Brands & technologies · Branded fiber family

TENCEL™

Branded fiber family · understand the name behind the label.

Reviewed 2026-09-22. Evidence level: verified. Open the interactive profile.

Key figures

Owner: Lenzing AG (Austria)
Generic fibers under the brand: Lyocell and modal (check the label)
Solvent recovery (producer claim): more than 99.8% of NMMO recovered
Moisture regain (lyocell): roughly 11% at standard conditions
Lenzing acquisition of Tencel Group: 2004

Approximate values under the stated conditions.

Overview

Lenzing’s brand includes lyocell and modal products. Read the generic composition to identify which fiber is present.

Feel and behavior

Depends on the specified fiber grade, yarn and fabric construction.

Where you find it

See the linked underlying material and the producer’s product-specific documentation.

Source and geography

TENCEL is a trademark of Lenzing AG of Austria, used as an umbrella brand for more than one generic fiber, chiefly lyocell and modal, so the brand alone does not identify the fiber. Both are regenerated cellulose made from dissolving wood pulp. The lyocell side of the brand descends from the process that Courtaulds of Britain industrialized at Mobile, Alabama; Lenzing acquired the Tencel Group, including the Mobile plant and a plant at Grimsby, England, in 2004.

Advantages

Lenzing's lyocell keeps most of its strength when wet, so it tolerates laundering better than standard viscose.
Staple, filament and recycled-content lines let one documented source cover fabrics from denim to silk-like satins.
Licensing and a built-in fiber identification system give brands a route to check authenticity that most commodity cellulosics lack.
Lyocell's closed-loop solvent recovery is well documented in the technical literature, not only in marketing.

Drawbacks

The single brand name covers different fibers, so shoppers can buy modal believing it is lyocell.
Lyocell fibrillates under wet abrasion, producing white streaks and a fuzzy surface if washed roughly or finished poorly.
Branded fiber usually costs more than generic lyocell or viscose, and the premium is not always reflected in fabric construction.
Environmental comparisons on TENCEL materials are the producer's own and use Lenzing's chosen baselines.

Worth knowing

Lenzing states that TENCEL lyocell and modal carry a built-in physical identification feature that lets it confirm fiber origin in finished fabric and garments.
TENCEL hangtags are issued free to licensed customers through Lenzing's online E-Branding Service, which ties each tag to a specific licensed fabric.
The TENCEL LUXE line is a continuous lyocell filament, which puts the brand in competition with silk and cupro rather than only with cotton.

Types, grades and fabrics

Types and grades

TENCEL is a family of product lines, and the generic fiber differs between them. TENCEL Lyocell is solvent-spun staple fiber, the workhorse for denim, shirting and bedding. TENCEL Modal is a viscose-route fiber that Lenzing makes from beech wood, prized for softness in underwear and loungewear. TENCEL Lyocell Filament and the TENCEL LUXE line are continuous lyocell filaments, which Lenzing says are spun with its Eco-Filament technology as a continuous parallel yarn for silk-like wovens. Lines marked TENCEL with REFIBRA technology contain recycled cotton pulp, which Lenzing puts at 30% or more. Carbon-zero TENCEL fibers are, per Lenzing, the same lyocell sold with an added climate claim based on emission reductions and offsetting, not a different polymer.

Fabrics and products

Lyocell staple appears in denim (often blended with cotton and elastane), twills, chambray shirting, sateen and percale sheets, towels and jersey knits. Modal is spun into fine yarns for underwear, T-shirts, sleepwear and brushed knits, frequently blended with cotton or elastane. Lyocell filament is woven into fluid satins, crepes and linings that compete with silk and cupro. Peached or sanded lyocell twills exploit the fiber's controlled fibrillation for a suede-like face.

Buying and care

How to judge quality

First read the content label: it must say lyocell or modal, and a label that shows only TENCEL is incomplete. Genuine branded fabric can carry a TENCEL hangtag, which fabric mills obtain by applying for a product license through Lenzing's E-Branding Service; the tags are free to licensed customers, so a missing tag is not proof of fakery, but a tag on unlicensed goods is misuse. Lenzing states it has built a physical fiber identification technology into TENCEL lyocell and modal that can confirm origin at fabric and garment level. Good lyocell wovens feel cool, heavy and drapey; look for even color without white, fuzzy abrasion lines at seams and folds, a sign of fibrillation.

Care in detail

Treat woven TENCEL lyocell like a delicate cotton: wash at 30 to 40 C on a gentle cycle with a mild liquid detergent, turned inside out, and avoid overloading, because wet abrasion causes fibrillation and white fold marks. Modal knits wash similarly and handle warm washes but pill if tumbled hot and long. Line dry or tumble on low and remove promptly. Iron lyocell at a medium setting (the two-dot range, about 150 C) while slightly damp, on the reverse for dark colors. Store dry, since all cellulose can mildew. Chlorine bleach weakens cellulose and strips reactive dyes. Follow the garment label, which reflects the whole blend and finish.

Care at a glance

Follow the finished product’s care label. A trademark does not specify the care needs of every blend or construction.

Environmental and social footprint

Lenzing's claims center on wood from certified forests, NMMO solvent recovery above 99.8%, and lower emissions than generic cellulosics; these are producer figures tied to its own plants and life-cycle boundaries. Independent evidence mostly concerns the end of life. In a 2019 laboratory study at North Carolina State University (Zambrano and colleagues), cellulose-based knit fabrics shed more microfiber mass in accelerated laundering (about 0.2 to 4 mg per g of fabric) than polyester (0.1 to 1 mg per g), but rayon and cotton microfibers degraded in aerobic aquatic tests while polyester persisted. That supports the general case that regenerated cellulose fragments are less persistent than plastic ones, though dyes, finishes and blends with elastane or polyester complicate both biodegradation and recycling. Plant-level energy and water data should be requested for the specific site.

Tradeoffs

Producer claims apply to defined products and comparisons. This atlas does not independently certify performance, sourcing or environmental claims.

A useful question to ask: Which exact grade, composition and current producer documentation apply to this product?

Science

Manufactured cellulose family

Regenerated cellulose or a cellulose derivative, depending on the fiber.

Structure and chemistry

Chemically, TENCEL lyocell is cellulose, a linear polymer of glucose units joined by beta-1,4-glycosidic bonds, regenerated in the cellulose II crystal form. Because the polymer is dissolved directly and drawn in an air gap before coagulation, the chains are highly oriented and crystalline, and the fiber is built from long microfibrils lying parallel to its axis. That fibrillar architecture explains both its high wet strength and its tendency to fibrillate: wet abrasion can split fine fibrils from the surface, producing the peach-skin effect that finishers either exploit or suppress. TENCEL modal, by contrast, is made by a modified viscose route and has a different internal structure.

From source to yarn

Lenzing describes lyocell production as direct dissolution: wood pulp is mixed with an aqueous solution of N-methylmorpholine N-oxide (NMMO), water is evaporated until the cellulose dissolves into a viscous dope, and the filtered dope is extruded through spinnerets across an air gap into a dilute NMMO bath where the cellulose coagulates (dry-jet wet spinning). The filaments are washed, finished, dried and cut to staple or kept as filament. Lenzing states that more than 99.8% of the solvent is recovered by evaporation and distillation and returned to the loop. No derivative such as cellulose xanthate is formed, which distinguishes this route from viscose.

Performance in use

Lyocell's regain is roughly 11% at standard conditions, a little lower than viscose because of its higher crystallinity. Published comparisons report lyocell keeping most of its tenacity when wet (in one study roughly 32 cN/tex dry and 29 wet) while viscose loses close to half. Like all cellulose it chars rather than melts, dyes readily with reactive, direct and vat dyes through its hydroxyl groups, and is vulnerable to mildew if stored damp. Fibrillation during wet processing and laundering is the main handling issue; cross-linked grades exist to reduce it. Comfort and sustainability statements on the TENCEL site are the producer's own.

How it is identified

Burn tests are indicative only and should be done with care: lyocell burns like other cellulose, with a paper-like smell and soft grey ash. Under the microscope it shows a smooth, round to oval cross-section without the serrated outline of standard viscose, and wet abrasion may reveal fibrils. FTIR confirms cellulose but cannot establish the brand. Retail confusion is common: TENCEL can mean lyocell or modal, so the generic name on the label is what identifies the fiber.

History

Timeline

1992Courtaulds petitioned the FTC for a new generic fiber name so that the fiber need not be labeled rayon. [1]
1996The FTC approved lyocell as a name for fabric content labeling. [1]
2004Lenzing acquired the Tencel Group, including plants at Mobile, Alabama, and Grimsby, England. [2]
2017Lenzing introduced TENCEL lyocell with REFIBRA technology, containing recycled cotton pulp. [3]

The brand’s history follows the commercial development and branding of regenerated cellulose. Its portfolio spans more than one generic fiber type.

The deeper record

Solvent spinning of cellulose in amine oxides was developed as an alternative to the viscose route, and Courtaulds brought it to commercial scale under the Tencel name at Mobile, Alabama, reaching full production in the early 1990s. Courtaulds petitioned the FTC in 1992 for a new generic name, received a temporary designation so the fiber need not be called rayon, and saw lyocell formally adopted in 1996. Lenzing, a former competitor, acquired the Tencel Group in 2004, combining the brand with its own lyocell and modal output. The brand later became Lenzing's main textile umbrella for specialty cellulosics.

Labeling and law

TENCEL is a trademark, not a generic fiber name. In the United States the Textile Fiber Products Identification Act (15 U.S.C. 70 et seq.) and the FTC rules at 16 CFR Part 303 require the generic name; the FTC added lyocell in 1996 as a recognized subclass of rayon, and a trademark may appear only alongside the generic name. In the EU, Regulation (EU) No 1007/2011 requires the listed fiber name (lyocell or modal). Any certification a product carries should be checked on the certificate itself rather than inferred from the brand.

This describes what rules and standards cover. It is not legal advice; jurisdiction, product form and current rule text control.

Frequently asked

Is TENCEL the same as lyocell?

Not exactly. TENCEL is Lenzing's trademark and covers both lyocell and modal, plus filament and recycled-content lines. Lyocell is the generic fiber name. The fiber content label, which must list the generic name, tells you which one is in the garment.

Is TENCEL a natural fiber?

No. It is a manufactured regenerated cellulose: wood pulp is dissolved and spun into new fiber. The raw material is plant-based, but the fiber does not exist in nature, and US and EU labeling law treat it as a manufactured fiber with a regulated generic name.

Why does my TENCEL shirt have white streaks?

That is usually fibrillation: wet abrasion splits fine fibrils from the lyocell surface, which scatter light and look pale, especially on dark dyes. Washing inside out, on a gentle cycle with a smaller load, and avoiding hard tumble drying reduces it.

Is TENCEL Modal better than generic modal?

The chemistry is the same fiber class. What the brand adds is Lenzing's sourcing documentation, licensing and fiber identification. Softness and durability depend more on yarn count, knit structure and finishing than on the brand name itself.

Sources

Cite this page

Chaos. (2026). TENCEL™. In Fibers of Earth: An independent textile atlas. https://www.hendrickresearch.com/fibers/materials/tencel/