The Ultimate 2026 Low-Tox Car Seat Buying Guide
Looking for a low-tox car seat?
Nicola Skinner ( @nourished_and_vibrant) and I have been working on this 2026 low tox car seat guide just for you!
I (Aida) posted my first blog post on car seats in 2016. Back then not a single toxic-free children’s car seat was available. In 2022, it seemed that there were more than 40 U.S. models, from 8 brands, without added flame retardants, and a fair number also without PFAS chemicals. While this was progress, there was (and is) still a lot of work to be done since the majority of car seats available on the market in the US still contained flame retardant chemicals and PFAS chemicals.
Let’s start at the beginning. What are the chemicals we want to prioritize avoiding in car seats?
PFAS
exposure is linked to thyroid cancer, increased risk of asthma, liver damage, decreased fertility and more
PFAS chemicals, which are used for stain and water repellency, migrate out of products and into dust which we then breathes in or touch and then ingest (hand to mouth). We can also be exposed to them via dermal exposure (contact to skin)
These chemicals are called forever chemicals because they do not easily break down: in fact some can stay in our body’s for upwards of 20 years!
California passed AB652 which took effect on July 1, 2023. It prohibits “ juvenile products” (including car seats) from being sold if they contain “ intentionally added PFAS”….So technically, any car seat sold in California since July 2023 should already be PFAS-free under this law. But there are four important caveats:
- Enforcement only kicks in on July 1, 2030. Until then, there is no formal enforcement mechanism — meaning brands are on their own to comply voluntarily.
- The 100 ppm threshold matters. The law doesn't require zero PFAS — it bans intentionally added PFAS and PFAS above 100 ppm. Trace amounts below that threshold are technically still permitted.
- No mandatory testing or disclosure is required yet. Brands don't have to submit lab results proving compliance — at least not until registration requirements kick in by July 1, 2029, when manufacturers must submit a statement of compliance to DTSC.
- “Intentionally added" is the key phrase. The law bans intentionally added PFAS, not trace contamination.
So practically speaking, it doesn't automatically mean every car seat on California shelves right now has been independently tested and verified as PFAS-free. Most of the brands we spoke to did not claim to be PFAS free. Brands like Nuna, Clek, and Maxi-Cosi that have proactively sought lab verification are still the gold standard
2. Flame retardants
known to disrupt the endocrine system, which regulates hormones in our body
linked to certain cancers
easily migrate out and build up in air and dust where kids breathes them in or touch them and place hands in mouth
3. Microplastics
in an effort to avoid adding flame retardant chemicals, many manufacturers have turned to polyester which is inherently flame resistant (wool is too but its much more expensive)
Polyester is a plastic and will expose your child to other chemicals and micro and nano plastics especially with use and exposure to heat inside cars.
Very few options exist that are polyester free and they are more expensive.
Is it “better” that adding PFAS? Based on current science I would say yes BUT the science on microplastics and how much of a source to microplastics car seats could be (or not) is still emerging or unknown. Ideally avoid both.
4. OTHER CHEMICALS
Other chemicals we know are given off by car seats include: phthalates (endocrine disruptions, affects fertility, affects neurological development)
What car seat should you buy?
That is a personal choice of course! Priority should be given to safety and then budget will come into play for most families. However, from a chemical exposure perspective; we would recommend prioritizing: free from intentionally added flame retardant chemicals AND free from intentionally added PFAS. Added bonus (if budget allows) for car seats offering polyester free fabric.
(Feel free to click on the links in the table above to shop!)
A few things of note for the table that are worth highlighting:
Babyark qualifies as both PFAS free and flame retardant free for all their models HOWEVER Babyark has no confirmed third-party chemical safety certifications such as OEKO-TEX, GREENGUARD Gold, or GOTS. Their fabric claims (FR-free, PFAS-free, fluorine-free) appear to be brand assertions rather than independently verified certifications.
All Clek car seats in Mammoth Ziip fabric, which is also Oeko Tex Standard 100 Certified, qualifies in both columns
UPPAbaby's Rove and Mesa Max in Greyson (Grey Melange/ Puretech) qualifies in both columns
“Flame retardant free” and “PFAS free” claims are companies stating that they do not intentionally add these chemicals to the car seats….. without independent testing it is hard to confirm if any trace levels/ contamination could be present.
WHAT’S NEW IN 2026
We can confirm 8 companies are making car seats that are free from intentionally added flame retardant chemicals and intentionally added PFAS chemicals .
Our top recommendations are the car seats that go the extra mile. They are:
are free from intentionally added flame retardant chemicals and
free from intentionally added PFAS chemicals AND
offer polyester free fabric (ie: no microplastic exposure)
These are:
Clek
UPPA Baby
Rove (convertible car seat) in Greyson (Grey Mélange) fabric
MEsa MAX in Greyson (Grey Melange)
(PureTech™ is 100% merino wool)
NUNA PIPA line:
All their Pipa car seats contain polyester in the outer shell & seat pads BUT the infant inserts for all Nuna Pipa models are either a Merino wool/ Tencell Lyocell fiber blend or GOTS certified cotton (this one sold separately)