The power of seaweed in a fiber.

In response to the increasingly harmful impacts of our environment, and after years of intensive research, smartfiber AG has succeeded in developing SeaCell™, a fiber made from renewable resources. The seaweed is washed, dried, carefully ground and incorporated into the cellulose fiber, from which textiles for a wide variety of applications are made.

The fiber is produced exclusively from sustainable raw materials – wood and seaweed – using methods that save both energy and resources. It is completely biodegradable.

Harvesting of the seaweed is a gentle, selective and, most importantly, sustainable process. It removes only the part of the seaweed that is able to regenerate. The seaweed is entirely untreated and all its ecological value is retained.

Active ingredients from sea with a positive effect on the skin

The unique properties of seaweed help to protect our skin against the harmful environmental influences which we are exposed to in our daily lives. The seaweed is pure and rich in essential substances such as vitamins, trace elements, amino acids and minerals.

The substances found in seaweed help to activate cell regeneration, which in turn can help to relieve skin diseases, reduce inflammation and soothe itchiness. Its high level of antioxidants protects the skin against harmful free radicals, which damage our skin cells.

The natural moisture level of the skin enables an active exchange of those beneficial substances between the fiber and the skin, providing a noticeable sense of wellbeing.


SeaCell™ LT is produced using the Lyocell process, an innovative and eco-friendly production method. Production takes place in a closed loop with no chemicals released as waste. This meets the expectations of our industry both today and in the future.

It is one reason why the European Union awarded the procedure with the 2000 European Environmental Award in the category “technology for sustainable development”.

For more information on SeaCell™ LT, please refer to the product brochure and data sheets. These are available for download here.

SeaCell™MT is manufactured using modal technology, which is an innovative and environmentally friendly production method that generates energy and recovers the component parts of the raw materials.

For more information on SeaCell™ MT, please refer to the product brochure and the data sheets. These are available for download here.


The guaranteed effects of SeaCell™

Numerous tests by various renowned institutes have confirmed the quality and effectiveness of SeaCell™.

Thanks to its ecological and sustainable harvesting together with the gentle process, SeaCell™ received the EU Ecolabel and meets the requirements according to OEKO-Tex Standard 100 certified for baby products.

Using the well-known ABEL antioxidant test, the University of Jena has confirmed the ability of the seaweed in SeaCell™ to catch free radicals effectively.

Finished textiles and samples can be certified free of charge by smartfiber AG.

Confidence in textiles – tested for harmful substances according to OEKO-TEX® Standard 100 for our SeaCellTM fiber.


Oeko-Tex SeaCell MT 2022

Vincotte certification: Our SeaCellTM LT and SeaCellTM MT fibres are biodegradable and compostable.


The United States Department of Agriculture’s (USDA’s) BioPreferred programme tested our SeaCellTM fibres on 30.07.2017 and confirmed that they are 100% organic.


BioPreferred Official Letter

Test report TITK (Thuringian Institute for Textile and Plastics Research e.V.) for the biodegradation of our fibres:


Test report

smartfiber AG has been granted the right by the EU to use its ECO label for SeaCell™ fibres as proof of the product’s special environmentally friendly properties.

Certificate SeaCell™ LT and SeaCell™ MT

The Protein Analysis Center of the Bingen University of Applied Sciences has determined its amino acid content.

Thorverk: TÚN – Algae Certificate


Vottunarstofan Tún ehf.

Quality Assurance International: Algae in SeaCellTM is 100% biologically pure

Certificate SeaCellTM LT and SeaCellTM MT

In an epicutaneous test by the University of Jena, it was certified that the SeaCell™ fibre does not cause allergic and irritative reactions on sensitive skin. This was also confirmed in a skin tolerance test conducted by the ITV Denkendorf Institute. The free radical scavenging properties of the SeaCell™ fibre and textiles were tested according to ABEL® (Analysis By Emitted Light) by the University of Jena.


Modal studyreport_ROS-RNS_smartfiber_no1507067-1507068-1207069_v20150723

SeaCell™ has no cytotoxic effect, i.e. it does not damage cells, and is therefore well tolerated – as proven by the CYTOX test laboratory.

Certificate SeaCell™ LT

New Fibers Textile Corporation, Taiwan: Experiment Elimination of free radicals in SeaCellTM LT

Experiment SeaCell™ LT

Forest Stewardship Council® (FSC®) proves that wood is derived from responsibly managed forests.

Proves that wood is derived from sustainably managed sources.

SeaCellTM has been selected by ISPO TEXTRENDS as one of the top innovations for summer 2019.

Free Radical Removal Test / Wash Test for SeaCell™.

Washtest SeaCell™

Removal of free radicals

SeaCellTM has been selected by ISPO TEXTRENDS 2017 in Munich as one of the top innovations for Fall/Winter 2018/19.

More tests & certificates

Pörungaverksmidjan HF




Certified organic land, fields and plants


Green Leaf – eco

“Green Leaf” of the “Green Directory” of the Heimtextil trade fair for production with environmentally friendly materials made from recycled, bio-certified, renewable raw materials with low environmental impact in the life cycle or from environmentally optimised synthetic fibres.

Green Leaf

Ingredients algae powder

Ingredients algae powder