Yon-Ka products was created in 1957 by two brothers, both botanists, who rejected the move to pharmaceuticals for skin care and who eventually perfected the stabilization of essential oils in a water-based emulsion. This allowed the inclusion of both essential oils and plant extracts in the same product, thus both treating and nourishing the targeted tissues.

Yon-Ka is so committed to botanical and specifically aromatherapeutic treatment, that only four of its products contain animal extracts, and those (in the anti-aging line) are synthetically produced.Yon-Ka products is a favorite in European salons and spas, where is it known to be seriously therapeutic: its pure emulsion, the base product of its line, is used in French burn centers. Yon-Ka products are by definition strongly aromatic and easily win client loyalty, which is greatly enhanced when the efficacy of the products becomes evident.