ingredient investigation
Toxic Chemicals in Cleaning Products: What to Remove First
A clear-eyed guide to the toxic chemicals hiding in everyday cleaning products, what the science verifies, and which ones to remove first.
You don't need to fear every bottle under your sink. You need to know which three to remove first.
— Italo Campilii, co-founder, Ecolosophy
Start With the Short List, Not the Whole Cabinet
The toxic chemicals worth worrying about in cleaning products are not spread evenly across every bottle under your sink. They cluster in a short list: synthetic fragrance and the phthalate carriers behind it, VOC-heavy solvents, and the spray and aerosol formats that send all of it straight into your lungs. Remove those first and you eliminate most of your family’s daily exposure — without throwing away a cabinet full of half-used product or spending $200 in a panic.
I want to be straight with you, because this is personal for me. I spent 23 years fighting Crohn’s disease, and somewhere in the worst of it I started tracing my flare-ups to the chemistry in my own home. That experience taught me to distrust both the brands selling fear and the brands selling fake reassurance. So here is the honest version — only what the science and the regulators actually support.
The Hidden Danger Is Mostly in the Air
People assume the risk from a cleaner is what touches their skin. The bigger, better-documented risk is what they breathe.
The EPA reports that indoor concentrations of volatile organic compounds (VOCs) are routinely 2 to 5 times higher than outdoor levels, with conventional cleaning products a primary contributor. VOCs are the compounds that vaporize off a spray and hang in the air of the room where your kids play and sleep. We spend most of our lives indoors, so this is the exposure that compounds quietly over years.
It is not just irritation. A 2018 cohort study in the American Journal of Respiratory and Critical Care Medicine (Svanes et al.) followed more than 6,000 people for two decades and found that women who regularly used cleaning sprays showed accelerated lung-function decline over that period. That is a real, peer-reviewed long-term finding — not a scare headline.
This is why the format matters as much as the formula. Sprays aerosolize chemistry into your breathing zone. If you change one thing today, change your spray all-purpose cleaner.
Fragrance: The Largest Pile of Undisclosed Chemistry
If there is a single worst offender, it is the word “fragrance.”
Under current U.S. law, “fragrance” can stand in for a proprietary blend of many undisclosed compounds. Among the common ones are phthalates, used to make scent linger — and the National Institute of Environmental Health Sciences identifies phthalates as endocrine-disrupting compounds, meaning they can interfere with hormone signaling. That is the specific reason fragrance draws concern around children and pregnancy. Several individual fragrance and solvent components also appear on California’s Prop 65 list of chemicals known to cause cancer or reproductive harm.
We pulled this loophole fully apart in the fragrance loophole, and we mapped the broader hormone-active chemistry in endocrine disruptors under your sink. The short version: fragrance is the easiest high-impact thing to remove, because removing it removes a whole category of chemicals you were never allowed to see.
When Elizabeth Uria PhD formulated our base, synthetic fragrance was the first thing she cut — along with quaternary ammonium compounds and optical brighteners. Not for the smell. For what the smell was carrying.
The Real Environmental Case (and Its Honest Limits)
The environmental argument for switching gets oversold constantly, so let me give you the parts that hold up.
Biodegradability. Plant-derived surfactants that pass the OECD 301F test break down by at least 60% within 28 days, so they don’t persist in waterways or build up in aquatic life the way some conventional surfactants do. This is verifiable and meaningful.
Plastic and water. Conventional ready-to-use cleaners are roughly 90% water by volume. Every bottle you buy is mostly water wrapped in single-use plastic and trucked across the country. A concentrate skips the water and the bottle. At Ecolosophy our entire reason for existing is to keep plastic bottles out of the ocean — and a concentrate format is the most direct lever we have on that, because you reuse one bottle instead of discarding dozens. We ran the full numbers in refill vs. disposable math.
What I will not do is throw a precise “saves the planet by X%” figure at you. Those numbers vary by product and study, and inflating them is exactly the greenwashing I built this company to push back on.
What to Remove First — A Simple Order of Operations
You do not need to fear every bottle. You need a sequence:
- Spray all-purpose cleaner — highest inhalation exposure, used daily. Replace this first.
- Anything scented — sprays, “air-freshening” cleaners, scented bathroom products. This is where the undisclosed fragrance chemistry lives.
- Bathroom and disinfectant sprays — confined space, poor ventilation, high VOC accumulation.
- Everything else, as it runs out — floor cleaner, oven cleaner, specialty products. No need to waste what you already paid for.
For the full deeper inventory of what hides in mainstream “clean” products, hidden toxins in cleaning products is the reference we point people to most.
How to Verify a Replacement (Don’t Take Anyone’s Word)
Including ours. The 30-second check:
- EPA Safer Choice certification screens every intentionally added ingredient, fragrance included.
- EWG’s Guide to Healthy Cleaning — look for an A or B grade.
- Fragrance-free, not “unscented.” Unscented can mean masking chemicals were added.
- Ignore unbranded buzzwords. “Natural,” “non-toxic,” and “eco-friendly” have no legal definition for cleaning products.
The Bottom Line
A non-toxic home isn’t built by panic-buying or by trusting a green label. It’s built by removing a short, evidence-backed list of chemicals — fragrance and its phthalate carriers, harsh VOC solvents, and aerosol sprays — in order, starting with what enters your lungs first.
If you want a guide who will show you how to verify every claim for yourself, our free Ecolosophy Academy walks through label-reading, the highest-priority swaps, and how to tell real safety from marketing. Start there — and make every brand, including this one, earn your trust with evidence.
Sources cited
- EPA — Volatile Organic Compounds' Impact on Indoor Air Quality — EPA VOC indoor air quality reference
- NIEHS — Endocrine Disruptors — Phthalates and parabens identified as endocrine-disrupting compounds
- Svanes et al., 2018 — Cleaning and Lung Function Decline (Am. J. Respir. Crit. Care Med.) — 20-year cohort linking cleaning sprays to lung-function decline
- California OEHHA — Proposition 65 Chemical List — California Prop 65 list of chemicals known to cause cancer or reproductive harm
- EWG — Guide to Healthy Cleaning — EWG cleaning product safety ratings database
Frequently asked
Why is the air inside my home often more polluted than outside?
The EPA reports that indoor VOC levels are routinely 2 to 5 times higher than outdoor levels, and conventional cleaning products are a major source. Those volatile organic compounds evaporate off your sprays and surfaces and linger in the rooms where your family breathes. Since most of us spend the bulk of the day indoors, that exposure adds up.
Which toxic chemicals in cleaners are actually worth worrying about?
The short, evidence-backed list: synthetic fragrance and the phthalate carriers used to make scent last (NIEHS identifies phthalates as endocrine disruptors), VOC-heavy solvents tied to respiratory irritation (EPA), and the aerosol or spray format itself, which puts chemistry directly into your lungs. Several specific fragrance and solvent components also appear on California's Prop 65 list.
Do I have to throw out everything under my sink?
No. The smarter move is to remove the highest-exposure items first — your spray all-purpose cleaner, scented products, and bathroom sprays — and then replace the rest as they run out. That captures most of the daily exposure without wasting money or product you already paid for.
Are plant-based cleaners genuinely safer for the environment?
When they use surfactants verified to biodegrade — for example via the OECD 301F test — yes. Those break down in wastewater instead of persisting and accumulating in aquatic life. The caveat is that plant-based is a marketing term with no legal definition, so the biodegradability has to be verified, not assumed from the label.
How do I tell a genuinely safer product from a greenwashed one?
Look for EPA Safer Choice certification, which screens every intentionally added ingredient including fragrance. Cross-check on EWG's database for an A or B grade. And choose fragrance-free, not unscented. Ignore standalone words like natural, eco, and non-toxic that have no third-party review behind them.
