What the Federal Hazardous Substances Act Puts on a Label (and What It Leaves Out)

Short answer: US federal law requires hazard warnings on cleaning products, not ingredient lists. The Federal Hazardous Substances Act, the 1960 law CPSC administers, requires a signal word, a statement of the principal hazards, precautionary measures, and the name of "the hazardous substance or of each component which contributes substantially to its hazard." Nothing in it compels a full ingredient list, which is why a conventional jug can name almost nothing. EPA steps in only when a product claims to sanitize or disinfect, which makes it a pesticide under FIFRA.

One state changed the picture. California's Cleaning Product Right to Know Act of 2017, Senate Bill 258, added Section 108950 to the Health and Safety Code and reaches laundry detergent by name. Manufacturers selling in California must post ingredient information online for products sold since January 1, 2020, and put disclosures on the label itself for products sold since January 1, 2021. Brands seldom print separate labels for one state, so Sacramento's rule reaches Green Llama readers almost everywhere. The law also has teeth on fragrance:

Europe went further, and the contrast explains why a US label can feel so sparse. Under the EU Detergents Regulation (EC) No 648/2004, detergent packaging must show key ingredient classes, such as surfactants, phosphates and bleaches, in weight bands when they exceed 0.2 percent. It must also name preservatives, enzymes, optical brighteners and perfumes “irrespective of their concentration,” and name listed allergenic fragrances above 0.01 percent by weight. Manufacturers must also post a full ingredient list on a public website, and give a detailed ingredient datasheet to medical personnel on request. A replacement law, Regulation (EU) 2026/405, entered into force in March 2026 and takes over from the 2004 rules in September 2029. Our primer on what “non-toxic” means on a cleaning label covers the marketing side of the same gap. This page sticks to what the law says.

Two Real Ingredient Lists, Decoded: Green Llama's Powders

Short answer: the fastest way to learn label-reading is to run the matrix on a real label. Green Llama's Max Strength Fragrance-Free Laundry Powder names eleven ingredients on its page, checked live on August 16, 2026. Grouped by job, the whole label sorts into three buckets:

Run the caution list against it: no isothiazolinones, no formaldehyde releasers, no optical brighteners, no "fragrance" line, nothing ethoxylated. The standard Powerful Fragrance Free Laundry Detergent is even shorter: four ingredients built on saponified coconut oil, which is soap in the original sense. 

Now hold a conventional jug to the same light. A typical liquid names a surfactant or two, then "fragrance," then a preservative from the isothiazolinone family. None of that breaks any US law, which is the point of the statute section above. The label is not lying to you; it is telling you less than Green Llama thinks a label should.

The Green Llama Standard (and Its Limits)

Green Llama's lane here is disclosure: every ingredient named on every product page, in formats that skip the highest-caution rows of the matrix. No liquids means no preservative burden. Fragrance-free means no undisclosed blend. Powder chemistry built on SCIL-listed minerals, two non-ethoxylated surfactants, enzymes, and oxygen bleach. If a name on our label puzzles you, the matrix above decodes it, and the six-check routine above is the same standard we ask readers to hold us to.