Yonka

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 Muller. 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 skincare 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, and blend essential oils 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 to 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 feedback from the users. Clients rave about these 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.