Which material is the most eco-friendly?

There is no single material that is always the most eco-friendly, because environmental impact depends on how a fiber is grown or made, processed, used, and ultimately discarded. For clothing, using a garment you already own or choosing a durable secondhand piece is often a practical way to avoid the impact of producing something new.

If you are buying new, consider the material alongside the garment’s quality and how often you expect to wear it. A fabric with a promising environmental profile may offer less value if the garment wears out quickly or does not suit your needs.

Hemp and linen, which comes from flax, are often considered lower-impact options because they can require relatively little irrigation and may need fewer agricultural inputs than conventional cotton, depending on where and how they are grown. Both can work well for breathable everyday clothing, though their texture and care needs vary by garment.

Organic cotton avoids synthetic pesticides and fertilizers used in conventional cotton production, but it can still require substantial water, particularly in dry growing regions. Recycled cotton can make use of existing fiber, although it may be blended with other fibers to achieve the desired strength and feel.

Polyester is durable and often useful for activewear, but it is generally made from fossil fuels and can shed tiny plastic fibers during washing and wear. Recycled polyester uses existing plastic as a raw material, yet garments made from it can still shed microplastics and are not necessarily easy to recycle again.

Cotton and polyester have different environmental trade-offs, so neither is always worse in every situation. Cotton’s cultivation can demand considerable water and other inputs, while polyester raises concerns about fossil resources, plastic pollution, and persistence after disposal.

Start with the clothes you already have: wear them often, repair small damage, and wash them only when needed according to their care instructions. When you need something different, shop secondhand or choose a well-made garment in a material that suits your climate, activities, and preferred level of care.

For a broader introduction to fiber choices, our Eco-Friendly Fabrics for Clothing eBook brings the topic into your sustainable fashion planning. Our team recommends comparing the whole garment, not just its fiber label, so you can choose something you will want to keep wearing.