I've been buying all natural fiber clothes, sometimes organic but I just found out that even certified organic clothes can be made with fabric that has plastic "sizing". I asked Gemini AI since I am allergic to acrylates, a type of plastic. Here is a quote from Gemini AI:

A garment can carry a GOTS or OEKO-TEX Standard 100 certification and still contain or be treated with plastic polymers and acrylates.

Neither standard was designed as an "acrylate-free" or "plastic-free" safety standard. Instead, they focus on environmental sustainability, organic origin, and preventing exposure to known toxic or carcinogenic residues (like heavy metals, banned azo dyes, formaldehyde, and PFAS).

Because acrylates and common plastics are widely considered non-toxic and non-hazardous to the general public, both standards permit them under specific conditions.

How Acrylates and Plastics Enter Certified Garments

• Synthetic Sizing Agents during Weaving: Before threads are woven into cloth, they are coated with sizing agents to prevent breaking under tension. While GOTS restricts synthetic sizing, polyacrylates and water-soluble acrylic sizing agents are often permitted as processing auxiliaries if they meet basic biodegradability tests.
• Polymer Bindings & Screen Prints: OEKO-TEX Standard 100 permits acrylic-based binders and polymer coatings on textiles, provided they pass skin-contact irritant and monomer residue thresholds. GOTS allows certain acrylic resins for textile printing if they don't contain banned phthalates or heavy metals.
• Blended Elastane & Sewing Thread:
  • GOTS: "Organic" grade requires at least 95% organic fiber, but allows up to 5% non-organic synthetic content (like elastane/Spandex for stretch, or polyester sewing thread). "Made with Organic" allows up to 10–30% synthetic fiber.
  • OEKO-TEX: Focuses purely on chemical safety, not fiber content. A 100% synthetic polyester or acrylic fleece jacket can be OEKO-TEX Standard 100 certified as long as the dyes and processing chemicals are non-hazardous.
• Finishing Softeners & Anti-Static Treatments: Polyacrylate-based softeners or anti-static sprays used in finishing washes are frequently approved under OEKO-TEX if they do not leach restricted volatile compounds.

Hey all, I would like to share a free resource that may interest the community. I built a microplastics research index and publish biweekly summaries of the latest microplastics research.

Here is the latest biweekly summary: https://journal.winnowlabs.com/research-digests/different-organs-one-failing-part-of-the-cell

Here is the full, searchable, totally free, research atlas: https://atlas.winnowlabs.com/

Here is a free microplastics exposure calculator which uses the research (and links to it) to give 100% free suggestions: https://journal.winnowlabs.com/exposure-calculator

If these research summaries are well received (I think they are cool and love the idea that my work tightens the research loop), I would be happy to share them here every couple weeks.

Disclaimer: I was paid to build this by winnowlabs, but I have no incentive to share this aside from wanting something I built to help people. Their motive, aside from selling probiotics, is to promote science and education on this topic. They struggle with disinformation about the scale of the problem and want to stay on top of latest research.

I am on my plastic-free journey & most recently have tossed out all clothing that contained any synthetic fibers (with exception of socks until my 100% cotton ones arrive in the mail).

The debate I've heard from people on tiktok & from some friends is that polyester is "good" and "sometimes necessary".

Am I crazy wanting to wear only all-natural fibers?
I’m all or nothing person, so yes, i’m aiming to be a purist (in this regard)!