Seasonly, a beauty brand from Paris, is bringing its original philosophy "Skin Building" to Japan.
It offers a new approach that cares for skin from the foundation, combining high-performance skincare with vegan formulas, clean ingredient design and facial massage.
Seasonly will hold the pop-up "Glow Bar" at Isetan Shinjuku from September 16 to October 6, 2026, marking its debut in Japan.
The "Skin Building" philosophy advocated by Seasonly
Seasonly cherishes its own belief that "skin cannot be considered separately from the structure that supports it."
Founded in Paris in 2018 by Fanny Pesioda, the brand puts emphasis on the manual techniques of facialists and has established its own approach that combines skincare and facial care.
"Skin Building," the philosophy that symbolizes the brand, aims to support everyday skin as a habit that combines high-performance skincare, precise facial massage and simple facial gestures you can keep up every day.
What comes out of this approach is the ideal state Seasonly calls "French Glow."
It refers to skin that is full of moisture, radiant and lively in appearance, and to an expression that is uniquely your own, relaxed yet with a naturally defined contour.
Combining skincare and facial care
While much skincare starts with an approach to the skin surface, Seasonly regards the face as a "living structure in which skin, connective tissue and facial muscles constantly influence one another."
Based on the idea that, as we age, changes in skin quality, muscle tension and tissue structure affect the contour, firmness and impression of the face, it aims to care not only for the skin but also for the structure that supports it.
According to Jessica de Lacour Chussac, CEO and founder of Seasonly, "We believe beauty should be seen as something 'alive.' The face is constantly moving, forming expressions and changing. Skin Building is an approach that supports the skin while respecting the face's natural structure and expressions, by combining skincare with 'the touch of the hands.'"
The relationship between skin and muscles from a scientific perspective
A study published in the academic journal "Scientific Reports" in 2023 reported that 16 weeks of exercise among Japanese women aged 41 to 59 who did not regularly exercise led to improved facial skin elasticity and improved structure of the upper dermis.
An increase in dermal thickness was also confirmed in the group that did resistance exercise.
This study looked at whole-body exercise and does not directly prove the effect of facial exercise itself, but it offers useful insight for understanding the relationship between muscle activity and skin structure.
(Source: Nishikori S, Yasuda J, Murata K, Takegaki J, Harada Y, Shirai Y, Fujita S. “Resistance training rejuvenates aging skin by reducing circulating inflammatory factors and enhancing dermal extracellular matrices.” Scientific Reports 13, 10214 (2023). DOI: 10.1038/s41598-023-37207-9)
Facial muscles are said to decrease in volume with age and to begin losing flexibility as early as one's 30s.
This change is thought to affect the tension of the face, the distribution of volume and the overall skeletal impression, changing the impression of the face from within the skin.
"Face Recurve," research by the French plastic surgeon Claude Le Louarn, also suggests that hollows and sagging in the face may be caused not only by gravity but also by overly tense facial muscles pushing and moving the deeper fat tissue.
Seasonly says it is designed not to artificially "add" volume but to support the skin's natural suppleness and radiance through its formulas and routines, moving toward a smooth, natural contour and a "plumpness" that looks beautiful in the light.
According to Bruno Cado, Director of the Research Division at the French Institute of Myology, "Facial aging is not only a matter of the skin. It is part of a deeper mechanism involving changes in the facial muscles and the connection between muscles and skin. When the balance of the muscles is lost with age, changes occur in the pulling force, the distribution of volume and the structure of the face as a whole. In other words, the skin is a kind of 'mirror' that reflects the mechanical and biological changes in the muscles."
An uncompromising commitment to clean beauty
The "Skin Building" philosophy is also reflected in the ingredient design of the products.
Seasonly's skincare is formulated to be vegan and contains at least 95% naturally derived ingredients.
It also maintains its own "no-list" (a list of ingredients it does not use), a policy of avoiding not only more than 200 individual ingredients but also entire categories of ingredients, such as mineral oils and petroleum-derived ingredients, plastic-derived ingredients and polymers, parabens, PEGs (polyethylene glycol), phthalates, formaldehyde-releasing ingredients, and certain controversial UV filters and preservatives.
All animal-derived ingredients, including honey, propolis and animal-derived colorants, are also excluded.
High-performance formulas and "facial fitness"
At the heart of "Skin Building" are formulas developed with a focus on skin function itself.
They aim to support moisture and barrier function, radiance and firmness, and to care for signs of aging.
TensioLift
"TensioLift," the line that symbolizes the brand, is the centerpiece of the daily skincare routine.
Active ingredients that address visible signs on the skin that accompany facial tension have been selected and formulated.
It contains Spilanthes and is designed to leave the skin looking smooth and firm.
Facial massage and daily gestures are also essential parts of this care.
C-Activ+ Serum
This serum is designed to moisturize and to protect the skin from dryness and external irritants.
It aims to leave the skin looking bright and even.
Night Oil
"Night Oil," one of the most popular items in the Seasonly routine, supports the skin's barrier function and helps with moisture care at night.
By morning, it is said to leave the skin supple, full of moisture and bouncy.
Combined with Seasonly's beauty tools and self-massage techniques, these products turn daily skincare into a more active habit.
From Parisian facialism to "facial fitness"
Seasonly's expertise extends not only to products but also to facial care.
At its 10 Skin Studios in France and more than 120 partner salons, skilled facialists carry out the "French Sculpting" protocol.
This is a treatment using manual techniques customized to each person's skin type and muscle condition, combining Kobido (the traditional method), lymphatic approaches and "Face Sculpting®" techniques.
Kobido, born in Japan, was revived in Paris, and this arrival in Japan could be called a "return" to its roots.
This approach can also be practiced at home.
Seasonly's facialists teach simple gestures that can be added to a daily routine, so that facial care continues between salon visits.
Seasonly's approach, which combines skilled manual techniques, high-performance skincare and facial movements kept up every day, is called "Facial Fitness."
It is a way of thinking that treats the face not as something merely to "cover" or "correct," but as something to care for actively.
Experience "French Glow" at Isetan Shinjuku
From September 16 to October 6, 2026, Seasonly will open its first-ever "Glow Bar" in Japan on the Beauty Apothecary floor on the first basement level of Isetan Shinjuku.
This pop-up will be the first opportunity for Japanese consumers to try Seasonly's skincare collection in person and experience the brand philosophy of "French Glow."
At the venue, you can enjoy the following experiences.
Discover the "Skin Building" philosophy
Try Seasonly's signature skincare items
Experience Seasonly's original facial massage
Learn simple "facial fitness" gestures you can do at home
Find out how skincare, movement and "touch" are connected
Purchase Seasonly products at the venue
Experience "French Glow" firsthand
Seasonly's arrival in Japan marks the start of a new chapter for this Paris-born brand.
Its original philosophy "Skin Building," its clean, vegan skincare formulas and its French-trained facialist expertise are all brought into this expansion in Japan.
Seasonly explains that "French Glow" does not mean "perfection" but refers to a face with a natural expression that is lively, rested, radiant and uniquely your own.
Seasonly Paris official website: https://seasonly.fr/en/collections/bestseller-seasonly-cosmetiques-naturels
Seasonly official Instagram: https://www.instagram.com/seasonly/?hl=en
