Seamer

What Seamer does

Seamer is a privately-held French family SME (PME locale et familiale) founded in 1994 by Christine Bodeau and headquartered in Le Relecq-Kerhuon, Brittany — within meters of the sea and at the heart of Europe's largest seaweed fields. The company designs and manufactures marine-based cosmetic products using proprietary biotechnological processes that transform algae (brown, red, blue) and marine actives such as carrageenans, laminaria extracts, and marine pearls into concentrated cosmetic ingredients. Its catalog spans three lines: Retail (premium serums), Hospitality (hotel guest amenities and themed rituals such as Rituel perfect night and Rituel Hipster), and Professional Care (56+ treatment products for thalassotherapy centers, spas, and wellness operators).

Seamer operates a B2B, project-based, consultative sales model, engaging enterprise clients — thalassotherapy centers, hotels, spas, and maritime companies — to co-develop customized cosmetic ranges from formulation through packaging. Revenue is generated through professional product sales with quote-based, undisclosed pricing; products reach end consumers only via partner establishments (treatments, room amenities, and retail resale). Notable flagship partnerships include the Thalassa Sea & Skin line developed for Accor Group (2019), marine eye patches for Thalazur (2019), and a Travel Set extension launched in November 2019. The company is positioned as a leader in the French thalassotherapy market and is recognized for 30+ years of marine-cosmetic expertise, with leadership held for over two decades by director Philippe Saint-Léger alongside founder Christine Bodeau.

The business is small and self-funded: share capital of €10,000, no disclosed external funding, and 1-10 employees. Distribution is exclusively direct B2B sales with a regional (predominantly France/Europe) operating footprint, no disclosed app or API layer, and no digital or AI-native components. Marketing relies on a professional website (sea-mer.fr) and a LinkedIn presence rather than consumer-facing advertising. The company's competitive position rests on long-tenured formulation expertise, geographic proximity to Breton marine biomass, and embedded enterprise relationships with French thalassotherapy and hospitality operators.

Name

Seamer

Legal name

SEAMER

Website

https://sea-mer.fr

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

1–10 employees

Short description

Seamer is a privately-held French family SME that designs and manufactures marine-based cosmetic products from algae and marine actives via proprietary biotechnology, selling B2B to thalassotherapy centers, hotels, spas, and maritime companies in France.

Ownership category

akta.pro rank

Headquarters

HQ city

Le Relecq-kerhuon

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Professional Product Sales: B2B sales of marine cosmetics to thalassotherapy centers, hotels, spas, and maritime companies for use in professional treatments, room amenities (produits d'accueil), and retail resale

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Seamer designs, develops, and manufactures marine-based cosmetic products derived from algae and marine actives. The company formulates professional skincare, hospitality amenities, and retail lines sold primarily to thalassotherapy centers, hotels, spas, and maritime brands. Seamer also produces custom-branded product lines for hospitality operators and resort groups.

Product overview

Seamer is a marine cosmetics company based in Brittany, France, specializing in the design and manufacture of skincare products derived from marine actives and algae. The company offers a portfolio of three product lines: (1) Retail products for direct consumer sale, featuring premium marine serums like Sérum tenseur visage; (2) Hospitality/amenities products including hotel room rituals like Rituel pour les hommes, Rituel perfect night, Rituel after shopping, and marine serums such as Sérum perles précieuses; and (3) Professional Care products for thalassotherapy centers, spas, and wellness facilities, encompassing 56+ professional-grade treatments including facial masks (Masque nutri-confort, Masque purifiant, Masque révélateur d'éclat), body treatments (Cire sérénité intense, Enveloppement essentiel detox, Pâte d'algues thermosudation), massage products (Crème de massage, Huile de massage intense algues et plantes), and specialized care (Gel jambes légères, Crème défense anti-âge jour). The products utilize marine biotechnology to transform algae and marine actives into innovative cosmetic formulas. The portfolio is unified by marine origin ingredients (brown, red, and blue algae, seaweed extracts, carrageenans) delivered in diverse textures including melting balms, foaming gels, waxes, and masks. Notable branded collaborations include Thalassa Sea & Skin (developed for Accor Group) and Thalazur marine patches.

Differentiator

Problem solved

Functional benefit

Brands

• Thalassa Sea & Skin: Marine cosmetic range developed for Accor Group, combining thalassotherapy expertise with marine biotechnologies for innovative, sensory beauty experiences.

Products and services

• Gamme Thalassa Sea & Skin
• Travel Set Thalassa Sea & Skin
• Patch marin pour les yeux Thalazur
• Professional Care product line
• Hospitality product line
• Retail product line

Quantifiable outcome

• Efficacy tested products with measurable results including centimetric loss, firmness gains, wrinkle reduction, long-lasting hydration, and brown spot intensity reduction

Named customers5 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Two partnerships are on record, tiered core.

• Accor (Thalassa Sea & Skin)coreOEM/ Whitelabel/ Licensing Partner · 1 July 2019Seamer developed the Thalassa Sea & Skin marine cosmetic range for Accor, the global hospitality leader in thalassotherapy. This complete product line incorporates the benefits of the sea and marine biotechnologies, offering innovative, sensory-driven experiences for positive beauty. The partnership leverages Seamer's expertise in marine actives combined with Accor's global hospitality presence.
• ThalazurcoreStrategic or Co-development PartnerSeamer developed marine eye patches for Thalazur, specifically formulated for hotel guest amenities. These 100% marine-origin patches are made from carrageenans (natural polymers from red algae cell walls) and provide an ultra-fresh, filmogenic texture that contours perfectly to the eye area, boosting gaze radiance in a single gesture.

Scale indicators2 records

Recent moves5 records

Expansion highlights3 records

Emerging players

• Osea Malibu: Osea is a US-based clean beauty brand built around seaweed and marine actives for spa and retail channels. Comparable marine ingredient focus and natural positioning, though with a US consumer-direct emphasis rather than European B2B.

Broad incumbents

• Biotherm: Biotherm is a major marine biotech skincare brand owned by L'Oréal, using aquatic and algae-derived ingredients across mass-market and premium lines. Comparable marine active story but vastly larger scale and broader distribution than Seamer.
• La Mer: La Mer is a luxury marine-derived skincare brand owned by Estée Lauder, using a fermented sea kelp Miracle Broth in premium face and body care. Comparable marine biotech origin and luxury positioning, but operates at a much larger global scale.
• Elemis: Elemis is a British professional skincare brand sold through spas, hotels, and retail worldwide, including marine-inspired product lines. Comparable to Seamer in professional spa distribution and hotel amenity partnerships, though at significantly larger scale.

Direct peers

• Thalgo: Thalgo is a leading French marine cosmetics brand specializing in thalassotherapy and marine-derived skincare for spas, hotels, and retailers. It is the closest direct competitor to Seamer in marine biotech cosmetics for professional wellness clients.
• Algotherm: Algotherm is a French marine-based skincare brand offering algae-derived cosmetic products through spas and retail. Comparable to Seamer in marine active sourcing and professional distribution model.
• Comfort Zone: Comfort Zone (Davines group) is an Italian professional skincare brand sold primarily through spas and wellness centers, with natural and marine-inspired formulations. Comparable to Seamer in the professional spa/wellness B2B channel.
• Phytomer: Phytomer is a French marine cosmetics company producing skincare from sea-derived ingredients for spas, thalassotherapy centers, and retail. Direct overlap with Seamer in product category, marine active positioning, and B2B spa/hotel customer base.
• Yon-Ka Paris: Yon-Ka is a French professional skincare brand sold primarily through spas and beauty institutes, with plant- and marine-derived formulations. Comparable to Seamer's professional care channel and similar ingredient philosophy.
• Anne Sémonin: Anne Sémonin is a French luxury skincare brand offering marine and botanical formulations sold through premium spas and hotels. Comparable to Seamer in the high-end hospitality amenity and professional spa space.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/seamer

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Seamer