Why "fragrance" hides ingredients: US labelling rules

The short version

We work from documents; we have not tested any products. This page covers two sources: the FDA’s Fragrances in Cosmetics page (retrieved 2026-11-11) and the regulation text at 21 CFR 701.3 (retrieved 2026-11-14). Fragrance is not inherently harmful. The question here is narrower: what the word on a label can and cannot tell a person who reacts to fragrance. For health questions, ask a clinician.

What the rule says

The FDA page states that if a cosmetic is marketed on a retail basis to consumers, “it must have a list of ingredients. In most cases, each ingredient must be listed individually. But under U.S. regulations, fragrance and flavor ingredients can be listed simply as ‘Fragrance’ or ‘Flavor.’”

The regulation itself says the label must declare each ingredient “in descending order of predominance, except that fragrance or flavor may be listed as fragrance or flavor.” It adds a limit: “No ingredient may be designated as fragrance or flavor unless it is within the meaning of such term as commonly understood by consumers.”

Why: the trade-secret explanation

The FDA page gives its reason directly. It says the agency “requires the list of ingredients under the Fair Packaging and Labeling Act (FPLA). This law is not allowed to be used to force a company to tell ‘trade secrets.’” It continues: “Fragrance and flavor formulas are complex mixtures of many different natural and synthetic chemical ingredients, and they are the kinds of cosmetic components that are most likely to be ‘trade secrets.’”

The page also points readers to the cosmetic ingredient labelling regulation and a Federal Register notice on trade secrets and the FPLA. We did not read those, so we stop at what the FDA page itself says.

The regulation has a related provision. Where an ingredient is “accepted by the Food and Drug Administration as exempt from public disclosure,” the phrase “and other ingredients” may be used at the end of the list. We can report that the text allows this. We cannot say from these sources how often it is used.

What it means for a reader

• One word, many ingredients. Because the FDA describes fragrance formulas as mixtures of many chemicals, “Fragrance” on a US label does not tell you which ones are present. If you are trying to avoid fragrance altogether, the word itself is the signal; the individual chemicals are not listed.
• “Unscented” is not a test. The FDA page says even some products labelled “unscented” may contain fragrance ingredients, because “the manufacturer may add just enough fragrance to mask the unpleasant smell of other ingredients, without giving the product a noticeable scent.” See fragrance-free vs unscented for how we treat the two terms.
• No pre-market approval does not mean no duty. The FDA page says the law does not require FDA approval before cosmetics go on the market, but they “must be safe for consumers when they are used according to labeled directions, or as people customarily use them,” and companies have a legal responsibility for safe, properly labelled products.
• Plant-derived is not a separate category. The FDA page says there is no regulatory definition for “essential oils” and that the law treats ingredients from plants the same as those from any other source. We cover that in are essential oils fragrance-free.

How to use this when reading a label

Look for fragrance, parfum or aroma in the ingredient list rather than relying on front-of-pack wording; how to read an ingredient list walks through the terms, and what is parfum covers one of them. For the wider picture, see fragrance-free products.

A label cannot tell you which ingredient caused a reaction. If you have reactions you want to understand, a clinician or an allergy or dermatology society is the right place to ask.