For years, recycled polyester seemed like the better option. It’s made from old plastic bottles & fabric scraps, so it sounded like a way to cut down on waste and use up fewer resources. For a while, I was totally on board.
But what’s considered sustainable keeps changing. New research comes out all the time, so my own view has changed too.
These days, I don’t see recycled polyester as a truly sustainable alternative to regular polyester. It’s not that it’s bad in every way; it just doesn’t fix the biggest problem with synthetic fabrics: microplastic pollution. New research even says it sheds more of those tiny plastic fibers than virgin polyester does.
What Is Recycled Polyester?
Recycled polyester (often called rPET) usually comes from old plastic bottles. They break the bottles down, melt them, and turn them into new fibers. It sounds great; less new plastic, less trash, and it uses less energy than making brand new polyester from scratch.
And to be fair… it really does cut down on the use of new oil. That’s important.
But at the end of the day, recycled polyester is still plastic. And plastic acts like plastic, no matter where it started.
The Microplastics Problem We Can’t Ignore
When we wear & wash synthetic fabrics, they release tiny plastic fibers called microplastics. Most wastewater treatment systems can’t capture these small fibers, so they end up in rivers, oceans, soil, & even our food and water (I’m sure you’ve heard of us possibly ingesting a credit card’s worth of microplastics per week).
What’s changed my perspective is new research saying recycled polyester may release microplastics at higher rates than virgin polyester. Because recycled fibers are often shorter & weaker due to mechanical recycling, they can break off more easily during washing & wear.
So, while recycled polyester helps reuse plastic that is already being discarded, it might actually make fashion’s microplastic pollution problem worse. And not to mention all the resources and chemicals used to recycle that plastic into new fabric. There’s a lot to think about here.
Why This Changed My View
Recycled polyester was supposed to be a quick fix, not a long-term answer. But these days, the fashion industry calls it ‘sustainable’ without talking about the real issues:
- It still sheds microplastics
- It still doesn’t biodegrade
- It still requires energy-intensive processing
- It still keeps us dependent on plastic-based textiles
At some point, being ‘better than before’ just isn’t enough. It feels a lot like greenwashing.
To me, real sustainability in fashion means moving away from plastic fibers, not just finding new ways to use them. I feel as if we need to invest more time in plant-based synthetics that can biodegrade but still perform the same. After all, synthetics do have their place, and the fibers do have some great qualities.
Is Recycled Polyester Safe?
This is where things get a bit tricky, and there isn’t a definitive answer I can give.
For your health, recycled polyester can be safer than regular synthetic fabrics, especially if it’s certified by something like OEKO-TEX®. That certification means the fabric is tested for things like heavy metals, formaldehyde, and certain toxic dyes. It’s helpful for clothes you wear every day or that touch your skin.
But chemical safety is just one piece of the puzzle.
Even if recycled polyester is OEKO-TEX® certified, it still sheds microplastics.
So while OEKO-TEX® certification can lower your risk from harmful chemicals, it doesn’t fix issues like:
- Microplastic shedding during washing
- Environmental accumulation of plastic fibers
- Long-term ecological & food-chain impacts
Basically, recycled polyester might be less toxic at times, but it’s still plastic, and plastic pollution is still the big problem.
That’s why I don’t see recycled polyester as a truly sustainable fix, even with certifications. Certifications can help, but they don’t solve the biggest problem: we’re still relying on synthetic fibers that don’t break down naturally.
OEKO-TEX® can help you make better choices with the synthetic clothes already available (especially secondhand ones), but it’s not a total environmental solution.
When Recycled Polyester Becomes Greenwashing
I’ve become more skeptical about recycled polyester because it’s often used for greenwashing instead of real progress.
A lot of brands brag about using recycled polyester (like saying their clothes are ‘made from recycled bottles’), but they still mostly use synthetic fabrics and pump out new styles all the time. They use recycled polyester to sell their products, but the clothes are still part of fast fashion.
Recycled polyester can make something sound eco-friendly, but it doesn’t fix bigger problems, like microplastics, clothes that don’t break down, or styles made to be worn just a few times.
When brands use recycled polyester as an excuse to keep making more clothes, they distract from what really matters in the fashion industry: making fewer, higher-quality pieces from better materials.
What worries me is when recycled polyester is treated as the perfect solution rather than just a short-term fix. Yes – It keeps plastic in use, but it also keeps us hooked on clothes made from plastic, and puts off the switch to natural fibers. I wish we would spend more time figuring out a true solution to non-biodegradable synethic fibers.
For me, real sustainability isn’t about finding new ways to sell plastic. It’s about asking why we use so much plastic in our clothes in the first place. If brands use recycled polyester to dodge that question, it’s not progress…. It’s just more greenwashing.
What I’m Prioritizing Instead
This isn’t about being perfect. It’s just about small changes.
I now focus on:
- Picking natural fibers like wool, organic cotton, linen, & hemp
- Buying fewer clothes and wearing what I have more often
- Choosing secondhand clothes when the synthetic ones already exist
- Washing my clothes less often & using guppy bags
I’ve reached a point where I no longer seek out recycled polyester as a sustainable material. In 2026, it’s not something I would highlight as a meaningful sustainability attribute for a brand. That perspective may evolve as research and innovation advance, but with what we currently know about microplastic pollution, it’s a pass for me… for now.
