Its objective: to offer women and men, in any climate, the visible and lasting effectiveness of Nature's resources. Each ingredient is scientifically analysed and dosed to give the skin the means to recover its balance, alleviate its problems and slow down the signs of time.

The effectiveness of each product - firming action, anti-wrinkle, moisturising, anti-glycation activity, anti-oxidant, anti-spot ..., is objectively validated by studies conducted by independent laboratories :

• Objective tests by instrumental measurements
• Efficacy and tolerance tests under dermatological control
• Tests on cell cultures and skin explants

Driven by exacting standards and pharmaceutical rigour, our team of experts (doctors, pharmacists, chemical engineers, biologists, and bacteriologists) develop formulas with the right concentrations, with the best efficacy/safety ratio for visible and lasting results without aggressiveness.

Our gluten-free and mostly vegan formulas, contain on average 92% ingredients of natural origin, preferably organic. Each ingredient is rigorously selected and controlled by our laboratories, both on a physicochemical and bacteriological level.

Our formulation charter respects the strictest international regulations. It bans Parabens, Methylisothiazolinone (MIT), Aluminium salts, Butylhydroxyanisole (BHA), Sodium Lauryl Sulfate (SLS), Phthalates, Triclosan, GMOs, proven endocrine disruptors*. It continuously monitors the evolution of its formulas towards ever more naturalness. Our production, 100% French, respects the GMP - ISO 22716 quality criteria at all stages of manufacture.

*According to the WHO definition and with reference to the Echa list (European Chemicals Agency)

Our treatment rituals in Spas and Institutes are based on our long experience and, since our creation, on our holistic vision of care and Wellness: chiseled protocols, Eastern and Western techniques, exclusive methods, combination of manual and instrumental techniques... This know-how, we teach to our community of beauty and Wellness professionals to bring you a visible result and to make you experience a great moment of relaxation.

Every Yon-Ka treatment is an expert and subtle alchemy between the professional's hand, the hand that feels and gives, the instrument that extends and strengthens it, the essential oil that optimises it.

From the very first Yon-Ka treatment, you see the difference! To the sight and touch, your skin glows, becomes smoother and more beautiful even without make-up. The skin texture is refined, the complexion is brightened.

A Yon-Ka treatment is a unique, aromatic, holistic and personalised experience combining dermatological effectiveness and powerful multi-sensorial benefits.

And when efficiency is combined with pleasure, it is then the whole being that lights up; the skin regains its radiance, signs of fatigue fade, tensions are reduced under the action of the massage and relaxing or energizing essential oils of lavender, sweet orange, rosemary, jasmine...and those of the Yon-Ka Quintessence.

A parenthesis of Wellness that makes our clients say: "after a Yon-Ka treatment, I feel good, and it shows"

Discover the Yon-Ka experience in our Spas and Partner institutes

Today, more than ever, because we have the greatest respect for Nature and the women and men who work to protect it, our Laboratories make it a point of honour to seek out sustainable supply chains that are mindful of biodiversity and the environment.

Here are some concrete illustrations:

• Many of the plants used in our productions are native to France (lavender, helichrysum, cypress, Brittany algae, beech buds, arnica.....)
• Our tubes, cases, leaflets and glass bottles are 100% recyclable,
• We finance the planting of fields of flowers and the installation of hives and colonies of bees with the association " Un Toit Pour Les Abeilles "
• We are committed to making our mark by collaborating with organizations that support the fight against breast cancer. Each year, during October, we pledge to donate to the CURE Foundation.