Is Modal / Beechwood Modal Vegan? Material Facts & Alternatives

Modal is a recognized generic fiber name in both the EU and the US, so it appears on garment labels under its own name rather than hidden behind a code. In the EU, textile labeling regulation lists "modal" as a distinct fiber category separate from viscose. In the US, the Federal Trade Commission treats modal as a type of rayon, so labels may read "modal," "rayon (modal)," or simply "rayon."

Branded versions add trade names: "Lenzing Modal," "TENCEL Modal," or "MicroModal" all refer to Lenzing's fibers, with MicroModal being a finer variant used in premium underwear.

The fiber content line matters more than the marketing name. Modal is very frequently blended — typical labels read "50% cotton, 50% modal" or "92% modal, 8% elastane." The Modal component is always vegan; what deserves attention is the rest of the blend, since some knitwear combines modal with wool, cashmere, or silk. Checking the full percentage breakdown is the reliable way to confirm a garment is entirely animal-free.

Within the cellulosic family, Modal sits between standard viscose and lyocell. It is softer and considerably more durable than ordinary viscose, particularly when wet, but it is made with the same core chemistry, including carbon disulphide — a chemical with well-documented occupational health concerns when not properly contained. Lyocell (TENCEL) uses a different, cleaner solvent process with a nearly closed loop, which is why it is generally considered the more environmentally responsible choice of the two.

Against animal fibers, Modal is a common functional substitute for silk in underwear, nightwear, and draped tops: it has a smooth hand, natural sheen, and good breathability. Blended with synthetics or cotton, it also replaces fine merino wool in lightweight base layers, though it does not match wool's insulation when wet.

Compared with cotton, Modal is softer, more absorbent, and less prone to shrinking, but it is also more delicate at high washing temperatures and usually more expensive. For vegans, all of these plant and synthetic options are acceptable; the choice comes down to performance, price, and environmental priorities rather than animal-welfare concerns.

Modal is most concentrated in the underwear and loungewear market. Premium underwear brands rely heavily on modal and MicroModal because the fiber stays soft against skin after repeated washing. It is equally common in nightwear, T-shirts, camisoles, and lightweight jersey dresses.

Beyond clothing, modal appears in bed linens, towels, and bathrobes, often blended with cotton to add softness and absorbency. Sportswear brands use modal blends in casual and yoga lines, though high-performance athletic wear usually favors polyester or nylon for moisture management.

From a vegan standpoint, the fiber itself never poses a problem — the practical points to check are elsewhere in the finished product. Knitwear labeled "modal blend" occasionally contains a percentage of wool or cashmere. Garment trims can also be non-vegan: leather patches on waistbands, mother-of-pearl buttons, or silk linings. As with any textile purchase, the complete fiber content label and trim details determine whether the finished garment is vegan, not the presence of modal itself.