You are already the person who reads labels. You flip over every bottle before it goes in your cart. You know what parabens are. You've googled "sulfate-free" and "silicone-free" more than once. And still — there is a word hiding in plain sight on nearly every shampoo in the store that reveals almost nothing, and yet contains more potentially harmful chemicals than any other ingredient listed.
That word is "fragrance."
It is probably the most consequential two syllables in personal care product regulation or rather, the lack of it. And once you understand what it actually means, you will never look at a shampoo ingredient list the same way.
A Legal Loophole You're Washing Your Hair With
According to the Environmental Working Group (EWG), the word "fragrance" or "parfum" on a product label represents an undisclosed mixture of scent chemicals, some of which are linked to allergies, dermatitis, respiratory distress, and potential effects on the reproductive system. Companies are legally required to list their product's ingredients, but fragrance formulas are classified as trade secrets and are explicitly exempt from disclosure under the Federal Fair Packaging and Labeling Act of 1973. That exemption has not been meaningfully updated since.
The result: a single word on the back of your shampoo bottle can legally conceal a cocktail of 20, 50, or even 100 separate chemicals. According to EWG's Skin Deep database, almost all of the roughly 4,100 shampoos in their database contain undisclosed fragrance. By comparison, the next most common problematic ingredient shows up just a few hundred times. Fragrance isn't a footnote problem — it is the dominant problem.
What's Actually Inside "Fragrance"?
EWG's landmark investigation "Not So Sexy" found that the average fragrance product tested contained 14 secret chemicals not listed on the label. Among those hidden ingredients: diethyl phthalate — a plasticizer used to make scent last longer that has been found in 97 percent of Americans and is linked to sperm damage in human studies. Artificial musks that accumulate in human fat tissue and breast milk. And multiple chemicals that had never been assessed for safety in personal care products by any publicly accountable institution.
A 2025 review published in Frontiers in Toxicology found that phthalates and parabens both commonly hidden in fragrance formulations have been associated with hormone mimicry, interfering with endocrine function. Research has linked early-life phthalate exposure to disruptions in puberty timing, and their estrogenic effects have raised concern about elevated risk for hormone-related cancers. These are not fringe findings. This is peer-reviewed science, published in major journals, accumulating over decades.
For anyone with a sensitive scalp and especially for parents buying products used on children — this should stop you cold.
The "Clean" Label Trap
Here's where it gets more troubling. You might assume that products marketed as "clean," "natural," or "free from" are different. A 2026 peer-reviewed study published in the Journal of Exposure Science & Environmental Epidemiology analyzed 150 "clean" hair products at a Los Angeles Target and found that 90% scored above a 3 on EWG's hazard scale — refuting the idea that "clean" marketing translates to actually safer ingredients. The average EWG score across those "clean" products was 4.1.
A separate EWG report from 2025 tracking products over a decade found that while the use of some harmful ingredients like parabens has declined, the use of undisclosed fragrance has actually increased by 6.4 percentage points in the products analyzed. The industry is moving in the wrong direction on this specific issue, even as it markets itself as getting cleaner.
Why It Hits Differently for Sensitive Scalps
EWG's Skin Deep database rates "fragrance" with particular concern for its links to allergic reactions, dermatitis, and respiratory distress. For anyone dealing with an itchy, flaky, or reactive scalp — these are not abstract risks. They are the likely cause. Synthetic fragrance chemicals are among the most common triggers of contact dermatitis of the scalp, and yet most people never connect their scalp irritation to the very product they're using to "clean" it.
Dermatologists have been making this connection for years. If you have tried switching shampoos multiple times and still experience itching, redness, or flaking — the fragrance in your shampoo is one of the first things a dermatologist will ask you to eliminate.
What EWG Verified Actually Guarantees
This is exactly why the EWG Verified mark exists — and why it is the only certification in personal care that specifically addresses the fragrance loophole. To receive EWG Verified status, a product must disclose every ingredient, including all fragrance components, to EWG's scientists. There are no trade secrets. No hidden cocktails. The brand must also avoid EWG's full list of chemicals of concern, including synthetic fragrance, parabens, phthalates, formaldehyde-releasing preservatives, and sulfates.
/liv/ Nature's Unscented Shampoo Bar is EWG Verified — not because it was the easiest path, but because it was the only honest one. When founder Annie Green started the brand, it was after years of reading labels obsessively — first for herself, because of fragrance sensitivity, and then for her youngest child, who was born with a long list of allergies. EWG's Skin Deep database was already a trusted resource before /liv/ Nature existed. Pursuing verification was a natural extension of values the brand was built on.
The Simple Test
Here is the only test you need to apply to any shampoo you consider: Can you read every ingredient and know what it is? If the word "fragrance" or "parfum" appears, the answer is no — regardless of what the front of the bottle says.
Fragrance-free is not a preference. It is not a niche. For anyone with a sensitive scalp, for any parent buying products for a family, for anyone who believes they have the right to know what they are putting on their body every day -fragrance-free is the baseline. It is the minimum acceptable standard of transparency.
And once you understand the loophole, you understand exactly why two small words on a label - fragrance-free are the most important ones on the label.
