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Promotion
Yon-ka: Plant power

Benefiting from its founders’ passion for plants, Yon-Ka’s new brand identity reflects its past and its continued research into the healing power of plants which enables the company to craft innovative formulas that deliver results


French aromatherapy pioneers Cécile, Ernest and Charles Mühlethaler established the Laboratories Multaler in 1954, armed with a passion for understanding the therapeutic properties of plants from around the globe.

They developed a line of phyto-aromatic skincare products, known as Yon-Ka, based on knowledge shared through their network of scientists, chemists and doctors.

Today, the family business is led by the founders’ daughter and niece, Françoise (CEO) and Catherine (MD) Mühlethaler – a biochemist and an aesthetician – whose complementary skills have brought a unique dimension to the brand.

Over the years, the two have collaborated to ensure Yon-Ka plays a pioneering role in the creation of holistic skincare by overseeing the development of products that contain unique combinations of aromatherapy, aromachology, phytotherapy and gemmotherapy ingredients, that harness the power of nature to offer real results for authentic beauty at every age.

Product efficacy
Yon-Ka’s collection of almost 100 face and body retail and professional products are created from an average of 92 per cent of natural ingredients. Most of these products are vegan, all are gluten free and organic sourced ingredients are used wherever possible. They also comply with European manufacturing regulations that guarantee the highest levels of efficacy and safety. The raw materials and the finished products are not tested on animals.

Product efficacy is vigorously tested during clinical studies conducted in independent testing laboratories and supervised by expert dermatologists. Safety assessments on cell cultures are conducted by independent toxicologists and physico-chemical and bacteriological controls are conducted by Yon-Ka’s expert laboratory scientists, while product production and primary packaging takes place in clean rooms within optimal safety conditions to guarantee maximum bacteriological security.

New brand identity
The company has recently redefined its brand identity to promote The Experience of Phyto-Aromatic Skincare through new, authentic, nature-focused visuals that convey its respect for nature. These subtle changes reflect Yon-Ka’s continued commitment to ensuring every treatment is created using ingredients and technology that are kind to the planet and offer users unique experiences that are effective and pleasing to the senses.

The new brand platform also promotes Yon-Ka’s commitment to becoming increasingly eco- and nature-inspired within its operations. The new visuals convey care, expertise and natural product know-how, together with a sensorial approach to wellness through light and shadow designs that convey warm elegance, soft faces and aesthetic bodies.

Spa engagement
Six thousand international spa professionals already use Yon-Ka’s comprehensive range of phyto-aromatic skincare products for their clients who want natural, results-driven treatments.


An effective treatment solution is available for every client’s beauty or wellbeing concern, which therapists can identify through the Yon-Ka skin diagnostic test. For example, the Aroma-Fusion body care treatments include body scrubs, massages and rituals that can be performed using different therapy techniques and in varying degrees of intensity. A choice of essential oils offer olfactory notes and effects that meet individual needs.

Therapists can expand their product knowledge, while learning specific treatment protocols and techniques either through introductory and advanced training at Yon-Ka training centres or within their spa setting or through virtual sessions. From a business point of view, Yon-Ka can assist spa and wellness operators with the creation of specific spa concepts by devising treatment menus and adapting the spa environment to suit the needs of the clientele.

Both therapists and reception staff can also be trained in how best to promote home-care products, while a marketing toolkit is available to help them communicate effectively with current and potential Yon-Ka customers.

More: www.yonka.com
Five company values

• Effectiveness through nature – products are based on a combination of four plant sciences and active ingredients with proven efficacy

• Excellent formulations – using organic, gluten free ingredients that meet the criteria of a strict charter developed by a team of experts

• Expert techniques – using unique spa treatment techniques, including Eastern and Western protocols

• Experience for the senses – essential oils ensure relaxing, aromatic treatments that benefit the body and mind

• Ethical commitments – Eco-friendly, 100 per cent French-made products and a brand committed to caring for the planet.

Yon-Ka hero products

• Yon-Ka Lotion - created from 99.6 per cent of natural ingredients including the brand’s Quintessence - essential oils of lavender, geranium, rosemary, cypress and thyme

• Hydra N°1 hydrating product range

• Age Exception, the premium global anti-aging collection

• 4 Boosters - a range of products that can be used to personalise day and night creams - tailoring them to problems such as fatigue, the changing seasons and harsh external factors, according to individual needs

• Phyto-Bain – used in the bath or shower - the ‘spa at home’ essential for draining and toning the skin thanks to the powerful and balancing lavender, helichrysum, petitgrain, rosemary and sage essential oils.

Yon-Ka’s phyto-aromatic skincare range allows for natural, results-driven treatments

Read more from this issue of Spa Business magazine

View contents of Spa Business 2022 issue 1

  • "When you know you're doing things right, you have power" – Deborah Szekely talks to Spa Business
  • Editor's letter: Announcing WellHOF
    Liz Terry celebrates the purpose and passions of Deborah Szekely
  • Spa People: Suzanne Corcoran
    Suzanne Corcoran explains her new Scandinative Nordic spa model
  • Spa People: Zoe Wall
    Zoe Wall talks about driving the global spa and wellness agenda at Kerzner
  • New opening: Healing oasis
    Zoya, a new integrative health and wellbeing retreat, is opening in the Middle East, as Megan Whitby reports
  • Interview: Deborah Szekely
    As the 'godmother of spa' approaches her 100th birthday, Jan Kitchen travelled to Rancho La Puerta to find out more about her extraordinary life
  • First Person: Siempre Mejor!
    After 82 years, Rancho La Puerta is still beloved among guests around the world, who return year after year for a dose of holistic wellbeing. Jane Kitchen spent a week at the Mexican resort to discover how the spirit of ‘Siempre mejor!’ or ‘Always better!’ lives on in the 21st century
  • Everyone's talking about: Going gender neutral
    Operators have the opportunity to adopt compassionate practices that welcome all members of the community, as Kath Hudson discovered
  • Sponsored: Phytomer: Celebrating the sea
    The story surrounding Phytomer is one of a unique wellness vision, a loyal family, remarkable marine science and pioneering skincare. We talk to deputy general manager Mathilde Gédouin-Lagarde as the company celebrates its 50th anniversary
  • GWS: Boston strong
    If you missed the GWS – or even if you were there – Jane Kitchen's detailed report will give you endless useful actionable insights
  • Promotion: Yon-ka: Plant power
    Benefiting from its founders’ passion for plants, Yon-Ka’s new brand identity reflects its past and its continued research into the healing power of plants which enables the company to craft innovative formulas that deliver results
  • First person: Paradise at Preidlhof
    Lisa Starr travelled to Italy to interview Patrizia Bortolin for Spa Business and experience all that Preidlhof has to offer
  • Q&A: Patrizia Bortolin
    Lisa Starr talks to the award winning visionary who’s injecting new vigour into Preidlhof
  • Promotion: Reconnect with ISPA
    After a two-year absence, ISPA’s annual Conference offers its members an opportunity to reconnect and to learn more about the available tools that can help them recharge their businesses
  • Q&A: Daniele Vastolo
    Chiva-Som has opened a major new property in Qatar, with treatments focused on Traditional Arabic and Islamic Medicine. We talk to the GM
  • Research: Human nature
    Anne Dimon reports on the latest research insights from the Wellness Tourism Association
  • Saunas: Aufguss
    The first aufguss sauna experience in the US has opened in Las Vegas, as Cassandra Cavanah reports
  • Software: Getting (Hyper) personal
    Software that drives generational marketing can create hyper-personalised offerings, as Karen Maxwell discovers
  • Supplier showcase: Art of Cryo: Best of both worlds
    Art of Cryo is blending its high-performance cryotherapy solutions with intermittent vacuum therapy to offer a complete and effective whole-body wellness experience
  • Promotion: Comfort Zone
    From 2022, Comfort Zone’s products are going plastic-neutral, certified by Plastic Bank
  • Promotion: Iyashi Dôme driving profits at the VL Paris ‘beauty apartment’
    When Vanessa Landreau set up VL Paris she installed an Iyashi Dôme sauna bed to complement her salon’s integrated, preventive and regenerative beauty treatment concept.
  • Finishing touch: Elevating sound
    Sound therapy has gone up a gear, with new service launches and tech hitting the market, as Spa Business reports
/ Yon-Ka
Therapists are trained in the product benefits and treatment techniques
Therapists are trained in the product benefits and treatment techniques / Yon-Ka
FEATURED SUPPLIERS

MSpa Oslo series: a timeless bestseller
The MSpa Oslo series is a perennial bestseller in global markets. With innovative engineering and premium performance, this completely portable spa line-up is expertly designed to meet the needs of customers worldwide. [more...]

HPO Tech brings design-led hyperbaric systems to the spa floor
Hyperbaric oxygen therapy has moved well beyond the clinic and spa operators represent the fastest-growing market for the technology. [more...]
+ More featured suppliers  
COMPANY PROFILES
UK Spa Association

Our mission is to raise awareness of our industry within schools, colleges, society and crucially at [more...]
Elemis

Elemis was founded in London in 1989 by Linda Steiner whose vision was to create a skincare range as [more...]
+ More profiles  
CATALOGUE GALLERY
 

+ More catalogues  

DIRECTORY
+ More directory  
DIARY

 

23-26 Aug 2026

Elevate Spa Riviera Maya Edition

The Riviera Maya Edition Kanai, Playa del Carmen, Mexico
10-12 Sep 2026

ASEAN Patio Pool Spa Expo 2026

MITEC Kuala Lumpur,Malaysia, Malaysia
+ More diary  
 
ABOUT LEISURE MEDIA
LEISURE MEDIA MAGAZINES
LEISURE MEDIA HANDBOOKS
LEISURE MEDIA WEBSITES
LEISURE MEDIA PRODUCT SEARCH
 
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ADVERTISE . CONTACT US

Leisure Media
Tel: +44 (0)1462 431385

©Cybertrek 2026
Uniting the world of spa & wellness
Get Spa Business and Spa Business insider digital magazines FREE
Sign up here ▸
News   Products   Magazine   Subscribe
Promotion
Yon-ka: Plant power

Benefiting from its founders’ passion for plants, Yon-Ka’s new brand identity reflects its past and its continued research into the healing power of plants which enables the company to craft innovative formulas that deliver results


French aromatherapy pioneers Cécile, Ernest and Charles Mühlethaler established the Laboratories Multaler in 1954, armed with a passion for understanding the therapeutic properties of plants from around the globe.

They developed a line of phyto-aromatic skincare products, known as Yon-Ka, based on knowledge shared through their network of scientists, chemists and doctors.

Today, the family business is led by the founders’ daughter and niece, Françoise (CEO) and Catherine (MD) Mühlethaler – a biochemist and an aesthetician – whose complementary skills have brought a unique dimension to the brand.

Over the years, the two have collaborated to ensure Yon-Ka plays a pioneering role in the creation of holistic skincare by overseeing the development of products that contain unique combinations of aromatherapy, aromachology, phytotherapy and gemmotherapy ingredients, that harness the power of nature to offer real results for authentic beauty at every age.

Product efficacy
Yon-Ka’s collection of almost 100 face and body retail and professional products are created from an average of 92 per cent of natural ingredients. Most of these products are vegan, all are gluten free and organic sourced ingredients are used wherever possible. They also comply with European manufacturing regulations that guarantee the highest levels of efficacy and safety. The raw materials and the finished products are not tested on animals.

Product efficacy is vigorously tested during clinical studies conducted in independent testing laboratories and supervised by expert dermatologists. Safety assessments on cell cultures are conducted by independent toxicologists and physico-chemical and bacteriological controls are conducted by Yon-Ka’s expert laboratory scientists, while product production and primary packaging takes place in clean rooms within optimal safety conditions to guarantee maximum bacteriological security.

New brand identity
The company has recently redefined its brand identity to promote The Experience of Phyto-Aromatic Skincare through new, authentic, nature-focused visuals that convey its respect for nature. These subtle changes reflect Yon-Ka’s continued commitment to ensuring every treatment is created using ingredients and technology that are kind to the planet and offer users unique experiences that are effective and pleasing to the senses.

The new brand platform also promotes Yon-Ka’s commitment to becoming increasingly eco- and nature-inspired within its operations. The new visuals convey care, expertise and natural product know-how, together with a sensorial approach to wellness through light and shadow designs that convey warm elegance, soft faces and aesthetic bodies.

Spa engagement
Six thousand international spa professionals already use Yon-Ka’s comprehensive range of phyto-aromatic skincare products for their clients who want natural, results-driven treatments.


An effective treatment solution is available for every client’s beauty or wellbeing concern, which therapists can identify through the Yon-Ka skin diagnostic test. For example, the Aroma-Fusion body care treatments include body scrubs, massages and rituals that can be performed using different therapy techniques and in varying degrees of intensity. A choice of essential oils offer olfactory notes and effects that meet individual needs.

Therapists can expand their product knowledge, while learning specific treatment protocols and techniques either through introductory and advanced training at Yon-Ka training centres or within their spa setting or through virtual sessions. From a business point of view, Yon-Ka can assist spa and wellness operators with the creation of specific spa concepts by devising treatment menus and adapting the spa environment to suit the needs of the clientele.

Both therapists and reception staff can also be trained in how best to promote home-care products, while a marketing toolkit is available to help them communicate effectively with current and potential Yon-Ka customers.

More: www.yonka.com
Five company values

• Effectiveness through nature – products are based on a combination of four plant sciences and active ingredients with proven efficacy

• Excellent formulations – using organic, gluten free ingredients that meet the criteria of a strict charter developed by a team of experts

• Expert techniques – using unique spa treatment techniques, including Eastern and Western protocols

• Experience for the senses – essential oils ensure relaxing, aromatic treatments that benefit the body and mind

• Ethical commitments – Eco-friendly, 100 per cent French-made products and a brand committed to caring for the planet.

Yon-Ka hero products

• Yon-Ka Lotion - created from 99.6 per cent of natural ingredients including the brand’s Quintessence - essential oils of lavender, geranium, rosemary, cypress and thyme

• Hydra N°1 hydrating product range

• Age Exception, the premium global anti-aging collection

• 4 Boosters - a range of products that can be used to personalise day and night creams - tailoring them to problems such as fatigue, the changing seasons and harsh external factors, according to individual needs

• Phyto-Bain – used in the bath or shower - the ‘spa at home’ essential for draining and toning the skin thanks to the powerful and balancing lavender, helichrysum, petitgrain, rosemary and sage essential oils.

Yon-Ka’s phyto-aromatic skincare range allows for natural, results-driven treatments

Read more from this issue of Spa Business magazine

View contents of Spa Business 2022 issue 1

  • "When you know you're doing things right, you have power" – Deborah Szekely talks to Spa Business
  • Editor's letter: Announcing WellHOF
    Liz Terry celebrates the purpose and passions of Deborah Szekely
  • Spa People: Suzanne Corcoran
    Suzanne Corcoran explains her new Scandinative Nordic spa model
  • Spa People: Zoe Wall
    Zoe Wall talks about driving the global spa and wellness agenda at Kerzner
  • New opening: Healing oasis
    Zoya, a new integrative health and wellbeing retreat, is opening in the Middle East, as Megan Whitby reports
  • Interview: Deborah Szekely
    As the 'godmother of spa' approaches her 100th birthday, Jan Kitchen travelled to Rancho La Puerta to find out more about her extraordinary life
  • First Person: Siempre Mejor!
    After 82 years, Rancho La Puerta is still beloved among guests around the world, who return year after year for a dose of holistic wellbeing. Jane Kitchen spent a week at the Mexican resort to discover how the spirit of ‘Siempre mejor!’ or ‘Always better!’ lives on in the 21st century
  • Everyone's talking about: Going gender neutral
    Operators have the opportunity to adopt compassionate practices that welcome all members of the community, as Kath Hudson discovered
  • Sponsored: Phytomer: Celebrating the sea
    The story surrounding Phytomer is one of a unique wellness vision, a loyal family, remarkable marine science and pioneering skincare. We talk to deputy general manager Mathilde Gédouin-Lagarde as the company celebrates its 50th anniversary
  • GWS: Boston strong
    If you missed the GWS – or even if you were there – Jane Kitchen's detailed report will give you endless useful actionable insights
  • Promotion: Yon-ka: Plant power
    Benefiting from its founders’ passion for plants, Yon-Ka’s new brand identity reflects its past and its continued research into the healing power of plants which enables the company to craft innovative formulas that deliver results
  • First person: Paradise at Preidlhof
    Lisa Starr travelled to Italy to interview Patrizia Bortolin for Spa Business and experience all that Preidlhof has to offer
  • Q&A: Patrizia Bortolin
    Lisa Starr talks to the award winning visionary who’s injecting new vigour into Preidlhof
  • Promotion: Reconnect with ISPA
    After a two-year absence, ISPA’s annual Conference offers its members an opportunity to reconnect and to learn more about the available tools that can help them recharge their businesses
  • Q&A: Daniele Vastolo
    Chiva-Som has opened a major new property in Qatar, with treatments focused on Traditional Arabic and Islamic Medicine. We talk to the GM
  • Research: Human nature
    Anne Dimon reports on the latest research insights from the Wellness Tourism Association
  • Saunas: Aufguss
    The first aufguss sauna experience in the US has opened in Las Vegas, as Cassandra Cavanah reports
  • Software: Getting (Hyper) personal
    Software that drives generational marketing can create hyper-personalised offerings, as Karen Maxwell discovers
  • Supplier showcase: Art of Cryo: Best of both worlds
    Art of Cryo is blending its high-performance cryotherapy solutions with intermittent vacuum therapy to offer a complete and effective whole-body wellness experience
  • Promotion: Comfort Zone
    From 2022, Comfort Zone’s products are going plastic-neutral, certified by Plastic Bank
  • Promotion: Iyashi Dôme driving profits at the VL Paris ‘beauty apartment’
    When Vanessa Landreau set up VL Paris she installed an Iyashi Dôme sauna bed to complement her salon’s integrated, preventive and regenerative beauty treatment concept.
  • Finishing touch: Elevating sound
    Sound therapy has gone up a gear, with new service launches and tech hitting the market, as Spa Business reports
/ Yon-Ka
Therapists are trained in the product benefits and treatment techniques
Therapists are trained in the product benefits and treatment techniques / Yon-Ka
LATEST NEWS
One in three spa practitioners have considered leaving the industry due to concerns about their own wellbeing
A new survey of UK and international spa practitioners shows that stress, burnout and wellbeing concerns have caused one in three respondents to consider leaving the industry.
UK updates physical activity guidelines with focus on daily movement
The UK's four Chief Medical Officers have published a refreshed edition of Physical activity guidelines: UK Chief Medical Officers' report, updating the evidence that underpins the nation's physical activity recommendations and placing greater emphasis on strength, balance, reducing sedentary behaviour and, for the first time, supporting people taking weight loss medications.
Sauna advocate Becky Pelkonen drafts global public sauna-bathing charter
Becky Pelkonen, the sauna advocate and researcher, has unveiled the draft of a global public sauna-bathing charter.
Marriott International partners with Fitwel for wellness solutions across its residential portfolio
Marriott International has partnered with Fitwel, a healthy building certification system that aims to optimise occupant health.
Anna Bjurstam steps down from Six Senses to build new company Wahayla
Anna Bjurstam has left her role as Wellness Pioneer at Six Senses Hotels and Resorts and launched a new wellness, longevity and “consciousness consultancy” called Wahayla.
Fairmont Cheshire, The Mere, opens with spa philosophy of ‘Wellness without Walls’
Fairmont Cheshire, The Mere, has opened today (10 July) in the Northwest of England with a 1,715sq m Fairmont Spa that has been designed using a ‘Wellness without Walls’ concept.
'Minor wellness hotels' recorded the strongest growth across top KPIs in 2025, finds RLA Global
Wellness hotels generating less than US$1 million (€932,700, £785,200) – or 10 per cent of total revenue from wellness and leisure – recorded the strongest RevPAR and TRevPAR growth in 2025 across categories when compared with 2024, according to the latest Wellness Real Estate Report by RLA Global, produced in partnership with P and L benchmarking firm HotStats.
Lefay Resorts introduces emotional dance classes to offer experiences that foster connection
Lefay Resorts, the portfolio of two luxury wellness properties in Italy, has added emotional dance classes and group cold plunge sessions in response to market demand for social connection.
Robert Thurman: a life dedicated to enlightenment
Robert Thurman, an expert on Tibetan Buddhism and the spiritual director of Menla Retreat and Dewa Spa in Woodstock, has died, aged 84.
BBSpa Group to launch holistic bathhouse Atera in Glasgow
International spa, wellness and longevity consultancy, BBSpa, will launch a new bathhouse called Atera in Glasgow, Scotland, in September.
Ananda in the Himalayas publishes Ayurvedic cookbook
Ananda in the Himalayas, India, has published its first cookbook, built on the wellness retreat’s 25 years of Ayurvedic cuisine expertise.
Minor Hotels appoints Aditya Saluja as commercial director for MSpa International
Aditya Saluja, an industry leader in luxury wellness hospitality, has been appointed as commercial director of spa and wellness for the spa management division of Minor Hotels, MSpa International.
+ More news   
 
FEATURED SUPPLIERS

MSpa Oslo series: a timeless bestseller
The MSpa Oslo series is a perennial bestseller in global markets. With innovative engineering and premium performance, this completely portable spa line-up is expertly designed to meet the needs of customers worldwide. [more...]

HPO Tech brings design-led hyperbaric systems to the spa floor
Hyperbaric oxygen therapy has moved well beyond the clinic and spa operators represent the fastest-growing market for the technology. [more...]
+ More featured suppliers  
COMPANY PROFILES
UK Spa Association

Our mission is to raise awareness of our industry within schools, colleges, society and crucially at [more...]
+ More profiles  
CATALOGUE GALLERY
+ More catalogues  

DIRECTORY
+ More directory  
DIARY

 

23-26 Aug 2026

Elevate Spa Riviera Maya Edition

The Riviera Maya Edition Kanai, Playa del Carmen, Mexico
10-12 Sep 2026

ASEAN Patio Pool Spa Expo 2026

MITEC Kuala Lumpur,Malaysia, Malaysia
+ More diary  
 


ADVERTISE . CONTACT US

Leisure Media
Tel: +44 (0)1462 431385

©Cybertrek 2026

ABOUT LEISURE MEDIA
LEISURE MEDIA MAGAZINES
LEISURE MEDIA HANDBOOKS
LEISURE MEDIA WEBSITES
LEISURE MEDIA PRODUCT SEARCH
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FREE DIGITAL SUBSCRIPTIONS