1954 to 1967 : turning passion into creation
Pioneers in aromatherapy, Cécile, Ernst and Charles Muhlethaler are passionate about aromatherapy and in 1954 they found the Laboratories Multaler. At the time, the wealth of ancestral and empirical knowledge they were able to draw upon was shared only by a small number of scientists, chemists and doctors.
The Essential Oils

At first they focus on the subtle aromas of the botanical world, the essential oils charged with solar energy. They experiment on themselves, family and friends, the therapeutic properties of the plants: purifying, healing, psychotropic…
Their research leads them to a breakthrough discovery: “Quintessence” a unique combination of 5 essential oils from the Mediterranean which becomes the cornerstone of their future skin care line.

Plant and fruit extracts

But why limit oneself to the essential oils, when so many other wonders known for hundreds of years can be drawn from plants? 
They broaden their research, blend essential oils together with plant and marine extracts, in lotions, creams and massage oils, unveiling new synergies. Medical doctors, physiotherapists and aestheticians are involved in the evaluation and testing. Success is immediate and the professionals are appealed both by the originality, the pleasant feel of the products and the power of their balancing aromas only surpassed by their efficiency, their immediate and visible results and the positive feed-back from the users. Clients rave about this new sensations in simple words: “thanks to the treatment it is as if my skin is breathing again, I feel good and it shows”
From this moment on the products are available with the brand name YON-KA, a symbolic and mysterious name.
  1. Yon--Ka Escale Beaute
    Escale Beauté
    35mins €40
    A well-deserved pause to give your skin its vitamins, restore your energy and help you quickly rediscover a restful look in a dynamic atmosphere rich with the scents of citrus and garrigue. A beauty break to provide your skin with vitamins and quickly find your glow in an ever-changing journey thru scents of citrus or Mediterranean garrigue. A quick yet efficient approach to relaxation to be recommended at any time. RESULT: A bright and glowing complexion!.
  2. Morbi nunc odi
    Le Grand Classique
    75mins €70
    One of the most elaborate, complete facials. Leaves you with clean, perfectly balanced skin and a radiant complexion. Customized and recommended at any age, it centers on Yon-Ka’s exclusive deep cleansing regimen: in 5 successive steps carried out with the utmost care in the oxygenating atmosphere of the 5 Quintessence* essential oils, the pure glow of the epidermis is revealed, one step at a time. Le Grand Classique is a cornerstone facial to indulge in once a month to keep skin healthy and in top condition. RESULT: Purified skin, a toned complexion, and optimum relaxation.
  3. Morbi nunc odi
    Hydralessence Face
    60mins €75
    Tightness, stinging… is your skin becoming rough and dull or being marked by fine lines? This is a cry for help: your skin is drying out. This high-performance treatment will quickly help to restore its balance, suppleness, and softness. What’s the secret? The powerfully softening action of seaweed and fruit extracts; the use of 2 refreshing masks, one including a massage with a fine aromatic mist; and the application of a repairing, hydration-reactivating duo using Yon-Ka techniques. The Yon-Ka touch during this facial: the application of a soft gel peel with citrus extracts on the hands, to hydrate and exfoliate simultaneously. Choose Hydralessence year-round, as soon as your skin starts showing symptoms of dehydration. RESULT:  Your skin is renewed, soothed, and rebalanced; softness and beauty are restored.
  4. Morbi nunc odi
    Excellence Code
    70 mins €95
    The EXCELLENCE CODE Salon Treatment is more than just a global anti-aging treatment. It is above all an exceptional Yon-Ka treatment. Anti-aging expertise, massages, relaxation, wellbeing and powerful Quintessence scents combine, succeed one another and complete each other, resulting in a unique moment.
  5. Morbi nunc odi
    75mins €85
    Lifting and restructuring, this anti-aging treatment acts like a “personal trainer” for the skin. By stimulating the skin’s natural regeneration processes, it optimizes firmness, reduces wrinkles and fine lines, and intensifies glow. Rich in redensifyiing thickening hibiscus and lupine peptides and highly hydrating marine collagen and hyaluronic acid, it reinforces the structure of the epidermis and uses co-enzyme Q10 to protect the skin cells from free-radical attacks. RESULT: A visibly younger skin that is firmer and smoother, redefined facial contours.
  6. Morbi nunc odi
    Alpha Vitale 
    70mins €75
    Dull, tired skin? Highly technical, this anti-aging treatment brings out the skin’s natural glow, restoring smoothness and youth as early as the 1st treatment. A series of 4 sessions helps to visibly diminish the signs of time. Under the rejuvenating, intensely hydrating action of controlled fruit acids, the epidermis is gently regenerated, cellular renewal is intensified, the complexion is cleared, wrinkles and fine lines vanish. Enjoy once to boost radiance, or follow a course of 4 sessions that build on one another for a spectacular anti-aging action. RESULT: Skin that is supple, smooth; the complexion glows.