Zero microplastics: why & how?

Zero microplastics: why & how?

Zero microplastics: why and how?

No elastane

Did you know that around 35% of all microplastics in our oceans comes from washing and wearing synthetic clothing

To us, sustainable denim means no harmful impacts at all. So no microplastics. Zero.

First of all, we do not use elastane (or Spandex, or Lycra) in any of our products. This is a conscious choice as other sustainable and less sustainable brands are still using elastane. Elastane is a non-biodegradable, polyurethane-based polymer with a limited lifetime. This means that it readily degrades over the lifetime of a garment, releasing microplastics during washing and wearing.

HNST Jeans release zero microplastics

One would expect that every jeans consisting of 100% cotton does not release microplastics. Unfortunately, that’s not the case. 

To explain this, we need to become a bit more technical. In order to properly weave denim fabric, yarns have to be pre-treated. Normally, this is done by using low-cost Poly Vinyl Alcohol (PVA), which is nothing less than a plastic polymer. The residues of this PVA are microplastics being released during later-stage industrial and domestic (yes at your home) washing. 

Luckily, our Italian denim mill PureDenim came up with their NaturalReco finishing solution. Instead of PVA, they use a film made of industrial vegetable waste to protect the yarn during processing and to favor its bonding. Sourced from waste, NaturalReco is a truly ecological, low-impact product optimizing the use of natural resources and avoiding plastic pollution. 

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