# Hormone-Disrupting Fabrics: What They Are and How to Lower the Burden > Hormone-disrupting fabrics carry chemistries linked to the endocrine system — PFAS, phthalates, formaldehyde, and microplastics. Here's how a clean plant fiber reduces that burden. *Published 2026-08-28 · tags: hormone health, natural fiber* --- Most people pick an outfit by how it looks and feels, not by its chemistry. But the fabric pressed against your skin all day can carry a surprising load of synthetic compounds, some of them linked to hormone disruption. **Hormone-disrupting fabrics** are textiles built from, or finished with, chemicals that can interfere with the body's endocrine system — and because clothing sits against warm, often damp skin for hours, it is worth knowing what is in yours. The reassuring part: a clean, plant-based fiber removes most of the usual suspects. Here is what actually makes a fabric hormone-disrupting, which chemistries to watch for, and how Imperium's hemp-lyocell fiber is built to reduce that burden. ## What Makes a Fabric Hormone-Disrupting Not every fabric carries the same risk. The concern with hormone-disrupting fabrics comes down to specific chemicals — most of them added during manufacturing or inherent to plastic fibers. ### The chemicals hiding in synthetic textiles Endocrine-disrupting chemicals, or EDCs, are substances that can mimic or block the body's hormones. In textiles the common ones read like a finishing-room inventory: PFAS "forever chemicals" in water- and stain-resistant coatings, phthalates in soft plastic prints and coatings, formaldehyde-based resins in wrinkle-free and anti-shrink finishes, and certain azo dyes and heavy metals. The [NIEHS](https://www.niehs.nih.gov/health/topics/agents/endocrine) tracks endocrine disruptors as an active research area, and [PFAS](https://www.epa.gov/pfas) in particular have drawn heavy regulatory attention. A polyester base can also carry residual catalysts and additives from its plastic chemistry. Stack them together and you have the profile of a hormone-disrupting fabric. ### Why skin contact matters Skin is not a perfect barrier, and the conditions of everyday wear work against it. Warm skin, sweat, and friction — exactly what a workout or a hot day produces — increase the contact and transfer of chemicals from fabric to body. That is why hormone-disrupting fabrics are most concerning in the pieces worn tight and long: leggings, sports bras, base layers, underwear, and bedding. It is the same reason [static from synthetic clothing](/learn/oxidative-stress-from-static-generated-by-polyester-nylon-clothing) is worth taking seriously — the layer you sweat in matters far more than the layer you show. ## How Imperium Reduces the Hormone-Disrupting Burden You cannot always control what a garment was finished with, but you can choose a fiber built to avoid the worst of it. Imperium's approach to lowering the hormone-disrupting burden starts with the raw material. ### A plant fiber made without the chemistry Imperium is a hemp-lyocell fiber — plant cellulose, not petroleum. Because it is naturally water-friendly and breathable, it needs no PFAS coating to perform, and because it is graded to the [HFGA US Hemp Textile Standard](/standards), its restricted-substance list keeps PFAS, off-label pesticides, chlorinated bleaching agents, formaldehyde, and heavy metals out of the delivered fiber — several of the exact chemistries that make a fabric hormone-disrupting. That restricted-substance list is part of the standard's [conformity process](/certifications/hfga-us-textile-standard), not just a line on a hangtag. ### No microplastics, no chemical finishes The other half of the story is what Imperium does not shed. Plastic fibers release [microplastics](https://oceanservice.noaa.gov/facts/microplastics.html) that can ferry additive chemistry into wash water and, a growing body of research suggests, into the body. A plant-based [hemp-lyocell blend](/learn/ultimate-guide-to-hemp-lyocell-blends-uses-and-benefits) sheds none, and it does not lean on the finishes synthetics need to feel wearable — softeners, anti-wrinkle resins, stain coatings. Fewer finishes and no plastic mean a lower chemical burden against your skin. For the deeper science, see our look at [synthetic fabrics and hormones](/learn/synthetic-fabrics-hormones-natural-fiber-wellness). ## Building a Lower-Burden Wardrobe You do not have to overhaul everything at once. Start with the garments where hormone-disrupting fabrics matter most — the ones against your skin the longest. ### Activewear and next-to-skin layers Leggings, sports bras, and base layers sit on warm, sweaty skin for hours, which makes them the highest-value swap. Imperium performs like technical activewear — wicking, breathable, four-way stretch — without the PFAS finishes or microplastic shedding of a synthetic, which is why it doubles as a [PFAS-free, pesticide-free performance fabric](/learn/pfas-free-pesticide-free-performance-fabric) and a genuine [polyester alternative for sportswear](/learn/polyester-alternatives-for-sportswear). See the range on our [athletic wear](/products/athletic-wear) page. ### Home textiles and everyday basics You spend roughly a third of your life in bed, so sheeting is the other easy win. Imperium makes breathable, durable [home goods](/products/home-goods) that regulate temperature and carry none of the plastic finishes of synthetic bedding. Across tees, underwear, and everyday basics, choosing a clean plant fiber steadily lowers the presence of hormone-disrupting fabrics in daily contact with your body — without asking you to give up softness or performance. Hormone-disrupting fabrics are a real, researched concern, but an avoidable one. Choosing a plant-based fiber made without the worst chemistry, and graded to a documented standard, is a straightforward way to lower the burden. Read [our story](/our-story) to see how the fiber is grown, or explore more from the [Journal](/learn). --- Source: https://imperiumfiber.com/learn/hormone-disrupting-fabrics HTML version: https://imperiumfiber.com/learn/hormone-disrupting-fabrics