Your Non-Toxic Fabrics Ranked: The Best Sustainable Alternatives to Plastic-Based Textiles

The clothes we wear come into direct contact with our skin every day, yet many of us rarely consider what they're actually made from. As awareness grows around microplastic pollution, fast fashion, and the environmental impact of textiles, consumers are increasingly seeking fabrics that are healthier for both people and the planet.

Today, over 60% of global clothing is made from synthetic fibres derived from fossil fuels. Fabrics such as polyester, nylon, acrylic and elastane are essentially plastics. Every wash can release tiny microplastic fibres into waterways, many of which eventually reach our oceans, wildlife, food chain and even drinking water. While scientists continue to study the long-term health implications, reducing our reliance on synthetic materials is one practical step we can all take towards a more carbon-conscious lifestyle.

The good news is that there are many high-performing plant-based and responsibly manufactured alternatives available today. Natural fibres such as organic cotton, hemp and linen, alongside innovative cellulose fibres like TENCEL™ Lyocell and ECOVERO™, offer breathable, durable and comfortable clothing without relying on fossil-fuel plastics.

When shopping for sustainable clothing, it's also worth looking beyond the fabric itself. Independent certifications such as GOTS (Global Organic Textile Standard), Fair Wear Foundation, OEKO-TEX® Standard 100, FSC® Certified, and Bluesign® help verify that garments have been produced with stricter environmental and social standards.

Choosing better fabrics is one of the easiest ways to reduce your environmental footprint while supporting ethical fashion and circular fashion. These materials combine comfort, durability and lower environmental impact.

Organic cotton remains one of the most versatile and trusted sustainable fibres available. It is grown without most synthetic pesticides and fertilisers, helping to protect soil health, biodiversity and farming communities.

Compared with conventional cotton, certified organic cotton generally has a lower environmental impact and produces soft, breathable garments suitable for everyday wear.

Look for: GOTS Certified Organic Cotton.

Made from the flax plant, linen is naturally durable, breathable and biodegradable. Flax generally requires significantly less irrigation than conventional cotton and thrives with relatively few agricultural inputs.

Linen garments become softer over time, making them ideal investment pieces designed to last for years rather than seasons.

Hemp has become one of the leading fibres in sustainable fashion—and for good reason.

It grows rapidly, requires very little water compared with many conventional crops, naturally suppresses weeds, and produces exceptionally strong fibres. Hemp clothing is breathable, durable and fully biodegradable at the end of its life when untreated.

As demand for carbon-conscious clothing grows, hemp continues to be one of the most promising textile crops available.

Not every sustainable fabric comes directly from a plant. Some innovative fibres are created from responsibly sourced wood pulp using environmentally improved manufacturing processes.

TENCEL™ Lyocell is widely regarded as one of the most sustainable regenerated cellulose fibres available.

Produced using wood from responsibly managed forests, its manufacturing process recovers and reuses the majority of solvents in a closed-loop system, significantly reducing waste.

The result is an incredibly soft, breathable fabric that performs well in both casual and active clothing.

Modal offers excellent softness and moisture management while using renewable wood sources.

When produced by responsible manufacturers such as Lenzing™, it represents a far better alternative than conventional synthetic fabrics.

ECOVERO™ is an improved form of viscose made from certified renewable wood.

Compared with conventional viscose production, it generates lower emissions and uses less water, making it an increasingly popular choice among sustainable fashion brands.

SeaCell combines sustainably harvested seaweed with cellulose fibres to create breathable, lightweight fabrics.

Although still relatively niche, it demonstrates how innovation is helping move the textile industry towards more renewable resources.

Some fabrics are better than plastic synthetics but still come with important environmental considerations.

Blended fabrics often improve durability and reduce wrinkles, but they also make garments much harder to recycle because fibres cannot easily be separated.

Whenever possible, choosing garments made from a single fibre supports the principles of circular fashion by making future recycling more achievable.

Bamboo is often marketed as an environmentally friendly fabric because bamboo itself grows quickly without intensive farming.

However, most bamboo clothing is actually processed into viscose using chemical treatments. The sustainability of these fabrics depends largely on the manufacturer and whether responsible production methods are used.

Similarly, rayon, cupro and conventional viscose can vary greatly in environmental performance.

For these fabrics, certifications such as FSC® sourcing and responsible manufacturing standards become especially important.

While synthetic materials have transformed modern clothing, they also present some of fashion's biggest environmental challenges.

Polyester is the world's most commonly used textile fibre.

Although durable and inexpensive, it is produced from petroleum and sheds microplastics during washing. Even recycled polyester continues to release microfibres, meaning it should be viewed as a better option than virgin polyester—not a perfect solution.

Nylon is another fossil-fuel-based synthetic fibre valued for its strength and flexibility.

However, its production is energy intensive and contributes to ongoing plastic pollution throughout its lifespan.

Acrylic is frequently used as a substitute for natural fibres.

Unfortunately, studies have found that acrylic garments can release particularly high numbers of synthetic microfibres during washing, making them one of the least environmentally friendly textile choices.

Stretch fibres such as Lycra and elastane improve comfort and fit but are also plastic-based.

Even small percentages make garments more difficult to recycle, which is why many sustainable brands are working to minimise their use wherever practical.

Creating a healthier wardrobe isn't about achieving perfection—it's about making better choices over time.

Choosing fewer, higher-quality garments made from responsibly sourced fibres helps reduce textile waste while supporting brands that value transparency and environmental responsibility. Prioritising timeless clothing over short-lived trends also extends the life of garments and reduces overall consumption.

Whenever you're shopping, consider asking these questions:

These simple considerations help support a fashion industry that values durability over disposability and encourages a truly sustainable fashion future.

Reducing plastic-based textiles isn't just about protecting the environment—it also supports cleaner waterways, lower fossil fuel dependence and a more responsible textile industry. Every purchase sends a message about the kind of future we want to create.

The journey towards a more sustainable wardrobe starts with understanding what your clothes are made from. By choosing plant-based fibres, responsibly produced cellulose materials and certified textiles over fossil-fuel-derived synthetics, you can reduce your environmental impact while supporting a healthier fashion industry.

No wardrobe needs to change overnight. Small, intentional choices—buying less, buying better, and choosing certified materials—can collectively make a significant difference for people and the planet.

If you're looking to build a wardrobe that aligns with your values, The Carbon Closet is here to help. As a sustainable fashion platform, we connect conscious shoppers with brands that prioritise responsibly sourced materials, certified production, ethical manufacturing and lower-carbon practices. Whether you're embracing ethical fashion, circular fashion, or simply looking to reduce plastic in your wardrobe, we're here to make sustainable choices easier, more accessible and more impactful.

Shop from our website for organic cottons, Lyocell materials and hundreds more ethical alternatives and sign up to our newsletter for more information on how to build a truly sustainable wardrobe.

Enjoyed this? Here are some more articles we think you'll love:

• Why Your "Wool" Jumper May Actually Be Plastic
• 5 Eco Materials You've Never Heard Of
• Sustainable Fashion Certifications Explained Simply