Biotherm

Biotherm is a French skincare brand owned by L'Oréal and associated with the use of thermal plankton-inspired ingredients in facial, body, sun-care, and men's grooming products. Its origins lie in research conducted in the thermal waters of Molitg-les-Bains in the Pyrenees region of southern France. During the 1940s and 1950s, French physician Jos Jullien investigated a distinctive substance found on the surface of the springs. Working with Jeanine Marissal, he explored how the substance, identified as thermal plankton, could be incorporated into cosmetic preparations. The rights connected with this work were obtained in 1952, and the brand was established under the leadership of Adrien Barthélémy, who owned the Molitg-les-Bains springs. The name Biotherm combines references to biology and thermal waters: “bio” reflects the biological basis of the brand's ingredient concept, while “therm” refers to the thermal origin of the plankton associated with the spring waters. The brand's product philosophy has consistently linked cosmetic formulation with aquatic and biological research, although its commercial identity has centered more on skincare performance and sensorial use than on medical treatment. Biotherm launched with three products in 1952: La Crème Triple-Usage, Biotherm Cure, and Biomains. Biomains, a moisturizing hand-care product, became one of the brand's enduring offerings. During the 1960s, Biotherm expanded beyond its initial formulas into targeted skincare, including sun protection, body care, and products marketed for specific cosmetic concerns. Its 1968 introduction of Bio-Buste Suractive, described as a breast-firming cream, illustrates the brand's early emphasis on specialized body-care categories. L'Oréal acquired Biotherm in 1970. The acquisition placed the brand within one of the world's largest beauty groups and supported its development as an international premium skincare label. Over time, Biotherm became associated with facial moisturizers, body treatments, hand care, sun products, and men's skincare. The brand's Life Plankton concept became a central part of its contemporary communication and product architecture, particularly in hydration-focused lines such as Aquasource and related treatments. Biotherm has also used prominent ambassadors and executives to reinforce its international positioning. Leighton Meester was appointed global spokesperson in 2014. David Fridlevski became brand president in 2016, followed by Gregory Benoit in 2022. In 2024, American actor David Corenswet became an ambassador for the men's skincare line. The brand therefore operates as a global premium skincare business within L'Oréal Luxe, combining a French thermal-water origin story with modern product development and international marketing.

Biotherm emerged from French research into thermal spring waters at Molitg-les-Bains in the Pyrenees. In the 1940s and early 1950s, Dr. Jos Jullien of Joyeuse in Ardèche studied a substance present on the surface of the springs. The material was associated with thermal plankton, and Jullien worked with Jeanine Marissal on ways to incorporate it into cosmetic formulas. Adrien Barthélémy, owner of the springs, led the formation of Biotherm after the relevant intellectual-property rights were acquired in 1952. The brand launched three products in 1952: La Crème Triple-Usage, Biotherm Cure, and Biomains. The latter was a hand moisturizer and became the longest-lasting example of the original product range. Biotherm's name expressed its founding concept: biological research combined with thermal-water heritage. Thermal plankton became a defining ingredient story and later developed into the brand's broader Life Plankton identity. During the 1960s, Biotherm widened its range through products aimed at particular skincare and body-care needs. It introduced an early sun cream and a slimming cream, followed in 1968 by Bio-Buste Suractive, marketed as a breast-firming product. These launches established a pattern of specialized facial, body, and sun-care development rather than a narrow focus on one type of moisturizer. L'Oréal acquired Biotherm in 1970. Under L'Oréal ownership, the brand became part of the group's international premium beauty portfolio and expanded its presence beyond France. Its range came to include facial hydration, body care, hand care, sun protection, and men's skincare. The brand's contemporary positioning continues to draw on aquatic science, thermal origins, and Life Plankton while presenting the products as modern premium cosmetics. Biotherm's later history also includes a stronger emphasis on global brand communication. Leighton Meester became global spokesperson in 2014. David Fridlevski became president in 2016, and Gregory Benoit succeeded him in 2022. In 2024, David Corenswet was linked to the men's skincare business as a brand ambassador. The reference material also identifies Barbara Palvin as the face of a 2026 Aquasource+ Electrolyte Dewy Gel campaign. Biotherm remains an active L'Oréal-owned skincare brand, although detailed current corporate and geographic operating information is not specified in the supplied sources.

1. 2024David Corenswet joins men's skincare communication

   David Corenswet became an ambassador for Biotherm's men's skincare line.

   Source
2. 2022Gregory Benoit becomes brand president

   Gregory Benoit was appointed president of Biotherm within L'Oréal Luxe.

   Source
3. 2016David Fridlevski becomes brand president

   David Fridlevski took over as president of Biotherm.

   Source
4. 2014Leighton Meester named global spokesperson

   The actor was appointed as a global spokesperson for Biotherm.

   Source
5. 1970L'Oréal acquires Biotherm

   Biotherm became part of L'Oréal, supporting its development as an international premium skincare brand.

   Source
6. 1968Bio-Buste Suractive introduced

   Biotherm launched Bio-Buste Suractive, its first product marketed as a breast-firming cream.

   Source
7. 1960Expansion into targeted skincare

   During the decade, Biotherm developed specialized products including an early sun cream and a slimming cream.

   Source
8. 1952Biotherm is established and launches its first products

   Following the acquisition of relevant intellectual-property rights, Biotherm was formed under Adrien Barthélémy and introduced La Crème Triple-Usage, Biotherm Cure, and Biomains.

   Source
9. 1940Thermal-plankton research begins

   Dr. Jos Jullien investigated a distinctive substance found in the thermal waters of Molitg-les-Bains in southern France and explored its cosmetic potential with Jeanine Marissal.

   Source

Premium French skincare combining aquatic and biological ingredient heritage with modern cosmetic formulation.

• BiomainsHand care1952

  Biomains is a moisturizing hand-care cream from Biotherm's original 1952 launch assortment. It is notable as one of the early products that connected the brand's thermal-plankton concept with an everyday personal-care use and is identified in the reference material as still being marketed.

• Life PlanktonSkincare ingredient and product platform

  Life Plankton is Biotherm's signature ingredient concept and a central part of its modern brand identity. It extends the company's original association with thermal plankton into contemporary facial and body skincare communication, particularly products focused on hydration and skin comfort.

• AquasourceFacial hydration

  Aquasource is a Biotherm facial-skincare line centered on hydration. It represents the brand's aquatic positioning and its use of Life Plankton-related storytelling in products designed for daily moisturizing and skin-refreshing routines.

• Aquasource+ Electrolyte Dewy GelFacial moisturizer2026

  Aquasource+ Electrolyte Dewy Gel is identified in the supplied reference material as a product associated with a 2026 campaign featuring Barbara Palvin. The available material does not provide further formulation, market, or launch details.

• La Crème Triple-UsageFacial and general skincare1952

  La Crème Triple-Usage was one of Biotherm's three inaugural products in 1952. The supplied reference identifies it as part of the original launch but does not specify its later availability or detailed product claims.

• Biotherm CureSkincare treatment1952

  Biotherm Cure was included in the brand's original 1952 product launch. The available reference does not provide enough detail to describe its formulation, intended use, or current status.

• 2026Aquasource+ Electrolyte Dewy Gel campaign

  Barbara Palvin was identified as the face of a new campaign for Biotherm Aquasource+ Electrolyte Dewy Gel.

  Outcome. Campaign identified in the supplied reference material; market-level results are not available.

  Source
• 2024David Corenswet men's skincare ambassadorship

  International

  American actor David Corenswet became an ambassador connected with Biotherm's men's skincare line.

  Outcome. Ambassador appointment announced; detailed campaign results are not specified.

  Source
• 2014Leighton Meester global spokesperson appointment

  International

  Biotherm appointed Leighton Meester as a global spokesperson, reinforcing the brand's international premium-skincare image.

  Outcome. Global spokesperson relationship announced; further campaign performance is not specified.

  Source

• 1970L'Oréal acquisition of BiothermM&A

  Biotherm had developed from a French thermal-plankton cosmetics venture into a skincare brand with multiple targeted product categories.

  What changed. L'Oréal acquired Biotherm.

  Aftermath. The brand became part of L'Oréal's beauty portfolio and later operated within the L'Oréal Luxe organization.

  Source
• 1968Introduction of Bio-Buste SuractiveProduct launch

  Biotherm was expanding into specialized skincare and body-care propositions during the 1960s.

  What changed. The brand introduced Bio-Buste Suractive, marketed as a breast-firming cream.

  Aftermath. The launch broadened Biotherm's early portfolio of targeted cosmetic treatments.

  Source
• 1952Launch of the founding product rangeProduct launch

  Research into thermal plankton in the Molitg-les-Bains springs led to efforts to create cosmetic formulas using the ingredient concept.

  What changed. Biotherm launched La Crème Triple-Usage, Biotherm Cure, and Biomains.

  Aftermath. The launch established the brand's thermal-water and biological positioning, with Biomains becoming a continuing product reference.

  Source

• 2026Barbara Palvin selected for Aquasource+ Electrolyte Dewy Gel campaign

  Hungarian model Barbara Palvin was identified in the reference material as the face of a new Biotherm Aquasource+ Electrolyte Dewy Gel campaign.

  CampaignProduct launch
  Source
• 2024David Corenswet becomes ambassador for Biotherm men's skincare

  American actor David Corenswet was named an ambassador for Biotherm's men's skincare line.

  Campaign
  Source
• 2022Gregory Benoit appointed Biotherm president

  Gregory Benoit was appointed president of Biotherm and was described in the reference material as the youngest person to hold that position within L'Oréal Luxe at the time.

  Leadership change
  Source
• 2016David Fridlevski becomes Biotherm president

  David Fridlevski took leadership of the Biotherm brand.

  Leadership change
  Source
• 2014Leighton Meester appointed global spokesperson for Biotherm

  Biotherm selected American actor Leighton Meester as a global spokesperson for the skincare brand.

  Campaign
  Source
• 1970L'Oréal acquires Biotherm

  Biotherm became part of the L'Oréal group, which subsequently developed the brand as an international premium skincare business.

  M&A
  Source
• Biotherm expands its Water Lovers sustainability platform

  Biotherm has used Water Lovers communications and related initiatives to promote ocean protection, packaging improvements, and more responsible sun-care practices.

  Campaign
  Source

1. Biotherm
2. L'Oréal acquires Biotherm
3. Biotherm expands its Water Lovers sustainability platform