Cornerstone Research

News & Research: What the Latest Microplastic Studies Actually Say

The science of microplastics and hormone disruptors moves fast, and the wellness industry moves faster. Here is what the peer reviewed research, regulatory filings, and class action lawsuits actually show. Cornerstone explainers, year in review roundups, myth busting, and the brands quietly walking back their plastic free claims.

Updated May 25, 2026 by the Plastic Detox Editorial Team

8in-depth articles
~155 mintotal read time
2026latest research
100%peer reviewed sources

The research, in order

Start with the year in review for the broad picture. Each piece below stands alone if you want to jump in by topic.

1
Annual Roundup

2026 Low Tox Year in Review: What Actually Changed

Federal rollbacks, state laws filling the gap, the February glyphosate executive order, the brain microplastic studies, and the class action wave against clean brands. What changed in 2026, what did not, and what to do about it.

32 min read Latest
2
Cornerstone Explainer

Not All Plastic Is the Same: A Calibrated Guide to What's Actually Worth Worrying About

The seven resin codes, the BPA free trap, the phthalate problem, and which specific plastics deserve your attention. Where the evidence is strongest, where marketing claims fall apart, and what to swap first.

25 min read Cornerstone
3
Research Finding

BPA Free Is Not Safe: What BPS, BPF, and BPB Actually Do

Manufacturers swapped BPA for BPS, BPF, and BPB. Peer reviewed studies show the substitutes cause the same hormone disruption, sometimes worse. What the BPA free label actually tells you, and what to look for instead.

12 min read Cornerstone
4
Myth Busting

Low Tox Myths, Debunked: What Is Actually Worth Worrying About

A science backed walkthrough of the loudest low tox claims. Which kitchen, food, personal care, and baby concerns are real, which are exaggerated, and where to focus your effort for the biggest health impact.

22 min read Cornerstone
5
Research Guide

Low Tox Mistakes That Hurt You More Than They Help

Eleven research backed low tox mistakes. DIY detergent, charcoal toothpaste, fluoride free kids toothpaste, essential oils around babies, and more wellness trends that sound clean but cost you health, money, or both.

22 min read Cornerstone
6
Investigation

Clean Products That Aren't: 10 Brands Tested and Sued

The class action wave against Honest Company, Burt's Bees, Mrs Meyer's, and others. What the lawsuits revealed about natural and plant based labels, and how to read an ingredient list when the front of the bottle lies.

18 min read Investigation
7
Investigation

Sustainable Fabrics That Aren't

Modal, viscose, bamboo rayon, and recycled polyester are marketed as eco friendly. What the supply chain actually looks like, the chemicals used in processing, and the natural fibers worth seeking out.

14 min read Investigation
8
Investigation

Bamboo Toothbrushes Still Have Plastic Bristles

Most bamboo toothbrushes still ship with nylon bristles, plastic bound handles, and end up in landfill. The brands that actually deliver on the marketing, plus the dental science behind what matters for your enamel.

10 min read Investigation

One research backed swap, every week.

The Plastic Detox Weekly distills the latest peer reviewed studies and regulatory updates into one swap worth making this week. No fluff, no sponsored placements, no fear mongering.

Subscribe Free Take the whole home quiz →

Quick answers

The questions readers ask most often, with deep dive links into the relevant article.

Is BPA free plastic actually safe?
No. Manufacturers replaced BPA with BPS, BPF, and BPB. These substitutes cause the same hormone disruption per multiple peer reviewed studies. BPA free is a marketing claim about what is missing, not a guarantee about what is safe.
Read the full guide →
Which plastics should I actually worry about?
Polycarbonate (resin code 7), PVC (3), and polystyrene (6) leach the most under normal use. PET (1) is mostly fine cold but sheds particles when heated or reused. PP (5) and HDPE (2) are the safest of the everyday plastics. The full risk tier guide breaks it down.
Read the full guide →
Are clean beauty labels meaningful?
Often not. The class action lawsuits against Honest Company, Burt's Bees, Mrs Meyer's, and others uncovered fragrance phthalates, synthetic surfactants, and 1,4 dioxane contamination in products marketed as plant based or natural. The label is unregulated.
Read the full guide →
Is DIY toothpaste safer than store bought?
No. Most DIY toothpaste recipes are abrasive enough to erode enamel, and going fluoride free significantly raises cavity risk in kids. Charcoal toothpaste is linked to gum recession. The research on which wellness trends backfire is in the full guide.
Read the full guide →
Are bamboo toothbrushes really plastic free?
Rarely. Almost every bamboo toothbrush on the market uses nylon bristles, often glued into the bamboo with synthetic resin. A handful of brands use boar bristle or biodegradable alternatives. The full guide names them.
Read the full guide →
Is recycled polyester actually better?
Slightly, but it still sheds the same microfibers as virgin polyester when washed. Modal, viscose, and bamboo rayon are processed with carbon disulfide and sodium hydroxide. The natural fiber tier list is in the full investigation.
Read the full guide →

Continue your detox

Other guides and topics to tackle next.