pharmaceutical, a Japanese pharmaceutical company with over 100 years of history, episteme brings together decades of research in life sciences and the unique R&D capabilities of a pharmaceutical company, continuously exploring what keeps skin looking young and what it takes to sustain that. From the appearance of the eye area to skin’s radiance, translucency, and ability to recover, episteme's diverse range of products supports the management of that youthful look that so easily slips away with time, helping you maintain skin that stays even, luminous, and plump, no matter your age.

If you're starting to notice your youthfulness gradually fading, stop by an episteme counter at a department store near you. A professional skin analysis and one-on-one consultation with a beauty advisor will help you find the slow-aging skincare plan that's just right for you. And don't forget to show this article at the counter! Readers can receive a free sample gift! Come and discover for yourself the slow-aging philosophy that only a century of pharmaceutical expertise could create.